Isuzu engine 4j series. Manual — part 54
6A1 – 84 4JB1/4JB1T/4JB1TC/4JG2 - ENGINE
INSTALLATION
3. Flywheel
•
Apply engine oil to fixing bolts.
•
Tighten the flywheel bolts to the specified torque in two
steps using the Angular Tightening Method.
Follow the numerical order shown in the illustration.
Flywheel Bolt Torque
N∙m (kg∙m/lb∙ft)
1st Step
2nd Step
59 (6.0/43)
60° - 90°
2. Pilot Bearing
•
Install the pilot bearing using installer.
Pilot bearing Installer: 5-8522-0024-0
1. Transmission and Clutch Assembly
2) Clutch
1) Transmission
Above works refer to “ENGINE ASSEMBLY” Section in
this manual.
6A1-84-1.tif
6A1-84-2.tif
4JB1/4JB1T/4JB1TC/4JG2 – ENGINE 6A1 – 85
CRANKSHAFT AND MAIN BEARINGS
6A1-85-1.tif
Removal steps
1. Transmission and clutch Assembly
2. Engine Assembly
3. Cylinder head Assembly and
gasket
4. Timing gear (Gear drive model)
4a. Timing belt (Belt drive model)
5. Oil pan Assembly
6. Oil pump Assembly
7. Piston cooling oil pipe
8. Piston and connecting rod
Assembly
9. Front oil seal
10. Timing gear housing
10a. Timing pulley housing
11. Water pump Assembly
12. Flywheel and rear plate
13. Rear oil seal
14. Crankshaft and main bearing
Installation steps
To install, follow the removal steps in
the reverse order.
8888
10a
6A1 – 86 4JB1/4JB1T/4JB1TC/4JG2 - ENGINE
REMOVAL
Preparation:
•
Disconnect battery ground cable.
•
Drain coolant from the radiator and engine.
1. Transmission and Clutch Assembly
1) Transmission
2) Clutch
Above works refer to “ENGINE ASSEMBLY” Section in
this manual.
2. Engine Assembly
1) Radiator assembly
2) Intake air duct
3) Heater hose
4) Engine control cable
5) Glow plug harness
6) Fuel hose
7) Oil pressure switch harness
8) A/C compressor assembly
9) Power steering pump bracket assembly (Power
Steering Model)
10) Actuator vacuum hose (Exh. Brake Model)
11) Vacuum pump hose (Exh. Brake Model)
12) Front exhaust pipe
13) Support rubber
14) Engine assembly
Above works refer to “ENGINE ASSEMBLY” Section in
this manual.
3. Cylinder Head Assembly and Gasket
1) Injection pipe
2) Leak off pipe
3) PCV hose
4) Glow plug harness
5) Oil level gauge guide tube
6) Oil cooler water pipe (Oil Cooler Model)
7) By-pass hose
8) Cylinder head cover
9) Rocker arm shaft
10) Push rod
11) Cylinder head assembly
12) Cylinder head gasket
Above works refer to “CYLINDER HEAD ASSEMBLY
AND GASKET” Section in this manual.
4JB1/4JB1T/4JB1TC/4JG2 – ENGINE 6A1 – 87
4. Timing Gear (Gear Drive Model)
1) Cooling fan assembly
2) Crankshaft damper pulley
3) Noise shield cover
4) Noise cover spacer
5) Timing gear case cover
6) Oil pipe
7) Idle gear
8) Idle gear “B" and shaft
9) Injection pump
10) Camshaft timing gear
Above works refer to “TIMING GEAR (Gear Type)”
Section in this manual.
11) Crankshaft gear
•
Use the crankshaft timing gear remover
!
to remove
the crankshaft gear
"
.
Crankshaft Timing Gear Remover: 5-8840-2057-0
4a. Timing Belt (Belt Drive Model)
1) Cooling fan assembly
2) Crankshaft damper pulley
3) Timing pulley upper cover
4) Timing pulley lower cover
5) Flange: camshaft pulley
6) Flange: injection pump pulley
7) Timing belt
Above works refer to “TIMING BELT (Belt Type)”
Section in this manual.
8) Crankshaft timing pulley center
•
Use the fixing wrench to prevent the crankshaft from
turning.
Fixing Wrench: 5-8840-0161-0
•
Remove the timing pulley center from the crankshaft.
6A1-87-1.tif
6A1-87-2.tif
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