Isuzu N-Series. Manual - part 354

6A3-68 ENGINE (4HF1 / 4HF1-2 / 4HE1-TC / 4HG1 / 4HG1-T)

2. Oil Filter

Tighten:
Oil filter cover bolt to 48 N

⋅m (4.9 kg⋅m/35 lb⋅ft)

3. Oil Pressure Switch

1) Apply the recommended liquid gasket (LOC-

TITE 262) or its equivalent to at least 2 — 3 of
the oil pressure switch threaded areas.

2) Install the oil pressure switch to the oil filter cov-

er.

Tighten:
Oil pressure switch to 13 N

⋅m (1.3 kg⋅m/113 lb⋅in)

4. Oil Pipe

Tighten:
Oil pipe joint bolt to 17 N

⋅m (1.7 kg⋅m/12 lb⋅ft)

• Connect battery ground cable.
• Start engine and check for oil leakage carefully.

N6A0517E

N6A0518E

N6A0519E

ENGINE (4HF1 / 4HF1-2 / 4HE1-TC / 4HG1 / 4HG1-T) 6A3-69

OIL FILTER CARTRIDGE

Component

Removal

Preparation

• Disconnect battery ground cable.
• Place a receptacle beneath the oil filter to contain

the drained oil.

1. Oil Filter Cartridge

Use an oil filter wrench to remove the oil filter car-
tridge.
Oil Filter Wrench: 1-8522-1097-0
5-8840-2094-0 (4WD model)

Installation

1. Oil Filter Cartridge

1) Clean the oil filter fitting face.
2) Apply a light coat of engine oil to the O-ring.
3) Turn in the new oil filter until the filter O-ring is

fitted against the sealing face.

4) Use an oil filter wrench to install the new oil filter

cartridge.
Oil Filter Wrench: 1-8522-1097-0
5-8840-2094-0 (4WD model)

Tighten:
Oil filter to 64 N

⋅m (6.5 kg⋅m/47 lb⋅ft)

Legend

1. Oil filter cartridge

N6A0520E

N6A0521E

N6A0521E

6A3-70 ENGINE (4HF1 / 4HF1-2 / 4HE1-TC / 4HG1 / 4HG1-T)

OIL COOLER

Component

Legend

1. Vacuum hose

14. PCV hose

2. Oil level guide tube

15. Water bypass hose

3. Intake air duct

16. Injection pipe

4. Engine stop cable

17. Injection pump assembly

5. Accelerator control cable

18. Injection pump rubber spacer

6. Engine control cable

19. A/C drive belt (If equipped with A/C)

7. Engine control lever assembly

20. Idle pulley bracket (If equipped with A/C)

8. Oil pipe

21. Heater hose

9. Fuel return hose

22. Radiator lower hose

10. Fuel feed hose

23. Heater pipe

11. Nozzle cover

24. Water suction pipe

12. Leak off pipe

25. Oil cooler assembly

13. Fuel pipe

26. O-ring

N6A0523E

ENGINE (4HF1 / 4HF1-2 / 4HE1-TC / 4HG1 / 4HG1-T) 6A3-71

Removal

Preparation

• Disconnect the battery ground cable
• Drain coolant

1. Vacuum Hose
2. Oil Level Guide Tube

Remove the guide tube fixing bolt and pull out the
guide tube.

3. Intake Air Duct
4. Engine Stop Cable

Loosen the locking nut at the bracket and discon-
nect engine stop cable from injection pump stop le-
ver.

5. Accelerator Control Cable

Loosen the locking nut at the bracket and discon-
nect accelerator control cable from injection pump
control lever.

N6A0524E

N6A0525E