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~.. JfaCIOr -""J~I. .' TM-1056 (Mar-T3) Specilicat;on~ and Specia; Tools 30-1

Group 30SPECIFICATIONS

AND SPECIAL TOOLS

Intake SystemAirClean.r

SPECIFICATIONS

....Diesel- Air intake vacuum at 2200 engine rpm with clean filter elements:

Specillcaaion

With air stack 7 In. waterWithout air stack 6 in. water

Maximum permitted reading 25 In. waterRestriction required to activate Indicator lamp 24-26 in. water

Gasoline - Air intake vacuum at 2200 engine rpm (full load) with clean filter elements:With air stack 6 in. waterWithout air stack 4 in. water

Maximum permitted reading at full load ~. . . . . .. . . .. . .. . . . . . . . . . . .. . . . . .25 in. waterRestriction required to activate indicator lamp 24-26 in. water

Diesel Fuel SystemFuel Pump

118. 8peclflcation

Normal operating pressure at idle speed 3- Vz to 4- Yz psi

Fuel Injection Pump

Timing to engine TOCFast idle speed 2380-2420 rpmSlow idle speed 780-820 rpmAutomatic speed advance

Advance at 1300 engine rpm'uU Lo." No Lo.d

5.... ........Advance at 1700 engine rpm 58Advance at 2100 engine rpm 6.Total advance movement 68 6.

Injection pump-to-cylinder block mounting stud nuts torque .. . . . . .. .. .. . ... 20 ft-IbsTiminggear-to-hubcap screwstorque . . . . .. 35ft-IbsInjection nozzle hold-down cap screws torque 20 ft-Ibs

Injectionnozzleinletconnectorto~.. . .~~ .e.;...)rn;f'.~;f~'p' 35 ft-IbsFiring .order for teunt!,tl0 rotat1ng engine 15362lftrtn~ order for £18ek~ise rotating engine 14263:Gasonne Fuel System Ifr... - ':,,-Fuel Pump ~/~t: ~ I ra-

... lpeclfiC8tionNormaloperatingpressureat Idlespeed. . . . . . . . . 3-VJto 4.VJps

litho in-U.s.A.

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Tractor - 4230TM-1056 (Aug-72J

--------

Basic EngineCooling SysteM ~

GENERAL INFORMA TIOH

The cooling system consists of a conventionaltype radiator, water pump, two thermostats, andwater manifold.

On gasoline engines, output from the pump flowsInto the cylinder head, then coolant divides withpart going through the block and part through thehead between the valves. After cooling the headand the block the coolant flows through the ther-mostats into the radiator.

During warm-up periods. the thermostat remainsclosed. Coolant is then directed through the bypasssystem and recirculated in the head and block forfaster and more uniform warm-up. When the en-gine reaches normal operating temperature, thethermostats open and water circulates throughthe radiator.

On diesel engines, the pump draws coolant fromthe bottom of the radiator and discharges it intothe main coolant gallery on the left-hand side ofthe engine. Coolant from the gallery circulatesthrough the block to cool block and cylinder liners,then flows into the cylinder head. From the cylin-der head, the coolant passes into the water mani-fold and thermostat housing.

If the thermostats are closed (as during warm-upperiods) coolant is directed back to the pump to berecirculated. This provides a faster and more uni-form warm-up.

If the thermostats are open (engine at normaloperating temperature) coolant flows back throughthe thermostats to the top of the radiator.

The diesel engine 011cooler, located In the maincoolant gallery, receives Its cooling capacitiesfrom the coolant flow around It.

DIAGNOSING MALFUNCTIONSEngineOnrh....

Defective head gasketIncorrect timingLow oil levelLow coolant levelDirty radiator or grille screenLoose fan beltFaulty thermostats

Utfio In U.S.A.

Group ~COOLING SV~TE

Faulty radiator pressure capFaulty water pumpCorroded coolant passagesImproper operation

LowCoolant Leve.Improper maintenanceImproper operationDamaged radiatorWater pump seal leakageLeakageFaulty radiator cap

RADIATOR AND FAN

Visuallycheck the radiator for leaks or da

If no leaks can be seen but leaking persismove radiator from the tractor and perforfollowing test:

1. Install radiator cap, plug the overflowturthe outlet pipe.

2. Attach an air hose to the inlet cannee

3. Apply 10 psi compressed air , su~in tank of water. Check for air bubL atand radiator core.

NOTE:Repairsshouldnot be attemptedby an experiencedradiator repairman.

Check radiator cap for defects. Capmaintain 6.25 to 7.50 psi pressure.

Check fan pulley for wear or damage.as necessary.

Belt should deflect 1.00 Inch at 25 Ibs.

WATER PUMPR.moval

Disconnect electrical wiring and rertemator.

Remoye fan and pulley from water pl

Drain cooling system and remove inlet cpipes from the water pump. Remoyewa'

Tractor - 4230

-rU-1056 (Aug-72)

- - - - -- - - -

Basic Engiflfft 20Cooling System 30-1

GENERAL INFORMATION

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The cooling system consists of a conventionaltype radiator, water pump, two thermostats, andwater manifold.

On gasoline engines, output from the pump flowsinto the cylinder head, then coolant divides withpart going through the block and part through thehead between the valves. After cooling the headand the block the coolant flows through the ther-mostats into the radiator.

During warm-up periods, the thermostat remainsclosed. Coolant is then directed through the bypasssystem and recirculated in the head and block forfaster and more uniform warm-up. When the en-gine reaches normal operating temperature, thethermostats open and water circulates throughthe radiator.

On diesel engines, the pump draws coolant fromthe bottom of the radiator and discharges it intothe main coolant gallery on the left-hand side ofthe engine. Coolant frf:\m the gallery circulatesthrough the block to ce..: block and cylinder liners,then flows into the cyr~der head. From the cylin-der head, the coolant passes into the water mani-fold and thermostat hOdsing.

If the thermostats are closed (as during warm-upperiods) coolant is directed back to the pump to berecirculated. This provides a faster and more uni-form warm-up.

If the thermostats are open (engine at normaloperating temperature) coolant flows back throughthe thermostats to the top of the radiator.

The diesel engine oil cooler, located in the maincoolant gallery, receives its cooling capacitiesfrom the coolant flow around it.

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DIAGNOSING MALFUNCTIONS

Engine OverheatsDefective head gasketIncorrect timingLow oil levelLow coolant levelDirty radiator or grille screenLoose fan beltFaulty thermostats

Litho in U.S.A.- - --

Group 30COOLING SYSTEM

Faulty radiator pressure capFaulty water pumpCorroded coolant passagesImproper operation

LowCoolant LevelImproper maintenanceImproper operationDamaged radiatorWater pump seal leakageLeakageFaulty radiator cap

RADIATOR AND FAN

Visuallycheck the radiator for leaks cr damage.

If no leaks can be seen but leaking parsists, re-move radiator from the tractor and perform thefollowing test:

1. Install radiator cap, plug the overflowtube and.the outlet pipe.

2. Attach an air hose to the inlet connection.

3. Apply 10 psi compressed air and submergein tank of water. Check for air bubbles at seamsand radiator core.

NOTE: Repairs should not be attempted exceptby an experienced radiator repairman.

Check radiator c'ap for defects. Cap shouldmaintain 6.25 to 7.50 psi. pressure.

Check fan pulley for wear or damage. Replaceas necessary.

Belt should deflect 1.00 inch at 25 Ibs. pull.

WATER PUMPRemoval

,Disconnect electrical wiring and remove al-ternator.

Remove fan and pulley frc',n water pump hub.

Drain cooling system and remove inlet and outletpipes from the water pump. Remove water pump.

2030-2

Basic EngineCooling System

Disassembly

Fig. 1-Removing Hub

Use a puller and press to remove fan hub (Fig.1). .

Remove bearing, seal, and impeller from pumphousing.

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... ~ :: :-..

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~~~2~1-.

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Fig. 2-Pressing Bearing, Seal and ImpellerIrom Pump Housing-Gasoline

On gasoline engine water pumps use JD-243driver (Fig. 2); on diesel engine water pumps useJD-262 driver to press the bearing, seal, and im-peller out of the pump housing.

Lit:70 in II C' 1\

/Tractor -1!230

TM-10S6 (Aug-72)

Press the bearing from the impeller.

Inspection and Repair

Inspect pump parts for wear or damage. Replaceas necessary.

Pump leakage can be caused by one or moreof the following conditions:

1. Cracked housing.

2. Scratched, damaged, or worn seal.

3. Damaged impeller bore. Check bore and bear-ing shaft for wear or damage. A new impeller 1.0.is 0.6242 to 0.6252 inch. The new shaft 0.0. is0.6262 to 0.6267 inch.

4. Cracked, loose, or damaged ceramic insert..

5. Loose or defective rubber .cup. .

6. Failed bearing. '.

leakage at the drain hole in the pump housingusually indicates a leaking seal. Replace seal,rubber cup, and ceramic insert as necessary.

Assembly

Cover bearing with a light coat of clean SAE10W engine oil and press into housing. Outerbearing race should be flush with housing edge. .

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Fig. 3-1nstalling Bearing-Diesel

. .Tractor - 4230TM-1056 (Aug-72)

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Fig. 5-lnstal/ing Impeller-Diesel

With pump resting on fan hub, press impellerinto place. Be sure impeller is started straight.Press impeller until there is 0.015 to 0.035 inchclearance between machined surfa&e of the hous-ing and impeller (Fig. 5).

Support bearing shaft and press fan hub onshaft to 1/4 inch above end of shaft.

NOTE: Do not press hub flush with the end ofthe shaft.

.....

Litho in U.S.A.

Basic EngineCooling System

2030-3

Installation

Install fan and cover on pump. Tighten capscrews to 35 ft-Ibs torque. Install pump on engine.

Install fan and pipes on water pump.

Install alternator.

Fill radiator with clean soft water and JohnDeere Summer Eng;ne Coolant Conditioner orantifreeze solution.

WATER MANI'FOLD ANDTHERMOSTATS

Remove and inspect for cracks or damage. Re-place or repair as necessary.

Visually inspect thermostats for defer;ts. Testfor operating temperature range of 180. to 200<'F.

Install manifold and thermostats using newgaskets.

Fig. 6-Vlater Manilold and Thermostats-Gasoline

Tractor - 4230TM-1056 (Mar-73)

Basic Engin9 20Specifications and Special Tools 40-1

Group 40SPECIFICATIONS AND SPECIAL TOOLS

SPECIFICATIONS

Item Measurement SpecificationWear

Tolerance

Cylinder Head, Valves, and CamshaftValves

Intake Clearance . . . . . . . . . . . . . .0.018 in.-diesel0.015in.-gasoline

Exhaust Clearance 0.028in.-diesel0.028in.-gasoline

Valve lift at specified clearance .. . . . . . . . . . . . . . . . . . . . . . .. .0.4500in.Valvesprings .Free length .2.1200 in.

Compressed (valve closed) 1.8100 in. at 54 to 62 Ibs.Compressed (valve open) .1.3600 in. at 133 to 1531bs.

Valve stem .0.0. 0.3715 to 0.3725 in.Valve face........ ............ .Angle 44.5Valve face

Intake. . '. . . . . . . . . . . . . . . . . . . . .0.0. . . . . . . . . . . . . . . . . . . . 1.6830 to 1.6930 in.-gasoline1.8970 to 1.9070 in.-diesel

Exhaust .0.0. .1.4950 to 1.5050 in.-gasoline1.7100 to 1.7120'in.-diesel

Valveguides. . . . . . . . . . . . . . . . . . .1.0. .0.3745to 0.3755in.Valvestemtoguide. . . . . . . . . . . . .Clearance ; 0.0020to 0.0040 in. 0.0060 in. .

Valve seat Width 0.0830to 0.0930 in.Valve seat Concentricity 0.0020 in.-run-out .Camshaft . . . . . . . . . . . . . . . . . . . . . .End play . . . . . . . . . . . . . . . .0.0025to 0.0085in. 0.0150in.Camshaft bushing journals .0.0. .2.3745 to 2.3755 in.Camshaft bushing .1.0. 2.3775 to 2.3795 in.Journalto bushing... . . . . . . . . . . .Clearance 0.0020to 0.0050in. 0.0060in.Camshaft thrust plate .Thickness .0.1870 to 0.1890 in. .0.1820 in.Cylinder head-to-block Torque .125 to 135 ft-Ibs (110 to 120ft-Ibs - initial)Rocker arm shaft clamps-to-head..Torque 50 to 60 ft-Ibs

'Camshaft thrust plate-ta-block ... Torque 20 ft-lbsCamshaft gear-to-camshaft Torque 85 ft-IbsIntake manifold to head Torque : 35 ft-IbsInjection pump gear to

injection pump Torque 35 ft-IbsInjection pump to block Torque 20 ft-lbs

Cylinder Block, Liners, Pistons, and RodsCylinder liner above block Height 0.0010to 0.0040 in.Pistonring... . . . .. . .. . . . .. .Sideclearance .0.0040 to 0.0055 in.-

second ring-Q.0100 in.0.0025 to 0.0040 in.-oil ring .. . 0.0100 in.

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Litho in U.S.A.

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20 Basic Engine40-2 Specifications and Special Tools

Tractor - 4230TM-1056 (Mar-73)

Measurement SpecllicalionWear

Toleranc:e

ylinder Block, Liners, Pistons, and Rods--(Continued)

Piston pin .O.D. .1.2497 to 1.2500 in.-gasoline. . .1.2492 in.1.4997 to 1.5003 in.-diesel .1.4992 in.

Piston pin bore in piston... .I.D. .1.2503 to 1.2509 in.-gasoline.. .1.2519 in.1.5003 to 1.5009 in.-diesel .1.5019 in.

Piston pin bushing bore .I.D. .1.2510 to 1.2520 in.1.5010 to 1.5020 in.

Piston pins .Oversize available .0.0030 to 0.0050 in.Piston

Top of skirt. . . . . ... . .. . . . . .. .O.D. .4.2395 to 4.2405 in.-gasoline4.2404 to 4.2414 in.-diesel4.2409 to 4.2416in.-diesel"low"*4.2416 to 4.2423in.-diesel "high"*

Bottom of skirt... . . . . .. . . . . ..O.D. .4.2455to4.2465in.-gasoline4.2455 to 4.2465in.-disel4.2459 to 4.2466 in.-diesel"low"*4.2466 to 4.2473 in.-diesel "high"*

Cylinder liner .I.D. .4.2493 to 4.2507in.-gasoline and diesel4.2493 to 4.2500in.-diesel"low"*4.2500 to 4.2507 in.-diesel"high"*

Cylinder liner Maximum wear or taper 0.0020 in.Pistonto liner. . . . . . . . . . . . . . . . . .Clearance 0.0088to0.0112in.-gasoline-top

0.0028 to 0.0052 in.-gasoline-bottom0.0079 to 0.0130 in-diesel-top0.0028 to 0.0053 in-diesel-bottom0.0077 to 0.0091in.-diesel*-top0.0027 to 0.0041 in.-diesel *-bottom

Connecting rod bearings .I.D. (assembled) 3.0010 to 3.0030 in.-gasoline3.0015 to 3.0025 in.-diesel

Crankshaft connecting rod journalsO.D. 2.9985 to 2.9995 in.-gasoline2.9982 to 2.9992 in.-diesel

Bearing to journal ... . .Clearance .0.0015 to 0.0045 in. .0.0065 in.Connecting rod bearing inserts .. Undersize available .0.002, 0.010, 0.020, and 0.030 in.Connecting rod caps-to-rod Torque .90 to 100 ft-Ibs-gasoline* later model 100 to 110ft-Ibs-diesel .

Crankshaft, Main Bearings, and FlywheelCrankshaft End play .0.0025 to 0.0085 in. .0.0150 in.Clutch shaft pilot bushing adapter I.D. ~.. . . . . . ... .1.0025 to 1.0055 in.Clutch shaft at bushing O.D. 0.9995 to 1.0005 in.Bushing in adapter Depth 0.0200 to 0.0400 in. below adapter faceMain bearing journal O.D. .3.3715to 3.3725in.Main bearings .I.D. (assembled) .3.3742to 3.3762in.Bearing to journal. . . . . .. . .Clearance .0.0017 to 0.0047 in. . . . . . . . .0.0077 in.Main bearing inserts .Undersize available .0.002,0.010,0.020, and 0.030 in.Crankshaft rear oil seal to housing .0.0060 in.-run-outMain bearing caps-to-block Torque 150 ft-Ibs")1'O>~rcrankshaft oil seal housing-

)-block TorqueFlywheel-ta-crankshaft TorqueDamper-to-crankshaft Torque

. . . . . . . . . . . . . . . . .20 ft-Ibs

. . . . . . . . . . . . . . . . .85 ft-Ibs

. . . . . . . . . . . . . . . . .150 ft-Ibs

Utho ;'1" C,'1\ - -- -

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Tractor - 4230T1.1-1056 (Mar-73)

Basic Engine 20Specifications and Special Tools 40-3

~.. Item Measurement Spec:1l1eaUonWear

Tol.rane.

Lubrication SystemEngine Oil pressureOil pressure regulating

valve spring Compressed

..25 to 40 psi --Gasol ine @1900rpm40 to 55 psi--Diesel @1900 rpm

. . . .. . . . . .. .0.72in.at 6.75to 8.24Ibs.-gasoline1.71in. at 30 to 33 Ibs.-diesel

Oil filter relief valve spring .Compressed .1.19-in.at 18 to 20 Ibs-gasoline2.38in. at 18 to 22Ibs.-diesel

Oil cooler relief valve spring Compressed 1.00in. at 3.7 to 4 Ibs.-gasoline1.38 in. at 18 to 22 Ibs.-diesel (inner)0.75 in. at 27 to 33lbs.--diesel (outer)

Gear bore in pump housing. . . . . .Depth .1.5100 to 1.5140in.-gasoline1.7530 to 1.7570 in.-diesel

I.D. .2.2720 to 2.2740 in.-gasoline3.3840 to 3.3860 in'-diesel

Driven and Idler gears O.D. 2.2680 to 2.2700 in.-gasoline3.3801 to 3.3811 in.-diesel

Thickness .1.5000 to 1.5070 in.-gasoline1.7500 to 1.7520 in.-diesel

Idler shaft. .......... ... . .... ..O.D. .0.6284to 0.6290 in.Driven shaft O.D. 0.6235 to 0.6245 in.Idler gear .I.D. .. ~.. ... .. .. .0.6330to 0.6340in.Driven gear .1.0. 0.6220to 0.6230in.Oilpan-V2 in.cap screws . . . . . . .Torque 85ft-Ibs

-3fa in. cap screws. ......Torque 35 ft-Ibs

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Cooling SystemRadiator Test pressure 10 psiRadiator Cap Test pressure 6.25 to 7.50 psiFan belt Deflection 1.00 in. at 25 Ibs.Water pump impeller ....... .. ...I.D. 0.6242to0.6252in.

Installed 0.0150 to 0.0350 in. from housingThermostats .Range 180 to 200°FWater pump cover-to-pump .Torque .35 ft-Ibs .

Fan-to-water pump hub ..........Torque 35 ft-Ibs

Gasoline Engine GovernorG.overnorarm shaft O.D. 0.4990to 0.5000 in.Governorarm shaft

needle bearings .I.D. .0.5000 to 0.5005 in.Governor drive shaft at bushing. .O.D. .0.7495 to 0.7505 in.Governor drive shaft bushing .I.D. .0.7520to 0.7540 in.Thrust bearing .I.D. 0.4500 to 0.4530 in.Weightcarrier. . . . . . . . . . . . . . . . . .1.0. 0.4965to0.4985in.Drive shaft at thrust bearing O.D. 0.4360 to 0.4380 in.Drive shaft at weight carrier. ... .O.D. .0.4990 to 0.5010 in.Speed control arm shaft O.D. 0.4340 to 0.4380 in.Speed control arm hushing. . . .. .I.D. .0.4380 to 0.4420 in.Governor drive shaft. . . . . . . . . . . .End play. . . . . . . . . . . . . . . .0.0060 to 0.0120 in.

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Litho in U.S.A.- -

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20 Basic Engine40-4 Specifications and Special Tools

Tractor- 4230TM-1056 (Mar-73)

=-"gine Break-In Instructions. "he following break-in procedure can be used for dynamometer or field break-in. Whenever possible,

break engine in on a dynamometer to insure a controlled break-in procedure.Remarks

Checkoil pressure,coolanttemperatureand leakage

Field or dyno

Field only

NOTE: Fill engine crankcase with Torq-Gard 10W-20 oil to proper level lor use during break-in pro-cedure.

.After this run, retighten cylinder head bolts by first loosening bolt and then tightening to 125 to 135ft-Ibs torque. Check and reset valve clearance. "

u Avoid c"Jer-loads,excessive idling, and no-load operations during break-in period. After break-in, drain~rankcase oil and remove filter. Install new filter and fill crankcase with oil of proper viscosity and

~rvice classifications.

SPECIAL TOOLSNo.

1002 ..JDE-4129S.JDE-S.

Name

Knurling ToolPullerValve Seat Insert Driver

JDE-5S. Valve Seat Insert Driver

JDE-67. Valve Seat Insert Driver

JDE-S1.ND425u.JDE-6JDE-52.GBD-4Y2·JDE-4*JDE-5.10-S.JDE-47.AR54749uU,JOE-57.-,)-B·

Engine Rotation ToolMagnetic HOlding ToolBushing Replacement SetRing Groove Wear GaugeCylinder BrushDriverDriverBrushRing ExpanderLubricating SoapRing CompressorEngine Stand"Blind-Hole" Puller SetDriverDriverDriverBushing Driver Set

JDH-7*JDE-2A.JDE-3*27797.

Use

Knurl valve guidesRemove cylinder head valve seat insertsInstall gasoline cylinder head exhaust valve seat

insertsInstall diesel cylinder head exhaust valve seat

inserts (if applicable)Install diesel cylinder head intake valve seat inserts

(if applicable)Adjust valvesHold cam followersReplace camshaft bushingsCheck diesel piston top ring grooveDeglaze cylinder tinersReplace gasoline piston pin bushingsReplace diesel piston pin bushingsClean cylinder liner boresInstall piston ringsLubricate cylinder liner pac kings and O-ringsInstall pistonsHold engine for repairRemove clutch pilot shaft bushing adapterInstall crankshaft gearInstall rear crankshaft oil seal and wear sleeveInstall front crankshaft wear sleeveInstall front crankshaft oil seal

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Time Load Engine Spead

10 Minutes No Load 800 RPM

10 Minutes No Load 1500 RPM

25 Minutes Y2Load 1500 RPM

.1 Hour 3Ato Full Load 1900 RPM

4 Hours 3Ato Full Load 1900 to 2200 RPM

u100 Hours All Loads 2200 RPM

. .

. Tractor- 4230rM-1056 (Aug-72)

Basic Engine 20Specifications and Special Tools 40-5

SPECIAL TOOLS--(Continued)No. Name

JD-246.JD-262"JDE-17A·JDE-11 -JDE-12*JDE-13-

Use

Remove and install gasoline water pump bearingRemove and install diesel water pump bearingInstall water pump sealPull governor needle bearingsInstall governor needle bearings and oil sealInstall speed control arm shaft and governor

drive shaft bushings

.Order from: Service Tools, Inc., 1901 Indiana Avenue, Chicago, Illinois, 60616..Order from: United Tool Processes Corp., Box 914, New Canaan, Connecticut, 06840

."Order from: NuDay Tool Co., 14615 Wyoming Avenue, Detroit, Michigan, 48238-. - -John Deere Parts

DriverDriverDriverPullerDriverDriver

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Litho in U.S.A.- --

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'..Tractor - 4230TM-1056 (Aug-72)

Fuel Systems 30Diagnosing Malfunctions 5-1.

," Section 30

FUEL SYSTEMSCONTENTS OF THIS SECTION

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Page

GROUP 5 - DIAGNOSINGMALFUNCTIONS 5-2

GROUP10 - AIR INTAKE SYSTEMAir Cleaner

General Information 10-1Removal ... ., ... .10-1Inspection and Service .10-1Installation 10-1

Restriction Indicator SwitchGeneral Information 10-2Testing Switch Operation. . . . . .. . ... . . .10-2

GROUP15 -DIESEL FUEL SYSTEMFuel Tank

Removal " . . . . . . . . . . . . . . . . . . . . .15-1Repair 15-2Installation 15-2

Fuel PumpGeneral Information .15-2Diagnosing Malfunctions 15-2Removal 15-2Repair .15-2Installation 15-2

Fuel FilterGeneral Information 15-3Bleeding Fuel System . . . . . . . . . . . . .15-3

Fuel Injection PumpGeneral Information 15-3Removal " 15-3Repair 15-4Installation ~.. . .. . . .. .. .. .15-4Adjusting Automatic Speed Advance .. . .15-5

Fuel Injection NozzlesGeneral Information 15-6Diagnosing Malfunctions 15-6Removal 15-6Repair 15-7Installation 15-7

Litho in U.S.A.

Page

GROUP 20 - GASOLINE FUEL SYSTEMFuel Tank

Removal 20-1Repair 20-2Installation .20-2

Sediment Bowl 20-2Fuel Pump

General Information" 20-2Diagnosing Malfunctions .. ~ . . . . . . . . . . .20-2Removal 20-2Repair ..., 20-2Installation" .. . . . . . . . . . . . . . . . . . . . . . . . .20-2

Fuel FilterGeneral Information .".. .20-3Removal.,. . . . . . . . . . . . . . . . . . . . . . . . . . .20-3Repair' . . . . . . . . . . . . . . . . . . '. . . . . . . . . . . .20-3Installation , .20-3

CarburetorGeneral'lnformation .20-3

,Operation 20-3Diagnosing Malfunctions " 20-6Removal 20-6Repair .. '. . . . . . . . . . . . . . . . . . . . . . . . . . . .20-8Installation .20-12Adjustments .20-12

GROUP 25 - SPEED CONTROL LINKAGEDiesel Speed Control Linkage ,

Removal .25-1Installation and Adjustment. .... . .25-1

Dieset Fuel Shut-Off Control "

Operation and Adjustment. . . . . . . . .. . . .25-2Gasoline Speed Control Linkage

Removal 25-3Installation and Adjustment. . . . ... .. .. .25-3

GROUP30- SPECIFICATIONS;AND SPECIAL TOOLS

Air Intake System ..30-1Dieset Fuel System .30-2Gasoline Fuel System.. . . . .. . . . .. . . . . . . ..30-3Speed Control Linkage. . . . . . . . . . . .. .30-3

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30 Fuel Systems5-2 Diagnosing Malfunctions

Group 5DIAGNOSING M.ALFUNCTIONS

The fOllowing is a gUide for diagnosing fuelsystem malfunctions. For specific fuel system com-ponents, refer to the groups which cover com-plete servicing.

Fuel Not Reaching Injection Pump orCarburetor

Filter clogged.Fuel line clogged or restricted.Electrical shut-off does not work (gasoline).Fuel too heavy at low temperatures (diesel).

Engine Starts Hard or Won't Start

Air leak on suction side of system.Fuel too heavy at low temperatures (diesel).Die3el injection nozzles faulty or sticking.Incorrect timing.Diesel automatic advance is faulty or not

operating.Water in fuel.Filter clogged.Injection pump return fuel line or fittings

restricted (diesel).Lowoctane or low cetane fuel.

Engine Starts and Stops

Electrical shut-off does not work (gasoline).Air leak on suction side of system.Filter clogged.Fuel lines clogged or restricted.Water irafuel.Injection pump return fuel line or fittings

restricted (diesel).

Erratic Engine Operation

Filler clogged.One or more connector screws obstructed

(diesel).Air leak on suction side of system.Fuel too heavy at low temperatures (diesel).Injection nozzles faulty or sticking (diesel).Fuel lines clogged or restricted.JncQrrecttiming.__ ___

: Diesel automatic advance faulty or not .op-erating.ater In fuel.

Injection pump return fuel line or fittingsrestricted (diesel).

Low octane or low cetane fuel.Injection nozzle return lines clogged (diesel).

Litho in U.S.A.

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Tractor - 42.30TM-1056 (Au~ 72)

- .

Engine Idles Poorly

Air leak on suction side of system.Injection nozzles fal,!ltyor sticking (diesel).Incorrect timing.Diesel automatic advance faulty or not op-

erating.Fuel lines clogged or restricted.Water in fuel. .

Injection pump return lines or fittings re-stricted (diesel).

injection nozzle return lines clogged (diesel).Low octane or low cetane fuel.One or more connector screws obstructed

(diesel).Injection pump housing not full of fuel (diesel).

Engine Does Not Develop FuJIPowerAir cleaner is restricted.Low octane or low cetane fuel.Incorrect timing.Diesel automatic advance faulty or not op-

erating.Filter clogged.Air leak on suction. side of system.Injection nozzles return lines clogged (diesel).Injection nozzles faulty or sticking (diesel).Injection pump return fuel line or fittings re-

stricted (diesel). .Injection pump housing not full of fuel (diesel).One or more connector screws obstructed

(diesel).Water in fuel.

Engine Smokes Black (Diesel)

Injection nozzles faulty or sticking.Injection pump timing incorrect.Injection pump automatic advance faulty or not

operating. .Low cetane fuel.Air cleaner element restricted.

(

Engine Smokes Blue or White (Diesel)

Cranking speed too low., Injection pump timing incorrect.~ Injection pump automatic advance faulty or not

operating.Injection nozzles faulty or sticking.Excessive wear in liners and/or stuck piston

rings.

'.- '.

J

Section 1- Construction and Operation

...

It:-

A. COMPONENTS AND FUNCTIONS

I t is necessary to become familiar with the function ofthe main components to understand the basic operatingprinciples of the Roosa Master DM pump. See cutawayview (Fig. 1.1) for construction details.

MAIN COMPONENTS1. Drive Shaft2. Distributor Rotor3. Transfer Pump Blades4. Pumping Plun~ers5. Internal Cam Ring6. Hydraulic Head7. Pressure Regula tor Assembly8. Governor9. Automatic Advance

10. Housing11. Metering Valve

The main rotating components are the drive shaft (1),distributor rotor (2), transfer pump blades (3), gov-ernor (8).With reference to Fig. 1.1, the drive shaft en~ages thedistributor rotor in the hydraulic head. The drive endof the DM2 rotor incorporates two pumping plungersand the DM-1incorporates four.The plungers are actuated to\"..ardeach other simulta-neous!}. by an internal cam ring through rollers andshoes which are carried in slots at the drive end of the

Fig..1.1

rotor. The number of cam lobes normally equals thenumberof enginecylinders. .

The transfer pump at the rear ofthe rotor is of the posi-tive displacement vane type and is enclosed in the endcap. The end cap also houses the Iuel inlet strainer andtransfer pump pressure regulator. The race of the regu-lator assembly is compressed by the spring washer andforms an end seal for the transfer pump.The distributor rotor incorporates two charging portsand a single axial bore with one dischar~e port to serveall head outlets to the injection lines. The weight re-tainer hub isa shrink fit to the drive end of the rotor.The hydraulic head contains theb.ore in which the rotorrevolves. the metering vaJve bore. the charging portsand the head discharge fittings. The hi~h pressure in-jection lines to the nozzles are fastened to these dis-charge fittings.The DM pump contains its own mechanical governor,capable of close speed regulation. The centrifugal forceof the weights in their retainer is transmitted throu~ asleeve to the go\'ernor arm and tarough a positive link.a~e to the metering valve. The meter:nt! valve can beclosed to shut-off fuel through a s-elidlinkage by an in-dependently operated shut-off lever.The automatic advance is a hydr81Illicmechanism whichadvances or retards the beginnin: of fuel delivery fromthe pump.

1.3

_0

Section 1- Construction and Operation

9. FUEL FLOW

The opera tin~ principles of the pump can be understoodmore readily by foHowing the fuel circuit during a com-plete pump cycle (Fig. 1.2). The fuel flow for the DM4(Fig. 1.3) is basically the same as that ofthe DM2 (Fig.1.4) with the exception of the charging of two addi-tional plungers. Fuel is drawn from the supply tankthrough filters into the pump through the inlet filter;creen (1) by the vane type fuel transfer pump (2).30me fuel is by-passed throul!h the pressure regulator3ssembly (3) to the suction side.r 'mder transfer pump pressure flows past the rotor

s (4) into an annulus on the rotor. It then flowstho . a connecting passage (5) in the head to the ad-..ance (G) and aho to the charging circuit (7). The fuelflows around the annulus (8) through a connecting- pas-;age to the metering valve (9). The radial position ofthe metering valve, controlled by the governor, regu-ates the flow of fuel into the charging annulus (10)Hhich incorporates the charging ports.

.

a INlETo TRANSFER PUMP PReSSUREa HOUSING PReS,.UREII: INJECTION UNE PilESSUREIi LUBE OIL

,.

c:.

Fig.1.2

As the rotor revolves, the two inlet passa~es (11) regis-ter with the charging ports in the hydraulic head, anow-jn~ fuel to flow into the pumping chamber. With furtherrotation, the inlet oassages move out of registry and thedischarge oort of the rotor registers with one of the headoutlets. While the dischar~e port is opened. the rollers(12) contact the cam lobes forcing the plungers to-gether. Fuel traoped between the plungers is then pres-surized 2nd delivered by the nozzle to the combustionchamber.

\vith the exceotion of the drive shaft bearing, self.lubrication of the pump is an inherent feature of theRoosa ~laster design. As fuel at transfer pump pressurereaches the charging ports, slots on the rotor shank al-low fuel and any entrapped air to flow into the pumphousing cavity.

(' In addition, an air vent passag-e (13) in the hydraulic: head connects the outlet side of the transfer pump with~ the pumo housinl!. This allows air and some fuel to be\ bled back to the fuel tank via the return line. The fuel'thus by-passed fills the housing and lubricates the inter-

nal components.1.4

£0.

0'.~.

. Tr.actor- 4230TM-1056 (Aug-72)

/Fuel Systems

Diesel Fuel System30

15-1

....

.

FUEL SHUT-OFF CABLE

LEAK-OFFPIPE

FUELFILTER

INJECTIONPUN?

Group 15DIESEL FUEL SYSTEM

FUELTANK

FUEL RETURNPIPE

SHUT-OFFVALVE

FUEL TANK

Fig. 1 - Diesel Fuel System

. 1. Disconnectfuel gauge sending unit wire(Fig. 2).

Removal

Remove side shields, grille screens, and hood.

Open the fuel tank drain cock (Fig. 3), anddrain fuel from tank. Fuel tank capacity is 38U.S. gallons.

0>.-

Fig. 2 - Fuel Tank RemovalProcedures

Litho in U.S.A.

2. Disconnect fuel pipe at shut-off valve.

3. Loosen air intake pipe hose clamps, and re-striction indicator switch wiring on left-hand endof air cleaner. Remove air cleaner.

4. Disconnect clamp from steering cylinderpipes.

5. Disconnect radiator brace rod and fuel re-turn pipe.

Fig.3- Fuel Tank MountingBolts

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30 Fuel Systems15-2 Diesel Fuel System

/ ."

Tractor- 4230TM-1056 (Aug-72)

Repair

h CAUTION:Cleaning and repairing a fuel~ tank is very dangerous. Live sparks, smok-ing, or fire of any nature shoutd never be permittedin the vicinity 0; the cleaning or repairingoperation.

: ""'\See F.

OS Manual 30 -:-ENC:NES for fuel

t a tank repair information. .

Installation .:. : ""

If tank was repair~; b~ sure the inside is asctean as possible before installing.

Install fuel gauge' float and sending unit (ifremoved). The air cleaner may also be installedat,this time.,

Fasten fuel tank to tractor front end support.

Connect fuel pipes, radiator brace rod, steeringpfpe clamp, and fuel gauge sending unit wire.Also connect air intake pipe hose to air cleaner,and tighten hose clamps securely. Install restric-tiof! indicator switch wiring.

Open fuel shut-off valve. Install hood, grille'screens, and side shields.

Fill tank with the proper grade of clean fuel(refer to the tractor operator's manual). Checkthe vent hole in fuel tank cap to make sure it isnot plugged.

Bleed the fuel system (page 30-15-3).

FUEl: PUMP

General Information

Fuel flows from the fuel tank at gravity pressureto the inlet side of the diaphragm-type pump. Thispump increases the fuel pressure to 31/2to 4Vzpsi(at idle speed), and forces fuel through the filterto the injection pump.

The fuel pump is operated by an eccentric lobeon the engine camshaft.

Diagnosing Malfunctions

Before replacing the pump when fuel does notflow (or only a small amount flows), check thefollowing sources that would limit pump per-formance:

Fuel shut off at tank.Hand primer left in the upward position.Clogged fuel line.Loose or damaged fuel line connections.

If correction of these conditions does not pro-vide, a satisfactory flow of fuel, the pump is defec-tive and must be replaced.

Removal

~)~~~

Fig. 4 - Fuel Pump

Close the fuel tank shut-off valve, and discon-nect the pump'inlet and outlet pipes' (Fig. 4).

Remove mounting stud nuts, and lift out pumpfrom engine block.

RepairThe fuel'pump is not designed to be repaired.

If pumpis defective,install a new one.

Installation

Be sure engine block pad is clean, and installpump.

Connect the fuel pipes and open the shut-offvalve.

Bleed the fuel system (see page 30-15-3). (:

/.: Tr.actor- 4230

TM-1056 (Aug-72)Fuel SY5t~ms 30

Diesel Fuel System 15-3

FUEL FILTER

A combination first and second stage filterelement is contained in the sediment bowl as acomplete assembly. The filter should be char.gedwhenever a tune-up or an overhaul has beenperformed on the engine. Otherwise, change asoften as necessary. See the tractor operator'smanual for service instructions.

BLEEDING FUEL SYSTEM

When the fuel filter is removed, bleed the airfrom the filter before attempting to start theengine. See the tractor operator's manual forbleeding instructions.

/). CAUTION: Escaping diesel fuel under pres-as sure can have sufficient force to penetratethe skin, causing serious personal injury. Beforedisconnecting lines be sure to relieve all pressure.Before applying pressure to the system, be sure

.all connections are tight and that lines, pipes andhoses are not damaged. Fluid escaping from avery small hole can be almost invisible. Use apiece of cardboard or wood, rather than hands, tosearch for suspected I~aks.

If injured by escaping fluid. see a doctor atonce. Serious infection or reaction can de'lelopIf proper medical treatment is not administeredimmediately.

FUEL INJECTION PUMP

General Information

The fuel injection pump used on the 4230 tractoris a Roosa Master. Model DM. This pump is singlecylinder, distributor-type, having an automaticspeed advance, and a manual fuel shut-off control.

DFor information on how a distributor-type

I R9S injection pump operates. ~ee FOS ManualLa 30 -:- ENGINES.

Removal

Clean the injection pump. pipes, and areaaround the pump with cleaning solvent or a steamcleaner.

IMPORTANT:Never steam clean or pour coldwater on an injection pump while the pump isrunning or while it is warm. To do so may causeseizure of pump parts..

Close the fuel shut-off valve at fuel tank.

Litho in U.S.A.

Fig. 5 -Injection Pump Removal Steps

Use the following method to remove:the inj~c-tion pump: . .

1. Remove the timing hole cover (Fig. 5j. Re-move the crankcase vent hose, and install enginerotation tool (Fig. 8). .

Rotate the engine until timing mark on governorweight retainer is in line with timing mark oncam ring Fig. 6).

Fig. 6 - Injection Pump Timing Marks

2. Remove fuel pump (page 30-15-2).

3. Disconnect the speed control rod at injectionpump.

30 Fuel Systems15-4 Diesel Fuel System

4. Disconnect injection pump inlet and pump-to-nozzle fuel pipes.

5. Disconnect shut-off cable from arm.

6. Disconnect fuel return pipe.

7. Clean area around timing gear cover andremove cover. Remove the three cap screws frompump' drive gear.. .

8. Remove mounting bolt nuts.

.-.~."..:~,...-

~..

Fig. 7 - Removing Infection Pump

Remove pump (Fig. 7). Be sure to cap all injec-tion pump and fuel pipe openings to prevent entryof contaminants.

Repair

For injection pump repair information and spe-cifications, refer to TM-1064"Fuel Injection Equip-ment-Roosa Master".

Installation

Check engine timing to make sure that No. 1piston is at TDC. If the engine was rotated afterthe injection pump was removed, crank the engineuntil No. 1 piston is starting the compressionstroke. Install timing pin (Fig. 8) in cylinder block.

I'Tractor- 4230

TM-1056 (Aug-72)

Fig. 8 - Rotation Tool and Timing Pin

The compression stroke can be determined by re-moving the rocker arm cover and turning theengine until both valves are closed on No. 1cylinder, and increased turning effort is noted.Continue turning the engine until timing pin en-gages the timing hole in flywheel.

Remove injection pump timing hole cover (Fig.5). Rotate pump drive. shaft and align the timingmark on governor weight carrier with the timingmark on the cam ring (Fig. 6).

Check pump mounting flange packing for dam-'age or wear. Replace if necessary.

[. Install injection pump on the engine so the topedge of the pump flange is parallel to the edgeof the mating flange on the cylinder block. Tightenhe mounting bolt nuts to 20-ft-lb.

Install the injection pump gear on hub '("~"in gear facing outward toward front of tractor),wHhf~elongated holes in gear apprQximatelycentered with holes in hub. Recheck pump timingmark alignment. If correct, install the timing gear-to-hub cap screws, and tighten to 35 ft-Ib.

Remove the timing pin from cylinder' block.Rotate the engine 1-1/2revolutions in direction ofrotation, then install timing pin in cylinder block.Continue to turn the engine until timing pin en-gages the timing hole in flywheel. Recheck thealignment of injection pump timing marks. Ifmarks are n'Jt in line, loosen the pump,igear capscrews, and bring marks into alignment. Retightencap screws to 35 ft-Ib.

Important: The normal backlash of gears isenough to throw the pump timing off by severaldegrees, resulting in poor engine performance.Therefore, it is very important that the timing of ~.'

the pump be rechecked after it has been installe~. {.

{

.-"~'~

-. .

./

Fuel Systems 30Diesel Fuel System 15-5

R18983t1

Fig.9 - Injection Pump.To-Nozzie Pipe Connections

Remove caps from injection pump and fuel pipeopenings.

Connect the injection pump-to-nozzle pipes. Re-ferring to Fig. 9, conne(.-. No. 1 outlet first andcontinue around the pump head in a counter-clockwise direction, attaching pipes in order ofengine firing (1-5-3-6-2-4).

Connect the speed control rod, fuel inlet pipeand return pipe to the injection pump.

Install fuel pump (page 30-15-2), and open thefuel shut-off valve.

Remove timing pin and rotation tool from en- .gine, and plug openings.

Install injection pump timing hole cover, andengine timing gear cover. Use new gaskets whennecessary.

Bleed the fuel system. See the tractor opera-tor's manual for bleeding instructions.

After bleeding the fuel system, the automaticspeed advance should be checked for properadjustment.

Automatic Speed AdvanceThe purpose of the automatil.; speed advance

(Fig. 10) is to insure optimum combustion formaximum power at higher engine speeds. This isdone by advancing or retarding the start of fueldelivery in response to changes in engine speed.As engine speed increases, the movement of thecarn ring also increases to a maximum of 6 de-grees. As engine speed decreases, the carn ringis forced to return to a retarded position.

Litho in U.S.A.

- ---

Fig. 11 - Adjusting Automatic Speed Advance

Remove the timing hole cover, and installNo. 19918 timing window (Fig. 11). Refer to "SPE-CIAL TOOLS" page 30-30-2.

./I

'- \...

';ZI30 Fuel Sy~tems15-6 Di~sel Fuel System

Start the engine and bring to operating tempera-ture.

Remove the sealing wire and seal cap from theside of injection pump. Loosen the lock nut andturn the advance trimmer screw out to retard, andin 10 advance. Each- rnarkon the timing w'indowrepresents 2 degrees. 'Select one of the speed andload conditions given in' the table below (prefer-ably the 1700 rpm, 5° advance at full load setting),and adjust the speed advance.

DegreesAdYenc8Full Load No LoadEngine "PM

13001700 502100 . 68

After adjusting the speed advance, tighten theIO.ck'nut, and install seal cap and sealing wire.

Remove timing window, and install timing holecover.

58

/-- If the automatic speed advance cannot be ad-

( justed to specifications, remove the pump from

I tractor, and adjust on test stand as described in\.. TM-1064.~cJ.-

FUEL INJECTION NOZZLES

General Information

The Roosa Master 9.5-millimeter fuel injectionnozzles are' of the inward opening, hydraulicallyoperated, multi-spray-hole type.

1"'1 For theory of operation, see FOS Manual 30i D ENGINES.

Refer to CAUTION on page 15-3 before workingwith injection nozzles.

Diagnosing MalfunctionsInjection nozzles should not be removed from

the engine as a routine maintenance procedure.Experience has shown that it is best to removethe asserylbly only after engine performance indi-cates that overhaul is necessary.

The following symptoms may indicate faultynozzle performance:

Engine starts hard or won't start.Erratic engine operation.Engine idles poorly.Engine does not develop full power.Engine smokes black, blue, or white.

Litho in" ~ A

Tractor - 42:10

TM-1056 (Mar.-!3). .-.

Removal -~ -... ' ."'-'"':'..~. - '.-...-

:.

,.~" '~::...:.;...~,,i<:::'\t~.U'__&..;;

;". :';)i NOZZLE" .:}1 INLET

>~ CONNECTOR

Fig. 12 --Injection Nozzle Removal Steps

IMPORTANT: Disconnect battery ground cablesbefore working on nozzles close to the alternatorto prevent accidental. short circuits through tools.

Disconnect nozzle from fuel pipe at connector,using two wrenches (Fig. 12).

Remove spring clamps from boot. Disconnectleak-off pipe, and remove pipe and boots.

Remove nozzle hold-down cap screw, washer,clamp, and spacer.

Fig. 13- RemovIngInjection Nozzle

'. .

..". ~T:;actor- 4230

Tfv;-1056 (Aug-72)

Remove injection nozzle. If nozzle cannot beeasily removed from cylinder head, use a JDE-38nozzle puller (Fig. 13).

IMPORTANT:Do not use a screwdriver or simi-lar tool to pry injection nozzles from cyJinder head.

. Doing so may cause distortion and permanent\ damage to the nozzles.( R ." epalr

/ ) IMPORTANT: Do not attempt to test or dis-assemble nozzles unless the proper service tools

\ are available. See iM-1064 uFuellnjection Equip-ment - Roosa Master" for specificalions, tools,and testing procedures necessary to service injec-

'. tion nozzles. .

Fig. 14 -Insta/fing Seal Washer and Carbon Seal

Remove carbon seal and seal washer (Fig. 14)from nozzle.

, ;,hn in 1/ ~ 1\---

IV

Fuel Systems 30Diesel Fuel System 15-7

Clean the exterior of nozzle by soaking in cleansolvent or diesel fuel. Then clean the spray tipusing a brass wire brush (No. 16488). See "SPE-CIAL TOOLS" page 30-30-2. ..

." IMPORTANT: Do not scrape or otherwise dam-\ age the Teflon coating on the l10zzle body above) the carbon seal groove. This coating will become

if discolored during normal service, but this is not\ harmful. Do not use a motor-driven brush to clean'-- the nozzle body.

Install u new seal washer. Using No. 16477 :pilottool, install a new carbon seal. A No. 16189 nozzleprotector cap may be helpful in pushing the sealfrom the pilot onto the nozzle body. .

Installation , .

Clean nozzle bore in engine cylinder head usingJDE-39 special tool.

Insert nozzle using a twisting motion.

Install nozzle hold-down spacer, clamp, washer,and cap screw. Hand-tighten cap screw.'

Connect fuel pipe to nozzle inlet and hand-.tighten.

Install boots and leak-off pipe.

Tighten nozzle hold-down cap screw to 20ft-Ib torque, and tighten inlet connector to 35 ft-Ibtorque.

Bleed the fuel system (page 3D-15-3).

.'-.7ractor- 4230

f -:"M-1056 (Mar-73)

. Fuel Systems 30Speci1ication~ and Special Tools 30-1

Group 30SPECIFICATIONS

AND SPECIAL TOOLS

Intake SystemAir Cleaner

SPECIFICATIONS

Item

Diesel - Air intake vacuum at 2200 engine rpm with clean filter elements:With air stack _.. 7 In.Without air stack 6 In.

Maximum permitted !~adiQg 25 in.Restriction required to activate indicator lamp 24-26 in.

Gasoline - Air intake vacuum at 2200 engine rpm (fullload) with clean filter elements:Withair stack _.. 6 in. waterWithout air stack 4 In. water

Maximum permitted reading at full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 in. waterRestriction required to activate indicator lamp 24-26 in. water

SpeciQcatioft

waterwaterwaterwater

Diesel Fuel SystemFuel Pump

Item Specllicalion

>.~..~

Normal operating pressure at idle speed. .. . .. . . .. .. . . . .. . . . . . . . .. .. . . . . .. 3-1/2to 4-¥zpsi

Fuel Injection Pump

Timing to engine TOCFast idle speed 2380-2420 rpmSlow idle speed 780-.820 rpmAutomatic speed advance FullLoad NoLoad

Advance at 1300 engine rpm - 5'Advance at 1700 engine rpm 5-Advance at 2100 engine rpm 6-Total advance movement 6- 6-

<-

~ Injection pump-to-cylinder block mounting stud nuts torque . . . . . . . . . . . . . . . . .. 20 ft-Ibs~ Timinggear-to-hubcapscrewstorque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 35 ft-Ibs

Injectionnozzlehold-downcap screws torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 20 ft-Ibs

Injectionnozzleinletconnectorto~~ f' .~'!.':' .-??:7z-:",:/!.'+,(A. . . . . . . . . . . . . . . . . .. 35 ft-IbsFiring order for ceuntelclo . rotating engine 153624Firinq order for cleck\l~se rotating engine 142635Gasoline Fuel System jf~~ . Ii

I ~/,c~,TLFuel Pump

Item Specification

Normaloperatingpressure at idle speed. .. . . . . .. .. . .. . . . . . . . .. . . . . . . . . . . '" 3-1/2to 4-¥z psi

Litho in U.S.A.

- - -

30 Fuel Systems30-2 Specifications and Spgcial Tools

,.-Tractor- 42::;.a ; \

TM-10S6 (Ma;~7J) .,

SPECIFICATIONS (Continued)

Carburetor

Float adjustment 2-1/64 in.Idle needle adjusting screw Open approx. 1- V4 turnsLoadneedle adjustingscrew. . . . . . . . . . . . .. . . .. . .. . . . . . . . . . . . . . . . . .. Open approx. 1-Yz to 2 turnsFast idle speed 2380-2420 rpmSlow idle speed 780-820 rpm

Speed Control Linka'geItem Specification

Force to move hand throttle 8 lb.Fast idle speed (Diesel and Gasoline) 2380-2420 rpmSlow idle speed (Diesel and Gasoline) 780-820 rpmClearance at leaf spring (Gasoline) 1/32 in.

SPECIAL TOOLS

No. Name Use

JDST':11" Water Vacuum Gauge Measuring air intake restricti~n.JDE-28* Speed IndicatorAdapter. . . . . . . . . . . . .. Usewithtachometerto

obtain accurate enginerpm reading.

19918* TimingWindow.. . . . . . . . . . .. . . . . . . . . . . . Adjust earn advance.JDE-28* Speed Indicator Adapter Use with tachometer to

obtain accurate enginerpm reading.

JDE-38'" Nozzle Puller Removing Roosa-Masterinjection nozzles.

16189* Nozzle Protector Cap Aiding installation ofcarbon seal.

16477* Pilot Tool Installing new carbon seal.16488* Brass Wire Brush Cleaning nozzles.C161-15** Extractor.. . . . . . . . .. . . . . . . . . . . . . . . . .. Removing accelerator

pump check valve.C161-121 ** SpecialWrench.. . .. . . . . .. . . . .. .. Removingpowerjetvalve.C161-124** Driver Installingaccelerator

pump check valve.C161-146** Driver Installing throttle

shaft needle bearings.C161-185*'" . . .. . . . .. . . .. .. .. Extractor Removing throttle sha.ft,

retainer and bearings.

C',

"Order from: Service Tools Incorporated, 1901 Indiana Avenue, Chicago, Illinois 60616.

""Order from your John Deere Sales Branch.. \

Litho in U.S.A.