Page 830 of 6020

ENGINE MECHANICAL 6A – 25
Replenished Engine Oil MAX lit (US/UK gal)
Condition
Model Engine Dry
W ith oil filter
replacement W ithout oil
filter
replacement
4 × 2
4 × 4
(4JA1L/TC)6.2 (1.64/1.36) 5.2 ∼ 4.2
(1.37 ∼ 1.11
/ 1.14 ∼ 0.92) 4.5
∼ 3.5
(1.19 ∼ 0.93
/ 0.99 ∼ 0.77)
4 × 2
(4JH1TC)
6.2 (1.64/1.36) 5.2
∼ 4.2
(1.37 ∼ 1.11
/ 1.14 ∼ 0.92) 4.5
∼ 3.5
(1.19 ∼ 0.93
/ 0.99 ∼ 0.77)
4 × 4
(4JH1TC) 7.0 (1.85/1.54) 6.2 ∼ 5.2
(1.64 ∼ 1.37
/ 1.36 ∼ 1.14) 5.3
∼ 4.3
(1.72 ∼ 1.14
/ 1.17 ∼ 0.95)
9. Start the engine and check for oil leakage from the
main oil filter.
RTW 66ASH003201
FUEL SYSTEM
Fuel Filter Replacement Procedure
1. Remove the fuel filter by turning it counterclockwise with a filter wrench.
Filter W rench: 5-8840-0253-0 (J-22700)
Note:
Be careful not to spill the fuel in the filter cartridge.
RTW 66ASH003301
2. Clean the fuel filter cartridge fitting faces. This will allow the new fuel filter to seat properly
3. Apply a light coat of engine oil to the O-ring.
4. Turn in the fuel filter until the sealing face comes in contact with the O-ring.
5. Turn in the fuel filter an additional 2/3 of a turn with a filter wrench.
Filter W rench : 5-8840-0253-0 (J-22700)
6. Operate the priming pump until the air discharged completely from fuel system.
7. Start the engine and check for fuel leakage.
Note:
The use of an ISUZU genuine fuel filter is strongly
recommended.
041RY00009
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ISUZU KB P190 2007
Page 831 of 6020

6A – 26 ENGINE MECHANICAL
041RY00011
Draining Procedure
The indicator light will come on when the water level in the
water separator exceeds the specified level.
Drain the water and foreign material from the water
separator (inside chassis frame) with the following
procedure.
1. Place the drain pan under the drain plug.
2. Loosen the drain plug and drain water.
3. After draining the water, tighten the drain plug.
4. Operate the priming pump on the fuel filter several times and check for fuel leakage.
5. Check the water separator indicator light. It should be off.
Except EURO III model
RTW 46ASH002901
For EURO III model
RTW 46ASH000501
Air Bleeding
1. Operate the priming pump until strong resistance is felt.
2. W ait 1 minute, and operate the priming pump until strong resistance is felt.
3. Once more wait, and operate the priming pump until strong resistance is felt.
4. Turn the ignition switch to the "ON" position. W ait until the glow indicator lamp turns off.
5. Turn the ignition switch to the "START" position and crank the engine until it starts.
6. If the engine does not start, repeat Step 3 - 5.
7. Allow the engine to idle for 3 minutes to bleed air completely form the fuel system and check for fuel
leakage.
Note:
Insufficient air bleeding may cause the Diagnostic
Trouble Code (DTC) store or improper engine
performance.
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ISUZU KB P190 2007
Page 845 of 6020
6A – 40 ENGINE MECHANICAL
140R300001
26. Fuel Hose
Remove the fuel hose from the fuel filter (Except EURO
III).
RTW 46ASH000501
Remove the fuel hose from injection pump (EURO III
only).
27. Exhaust Pipe Remove the front exhaust pipe bolts and separate the
exhaust manifold and the front exhaust pipe.
28. Engine Assembly
1) Remove two right side engine foot bolts.
2) Remove two left side engine mount bolts.
3) Use the hoist to lift the engine from the engine compartment.
Installation
To reassemble, follow the removal steps in the reverse
order.
022R300002
F06R300008
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ISUZU KB P190 2007
Page 848 of 6020
ENGINE MECHANICAL 6A – 43
ENGINE OVERHAUL
REMOVAL
EXTERNAL PARTS
RTW 36AMF000401
Removal Steps
1. Clutch Assembly or Flex Plate
2. Intake Pipe and Throttle Body
3-1. EGR Pipe
3-2. EGR cooler (EURO III model only)
4. EGR Valve
5. Oil Level Gauge
6. Fuel Filter Assembly (Except EURO III)
7. Fuel Filter Bracket (Except EURO III)
8. Fuel Injection Pipe with Clip
9. Power Steering Oil Pump Bracket
10. Intake Manifold
11. Engine Mounting Bracket and Foot
12. Injection Pump Cover
13. Injection Pump
14. Starter Motor
15. Oil Pressure W arning Switch
16. Fuel Leak Off Pipe
17. Oil Cooler W ater Pipe
18. Cooling Fan Pulley
19. Heat Protector
20. Catalytic Converter
21. Turbocharger
22. Compressor Bracket
23. Vacuum Pump Oil Return Hose
24. Generator and Adjusting Plate
25. W ater Inlet Pipe
26. Generator Bracket
27. Oil Cooler with Oil Filter
28. Exhaust Manifold
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ISUZU KB P190 2007
Page 850 of 6020

ENGINE MECHANICAL 6A – 45
4JA1L
RTW 46ASH001001
4. EGR Valve
1) Remove four nuts and remove the EGR valve assembly from the intake manifold.
2) Remove four bolts and remove the adapter from the EGR valve assembly.
4JA1TC RTW 46ASH000901
5. Oil Level Gauge
1) Disconnect PCV hose.
2) Remove two bolts and remove the engine oil level gauge.
6. Fuel Filter Assembly (Except EURO III model) 1) Disconnect fuel hose.
2) Remove two bolts and remove the fuel filter.
7. Fuel Filter Bracket (Except EURO III model)
Remove three bolts and remove the fuel filter bracket with
leak pipe.
4JH1TC RTW 36ASH001201
8. Fuel Injection Pipe with Clip
1) Loosen the injection pipe sleeve nuts at pump side and nozzle side.
Do not apply excessive force to the injection pipes.
2) Loosen the injection pipe clips.
3) Remove the injection pipe.
NOTE:
Plug the delivery holder ports with the caps to prevent the
entry of foreign material.
9. Power Steering Oil Pump Bracket
RTW 36ASH000701
10. Intake Manifold
1) Disconnect the PCV hose from the cylinder head cover.
2) Remove the intake manifold with gasket.
11. Engine Mounting Bracket and Foot
12. Injection Pump Cover
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ISUZU KB P190 2007
Page 851 of 6020
6A – 46 ENGINE MECHANICAL
13. Injection Pump
Refer to section 6C-19 (Injection Pump)
14. Starter Motor
15. Oil Pressure Warning Switch
16. Fuel Leak Off Pipe
17. Oil Cooler Water Pipe
18. Cooling Fan Pulley
19. Heat Protector
20. Catalytic Converter
21. Turbocharger 1) Disconnect the water hose between thermostat housing cover and turbocharger.
2) Disconnect the water hose between water inlet pipe and turbocharger.
3) Remove the oil feed pipe.
4) Remove the oil return pipe.
5) Remove the turbocharger and the gasket.
NOTE:
Plug the turbocharger body oil ports and water ports after
removing the turbocharger assembly to prevent the entry
of foreign material.
22. Compressor Bracket
23. Vacuum Pump Oil Return Hose
24. Generator and Adjusting Plate
25. Water Inlet Pipe
26. Generator Bracket
27. Oil Cooler with Oil Filter
28. Exhaust Manifold
027R100007
037RY00001
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ISUZU KB P190 2007
Page 923 of 6020
6A – 118 ENGINE MECHANICAL
INSTALLATION
EXTERNAL PARTS
RTW 36AMF000701
Installation Steps
1.
Exhaust Manifold 18. Engine Mounting Bracket and
2.
Oil Cooler with Oil Filter Foot
3. Generator Bracket 19. Intake Manifold
4. W ater Inlet Pipe 20. Power Steering Oil Pump
5.
Generator and Adjusting Plate Bracket
6.
Vacuum Pump Oil Return Hose 21. Fuel Injection Pipe with Clip
7.
Compressor Bracket 22. Fuel Filter Bracket (Except
EURO III)
8. Turbocharger 23. Fuel Filter Assembly (Except
EURO III)
9. Catalytic Converter 24. Oil Level Gauge
10. Heat Protector 25. EGR Valve
11. Cooling Fan Pulley 26-1. EGR Pipe
12. Oil Cooler W ater Pipe 26-2. EGR Cooler (EURO III model
only)
13. Fuel Leak Off Pipe 27. Intake Pipe and Throttle Body
(4JA1TC/4JH1TC only)
14. Oil Pressure W arning Switch 28. Clutch Assembly or Flex Plate
15. Starter Motor
16. Injection Pump
17. Injection Pump Cover
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ISUZU KB P190 2007
Page 929 of 6020

6A – 124 ENGINE MECHANICAL
20. Power Steering Oil Pump Bracket
Oil Pump Braket Nut and Bolt Torque N·m(kg·m/Ib ft)
1M10 ×1.25
37 (3.8/28)
2
3M8×1.25
18 (1.8/13) (Bolt ID:8)
040R300005
21. Fuel Injection Pipe with Clip
1) Temporarily tighten the injection pipe sleeve nut.
2) Set the clip in the illustrated position. Note:
Make absolutely sure that the clip is correctly
positioned.
An improperly positioned clip will result in injection
pipe breakage and fuel pulsing noise.
3) Tighten the injection pipe sleeve nut to the specified torque.
Torque
Injection Pump Side (4JA1TC/4JH1TC) N·m(kg·m/Ib ft)
40 (4.1/30)
Injection Pipe Sleeve Nuts N·m(kg·m/Ib ft)
29 (3.0/22)
Injection Pipe Clip Nuts N·m(kg·m/Ib ft)
8 (0.8/6)
22. Fuel Filter Bracket (Except EURO III model)
Install the fuel filter bracket and tighten fixing bolts to the
specified torque.
Fuel Filter Bracket Bolt Torque N·m(kg·m/Ib ft)
21 (2.1/15)
23. Fuel Filter Assembly (Except EURO III model)
Install the fuel filter assembly and tighten fixing bolts to the
specified torque.
Fuel Filter Assembly Bolt Torque N·m(kg·m/Ib ft)
21 (2.1/15)
24. Oil Level Gauge
Install the oil level gauge and tighten fixing bolts to the
specified torque.
Oil Level Gauge Bolt Torque N·m(kg·m/Ib ft)
M8 19 (1.9/14)
M6 8 (0.8/6)
431RY00013
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ISUZU KB P190 2007