engine 4g15
TRANSCRIPT
![Page 1: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/1.jpg)
Copy Right © Akademi Saga/EON Berhad
![Page 2: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/2.jpg)
Classification Of Engine
Stroke Cycle Operation
Combustion Cooling ValveMechanism
CylinderArrangement
• Four Stroke Cycle Engine
• Two Stroke Cycle Engine
• Spark Ignition Engine ….Petrol
• Compression Ignition….Diesel
• Water Cooled
• Air Cooled
• OverHead Valve
• OverHead Cams
CLASSIFICATION OF ENGINE
Classification Of Engine
• Four Stroke Cycle Engine
• Two Stroke Cycle Engine
• Spark Ignition Engine ….Petrol
• Compression Ignition….Diesel
• Water Cooled
• Air Cooled
• OverHead Valve
• OverHead Cams
• In-Line
• V Type
• Horizontally Opposed Type
• Horizontally Mounted Type
![Page 3: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/3.jpg)
COMBUSTION REQUIREMENTS
There is three condition are required to run the engine smoothly :
Proper Compression
Proper Air/Fuel Mixture
Proper Sparking
![Page 4: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/4.jpg)
Copy Right © Akademi Saga/EON Berhad
Block Manufacturing Design
• The main structure of engine.• All other engine parts attached to cylinder block
CYLINDER BLOCK
![Page 5: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/5.jpg)
Copy Right © Akademi Saga/EON Berhad
Crankshaft Design
• Two type manufactured
a. Forged Steelb. Cast Iron
CRANKSHAFT ASSEMBLY
![Page 6: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/6.jpg)
Copy Right © Akademi Saga/EON Berhad
Bearing Design
BEARING ASSEMBLY
![Page 7: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/7.jpg)
Copy Right © Akademi Saga/EON Berhad
Thrust Bearing
To absorb axial or thrust motion
BEARING ASSEMBLY
![Page 8: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/8.jpg)
Copy Right © Akademi Saga/EON Berhad
Bearing Clearance
• Bearing clearance determine how much oil will flow past and out• To small or much clearance will effect engine condition and performance
BEARING ASSEMBLY
![Page 9: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/9.jpg)
Copy Right © Akademi Saga/EON Berhad
Piston And Rod Assembly
PISTON ASSEMBLY
• Piston and rod are used to transmit the power from combustion to the crankshaft
![Page 10: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/10.jpg)
Copy Right © Akademi Saga/EON Berhad
Piston Parts
PISTON ASSEMBLY
• Most piston made from hollow aluminum alloy.• It’s design to operate under severe temperature
![Page 11: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/11.jpg)
Copy Right © Akademi Saga/EON Berhad
Connecting Rod
PISTON ASSEMBLY
• Purposely to change energy motion• As a lubrication system component
![Page 12: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/12.jpg)
Copy Right © Akademi Saga/EON Berhad
Cylinder Head Design and Manufacturing
CYLINDER HEAD
• It is used for sealing• Head design example Valve port, combustion chamber coolant passage and material will effect system operation
![Page 13: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/13.jpg)
Copy Right © Akademi Saga/EON Berhad
Gasoline Combustion Chamber
CYLINDER HEAD
• Placed Air/Fuel mixing and explode
• Type of combustion chamber and head shape will change engine performance.
• Turbulence cause better combustion
• Quench area will get better turbulence efficiency and for cooling system
• Type of combustion chamber are commonly used
a. Hemispherical type
b. Wedge Shaped Type
c. Pent roof type
![Page 14: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/14.jpg)
Copy Right © Akademi Saga/EON Berhad
Valve Parts
VALVE ASSEMBLY
• It is made of very strong metal with nickel, chromium and other material
![Page 15: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/15.jpg)
Copy Right © Akademi Saga/EON Berhad
Valve Seat
VALVE ASSEMBLY
• Valve seat help the valve seal to cylinder block or head
![Page 16: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/16.jpg)
Copy Right © Akademi Saga/EON Berhad
Valve Spring
VALVE ASSEMBLY
• Valve keeper or log was used to keep the valve spring and retainer in place
![Page 17: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/17.jpg)
Copy Right © Akademi Saga/EON Berhad
Lubricating system was most importance thing on engine operation
The system composed of several parts include :
a. Oil Pan
b. Oil Pump
c. Main Oil Gallery
d. Oil Filter
e. Pressure Regulator
f. Oil Cooler
g. Oil Sensor
LUBRICATING SYSTEM OPERATION
![Page 18: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/18.jpg)
Copy Right © Akademi Saga/EON Berhad
Oil Flow System
LUBRICATING SYSTEM OPERATION
• Oil flow from oil pan, through the pump and into the main gallery
![Page 19: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/19.jpg)
Copy Right © Akademi Saga/EON Berhad
Oil Flow System
LUBRICATING SYSTEM OPERATION
• Oil from main gallery is sent through passages into the crankshaft.
![Page 20: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/20.jpg)
Copy Right © Akademi Saga/EON Berhad
Oil Pump System
LUBRICATING SYSTEM OPERATION
• Oil pump was direct drive by crankshaft, belt or change• Three type commonly used are :
a. Gear Typeb. Eccentric Typec. Trochoid Type
![Page 21: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/21.jpg)
Copy Right © Akademi Saga/EON Berhad
Oil Pressure Regulating Valve
LUBRICATING SYSTEM OPERATION
• Purposely to maintain, increase and reduce oil pressure to main oil gallery
![Page 22: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/22.jpg)
Copy Right © Akademi Saga/EON Berhad
Purpose Of Cooling System
COOLING SYSTEM OPERATION
• To maintain operating temperature.
• To remove Excess heat
• To bring working temperature.
![Page 23: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/23.jpg)
Copy Right © Akademi Saga/EON Berhad
Liquid Cooled Engine
COOLING SYSTEM OPERATION
Coolant is pumped from water pump, through the block and head, thermostats into radiator.
![Page 24: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/24.jpg)
FOUR STROKE CYCLE
Copy Right © Akademi Saga/EON Berhad
FOUR CYCLE ENGINE
•4 Stroke engine can also called a 4 cycle engine.
•These four stroke are titled : 1. Intake 2. compression 3. power 4. exhaust
![Page 25: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/25.jpg)
FOUR STROKE CYCLE
Copy Right © Akademi Saga/EON Berhad
INTAKE STROKE
•As the piston is cranked downward called the intake stroke,air and fuel are drawn into cylinder.
•Because the piston moves down a vacuum is created.
![Page 26: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/26.jpg)
FOUR STROKE CYCLE
Copy Right © Akademi Saga/EON Berhad
COMPRESSION STROKE
•The compression stroke takes the air fuel mixture and compresses it according to the compression ratio of engine.
•The higher the compression ratio the greater the mixing of air and fuel.
![Page 27: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/27.jpg)
FOUR STROKE CYCLE
Copy Right © Akademi Saga/EON Berhad
POWER STROKE
•Both the intake and exhaust valve remain closed.•The piston is coming up on the compression stroke,spark will occur very near TDC.•At this point air,fuel and ignition are present,than air and fuel to explode.
![Page 28: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/28.jpg)
FOUR STROKE CYCLE
Copy Right © Akademi Saga/EON Berhad
EXHAUST STROKE
•The exhaust stroke starts when the piston starts moving upward again.•At the beginning of the exhaust stroke ,the exhaust valve opens.
![Page 29: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/29.jpg)
Copy Right © Akademi Saga/EON Berhad
ENGINE SPECIFICATIONspecification
Bore x Stroke
Under square Engine
- Length of the stroke greater than the diameter of the bore
- Purposely long-stroke design provided greater torque in the low speed range
Over square Engine
- Diameter of bore is longer than the length of the stroke
- Also called short stroke engine
- Purposely can increase torque at high speed
![Page 30: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/30.jpg)
Copy Right © Akademi Saga/EON Berhad
ENGINE SPECIFICATION
Compression ratio
•During engine operation the air and fuel mixture must be compressed
•This compression helps squeeze and mix the air and fuel molecules for better combustion
![Page 31: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/31.jpg)
Copy Right © Akademi Saga/EON Berhad
ENGINE SPECIFICATION
HOW TO MEASURE TOTAL DISPLACEMENT
TOTAL DISPLACEMENT [
Bore
] Stroke
0.7854 x Bore²(cm) x Stroke(cm) x No.Cyl.
Example : 0.7854 x 7.6 x 7.6 x 8.73 x 4
=1584 cc
3.143.14 44
==F/m :F/m : ππ x Dx D² x L x 4² x L x 4
![Page 32: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/32.jpg)
Copy Right © Akademi Saga/EON Berhad
ENGINE SPECIFICATION
Specification
Clearance Volume (CV) + Swept Volume (SV) Clearance Volume (CV)
SV
CV
Compression Ratio
HOW TO MEASURE COMPRESSION RATIO
![Page 33: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/33.jpg)
TIMING DIAGRAMS
Copy Right © Akademi Saga/EON Berhad
![Page 34: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/34.jpg)
Engine Specification
Copy Right © Akademi Saga/EON Berhad
Specification OPP NPP(MAGMA) 12 VALVE
ENGINE MODEL 4G13 4G15 4G13 4G15 4G13 4G15Combustion chamber type Hemi-
sphericalHemi-
sphericalCompact type Compact
typePentroof
typePentroof
type
Compression ratio 9.8 9.5 9.7 9.4 9.5 9.2
Valve Arrangement OHV OHV OHV OHV OHV OHV
Total Displacement 1298 1468 1298 1468 1298 1468
Bore X stroke mm 71 x 82 75.5 x 82 71 x82 75.5 x 82 71 x 82 75.5 x 82
Valve timing
intake
Opened
19 19 19 19 15 15
Closed
57 57 57 57 53 53
exhaust
Opened
57 57 57 57 57 57
Closed
19 19 19 57 15 15
![Page 35: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/35.jpg)
GENERAL INFORMATION
Copy Right © Akademi Saga/EON BerhadENGINES 4G1 SERIES
TECHNICAL FEATURES
•The engines for the ISWARA 1.3 & 1.5 model of a SOHC type develop based on MITSHUBISHI “CYCLONE” series
•It employ three valve per cylinder
•The combustion chamber is a pentroof type which improves combustion process
![Page 36: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/36.jpg)
Copy Right © Akademi Saga/EON Berhad
THE CYLINDER HEAD
•The cylinder head is made of aluminum alloy•2 intake ports at each chamber
•Roller type rocker arm for smooth operation and reduces frictional resistance
![Page 37: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/37.jpg)
Copy Right © Akademi Saga/EON Berhad
LUBRICATION SYSTEM
•Is a forced feed full flow filtration type
•Oil pump is of “trochoid rotor”
•The inner rotor of the pump is driven by the crankshaft
![Page 38: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/38.jpg)
Copy Right © Akademi Saga/EON Berhad
COOLING SYSTEM
•The system utilieses a pressured and corrugated fin type radiator
•Fan is electrically driven and operates automatically according to coolant temperature.
![Page 39: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/39.jpg)
Copy Right © Akademi Saga/EON Berhad
INDUCTIONSYSTEM
•Air cleaner is an “Axial Flow” and it has a special features.
•Large filteration area and reduction in flow resistance
•Decreasing the percentage of pollutants in the exhaust gases
![Page 40: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/40.jpg)
Copy Right © Akademi Saga/EON Berhad
EXHAUST SYSTEM
•The exhaust manifold is made of cast iron and designed with dual outlet to reduce the exhaust interface.
![Page 41: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/41.jpg)
Plastic region tightening method
XX
Elastic regionElastic region Plastic regionPlastic region
FailureFailureSmall variationSmall variation
Large variationLarge variation
YieldingYieldingPoint Point
Variation in Variation in tightening angletightening angle
Torque variationTorque variation Angle of bolt rotationAngle of bolt rotation
Pla
stic
reg
ion
tight
enin
g P
last
ic r
egio
n tig
hten
ing
met
hod
met
hod
Cal
ibra
ted
wre
nch
Cal
ibra
ted
wre
nch
Tig
hten
ing
met
hod
Tig
hten
ing
met
hod Axial
tensionCylinder head
Tightening torque
Copy Right © Akademi Saga/EON Berhad
![Page 42: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/42.jpg)
Tightening procedure
Copy Right © Akademi Saga/EON Berhad
11
33
44
55
22
7.4 Kgm7.4 Kgm
2.0 Kgm2.0 Kgm
9090°°
9090°°Axi
al t
ensi
on
Axi
al t
ensi
on Plastic regionPlastic region
![Page 43: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/43.jpg)
Tighten the bolts by the following procedure (4G9)
STEP OPERATION REMARKS
1 Tighten to 74 Nm Carry out in the order shown in the illustration
2 Fully loosen Carry out in the reverse order of that shown in the illustration
3 Tighten to 20 Nm Carry out in the order shown in the illustration
4 Tighten ¼ of a turn ( 90° ) Carry out in the order shown in the illustration
5 Tighten ¼ of a turn ( 90° ) Carry out in the order shown in the illustration
Copy Right © Akademi Saga/EON Berhad
![Page 44: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/44.jpg)
Type of compression ring
Copy Right © Akademi Saga/EON Berhad
Plane type
Combustion gasCombustion gas
PistonPiston
Cyl
ind
erC
ylin
der
Tapered face type
PistonPiston
Cyl
ind
erC
ylin
der
OilOil
Inner bevel type
Combustion gasCombustion gas
PistonPiston
Cyl
ind
erC
ylin
der
OilOil
![Page 45: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/45.jpg)
Type of piston pin
SEMI-FLOATING TYPE FULL-FLOATING TYPE
Copy Right © Akademi Saga/EON Berhad
![Page 46: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/46.jpg)
Piston pin installation
Guide C
Push Rod
Base
FrtMark
C D
Guide AGuide B
3 mm
BA
C D
L = L = ( A – C ) – ( B – D )( A – C ) – ( B – D ) 22
Copy Right © Akademi Saga/EON Berhad
![Page 47: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/47.jpg)
Lubrication system 4G15
Lubrication System
• Used full flow pressure feed system• Oil Capacity up to 3.8 L• Engine oil is feed up by oil pump drive by crank shaft and oil pump gear• Oil pump used trochoid gear type and relief valve incorporated in the front case.
Copy Right © Akademi Saga/EON Berhad
![Page 48: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/48.jpg)
Valve clearance adjustment
Position the No. 1 cylinder at top dead center on the compression stroke
Standard value : on cold engineIntake : 0.09 mm (0.004 in)Exhaust : 0.20 mm (0.008 in)
Copy Right © Akademi Saga/EON Berhad
![Page 49: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/49.jpg)
Oil Pump Relief Valve
Copy Right © Akademi Saga/EON Berhad
Relief valveRelief valve
Relief valve purpose to adopted for Relief valve purpose to adopted for reduction of aerationreduction of aeration
![Page 50: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/50.jpg)
Crankshaft Pulley
Rubber
Hub
Pulley
Fin
Copy Right © Akademi Saga/EON Berhad
The crankshaft pulley consists of a cast-iron pulley and hub connected by a rubber section. It also functions as a torsional damper that minimizes twisting vibration of the crankshaft.
![Page 51: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/51.jpg)
![Page 52: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/52.jpg)
![Page 53: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/53.jpg)
![Page 54: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/54.jpg)
![Page 55: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/55.jpg)
![Page 56: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/56.jpg)
![Page 57: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/57.jpg)
![Page 58: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/58.jpg)
![Page 59: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/59.jpg)
Copy Right © Akademi Saga/EON Berhad
![Page 60: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/60.jpg)
VERNIER CALIPERVERNIER CALIPER
Copy Right © Akademi Saga/EON Berhad
![Page 61: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/61.jpg)
HOW TO READ SCALEHOW TO READ SCALE
Copy Right © Akademi Saga/EON Berhad
Formula for reading length L (mm) L = L1 + XX = No. of graduations x 0.05
AA
BB
![Page 62: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/62.jpg)
Copy Right © Akademi Saga/EON Berhad
MEASURING PROCEDUREMEASURING PROCEDURE
Outside diameter Inside diameter Depth
Correct way
Wrong way
Venire scale jaw
Outside diameter
Object to be measured
Regular scale jaw
Regular scale jaw
Object to be measured
Depth stick
![Page 63: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/63.jpg)
MEASURING PROCEDUREMEASURING PROCEDURE
Copy Right © Akademi Saga/EON Berhad
Point to note when using micrometer :Point to note when using micrometer :a)a) Clean the micrometer and the surface to be measuredClean the micrometer and the surface to be measuredb)b) Check the zero position (through use of a standard gaugeCheck the zero position (through use of a standard gauge
![Page 64: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/64.jpg)
MEASURING PROCEDUREMEASURING PROCEDURE
Copy Right © Akademi Saga/EON Berhad
![Page 65: Engine 4G15](https://reader035.vdocument.in/reader035/viewer/2022081720/55a2038d1a28ab42268b4816/html5/thumbnails/65.jpg)
Copy Right © Akademi Saga/EON Berhad