8/14/2019 OPERATING INSTRUCTIONS FOR CAST IRON TYPE HYDRAULIC GEAR PUMPS

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OPERATING INSTRUCTIONS FOR CAST IRON TYPEHYDRAULIC GEAR PUMPS OF HEMA/DBH

1. BEFORE ASSEMBLY OF THE NEW PUMPS YOU HAVE TO FOLLOW BELOWPROCEDURE

a) Discharge hydraulic tank,hydraulic oil ,main hoses and its connections .As little andharmful metal particles which comes from old pump can have got into in your hydraulic

components and it causes big problem for your system. Therefore you must clean itcarefully.

b) Disassemble to the valves which are out of order previously in your hydraulic system.And then check these valves. f necessary repair it.

c) Discharge all hydraulic oil which is used by hydraulic components from whole system,

d) Renew connection and old hydraulic hoses in your system.Especially renew suctionhydraulic hoses which lost quality. In order to succeed that touch it and check to thesoftness of the hose.

e) Before assembly of the gear pump to the machine you must open to the pressure reliefvalve,valve groups. And check to the spring and spool holes . Renew conic elements,spool and faulty or break spring.

f) Adjust set pressure of the pump pressure relief valve to the zero position .

g) Throw out of the old filters which is used in pressure line ,suction line and return line ofthe system .And then you must use new filters which is suggested by machine

manufacturer .These new filters must have original filtering degree .

h) Dissassemle of the suction line strainer and clean it.During this cleaning operation ifnecessary dissassemble of the connection hoses and then clean and dry to the tankentirely.

i) Connect to the clean connection hoses and pipe connections .Close valve of the tank andfill up with proper hydraulic oil which is suggested by machine manifacturer tillmaximum level of the indicator on the tank.

j) Check drive shaft and coupling which is in the motor and gearbox. Broken or out oforder shafts must be changed. Otherwise pump gears ,parallel shaft,spline and shaft

bearings can be damaged easily.

8/14/2019 OPERATING INSTRUCTIONS FOR CAST IRON TYPE HYDRAULIC GEAR PUMPS

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2-ASSEMBLY OF THE PUMP TO THE MACHINE

a) Install pump shaft to the setting place .Mounting flange must be seat to the assemblingplace where on the drive shaft hole . And then mounting flange connection bolts and nutsmust be tghtened .These bolts and nuts must have 8.8 quality .Last tightening processmust be done with torquemeter. Using torquemeter equalize axial load on every bolts.

b) Fill up to the suction hoses with hydraulic oil and connect to the suction port flange withbolts.Hose flange or coupling oring must be installed properly.

c) Check pressure line hoses ,oring and these hoses must be tightened to the pressure line ofthe pump .Especially in multiple pumps connection of the pressure line hoses must bechecked .As pressure line hoses can be tightened wrong pump

MOST IMPORTANT ; Disassemble hoses must be checked because some piece of clothescan got into disassemble hoses .Therefore these hoses must be checked manually

d) After completing to the hoses connections and checking to the valve .Tank valves mustbe opened and decreasing of the oil level must be observed and completed .

e) Suction port flange bolts must be loosened slightly. Till hyraulic oil appears .As soon as

hydraulic oil appears these bolts must be tigthened again. These process must be madeperfectly. As while operating of the system .Pump musnt be sucked air for any reason

3-START UP TO THE HYDRAULIC GEAR PUMPa) Before starting up to the machine while all valves in neutral position.Revolve shaft one

or more revolution finally start up to the motor which operates to the pump on neutraland unloading position

b) During operating of the motor. You must listen to the hydraulic equipments and regionwhere the pump is in .In addition to this new pump must start up between 10 and 15minutes

c) During this 10-15 minutes hydraulic oil level in the tank hydraulic hoses must bechecked due to leakage of from hydraulic hoses

d) During above procedure if you didnt any improper function . Presure relief valve of thepump must be adjusted from hydraulic diagram During start up of the hydraulicequipments (motor,pump,lift etc ) you musnt adjust pressure relief valve because

e) Presure relief valve operates when hydraulic components comes to at the end of thestroke .

8/14/2019 OPERATING INSTRUCTIONS FOR CAST IRON TYPE HYDRAULIC GEAR PUMPS

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f) After you adjust to the pressure relief valve .if your hydraulic circuit contains shockvalve you must adjust shock valve .Shock valve set pressure always set to the over % 15of the opertaing pressure of the system.

g) Check oil level of the hydraulic equipments,

h) Adjust to the level of hydraulic oil in the tank while maximum hydraulic oil out of thetank

i) Check temperature indicator on the tank .Temperature musnt pass to the 85 C .Duringinitial start up of the pump you must check that pump frequently in first 5 hoursmanually,

j) If you observe overheated in your system you must check radiator absolutely yourradiator may have dirt .If your radiator contains fan ,Fan motor maybe breakdown,

k) You dont start up new pumps on overheated and over operating pressure Otherwise youfacedwith some problems like that fire,cutting shaft, bearing failure and body crack,

4 . In order to do not faced with any problem you must obey to the periodic care ruleswhich are given to you by machine manifacturer. If you dont have you must follow these

procedure ,

a) You must check hydraulic oil leakage ,hydraulic oil level and dirtyness condition of thesystem once every 50 hours ,

b) You must check hydraulic filters and oil level in the tank once every 250 hours,

c) Renew hydraulic filters once 500 hours ,

d) Change hydraulc oil once 1500-2000 hours. During changing operation of the hydraulicoil from the tank. Check air ventilation of the tank and Check tightening of theconnection bolts and nuts to the pump

e) You must make maintainance of your hydraulic gear pump every 6000 hours,

MOST IMPORTANT: DONT REUSED IMPRAGNATED PAPER FILTER. WHEN FILTERELEMENTS BECOME CHOKED YOU MUST DISCARDED AND NEW ELEMENTSFITTED

HATTAT OTOMOTV PAZARLAMA A.