Isuzu KB P190. Manual — part 232

ENGINE MECHANICAL 6A – 123

15. Starter Motor

Tighten the starter motor bolts to the specified torque.

Starter Motor Bolt Torque

N·m(kg·m/Ib ft)

85 (8.7/63)

16. Injection Pump

17. Injection Pump Cover (4JA1TC/4JH1TC only)

18. Engine Foot

Install the engine foot to the cylinder body and tighten the
bracket bolts to the specified torque.

Engine Foot Bolt Torque

N·m(kg·m/Ib ft)

Right Side

M10×1.25

40 (4.1/30)

M10×1.25

40 (4.1/30)

Left Side

M14×1.50

127 (13/93)

4JA1L, 4JH1TC

022R300003

4JA1TC

RTW46ASH002601

RTW36ASH001001

19. Intake Manifold

1) Install the manifold gasket to the intake manifold.

2) Connect the intake rubber hose to the intake duct.

3) Tighten the intake manifold bolts and the flange nuts

to the specified torque.

Intake Manifold Bolt Torque

N·m(kg·m/Ib ft)

19 (1.9/14)

Intake Manifold Flange Nut Torque

N·m(kg·m/Ib ft)

24 (2.4/18)

4) Connect the PCV hose to the cylinder head cover.

5) Install the fan drive belt and adjust the belt tension

referring SERVICING of this section

6A – 124 ENGINE MECHANICAL

20. Power Steering Oil Pump Bracket

Oil Pump Braket Nut and Bolt Torque

N·m(kg·m/Ib ft)

1

M10×1.25

37 (3.8/28)

2

3

M8×1.25

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

ENGINE MECHANICAL 6A – 125

25. EGR Valve

Install the EGR valve assembly to the intake minifold with
the two gasket.

Tighten the four nuts to the specified torque.

Nut Tolque

N·m(kg·m/Ib ft)

31 (3.1/23)

Connector the vacuum hose.

025R100008

RTW36ASH000301

26-1. EGR Pipe

Install the EGR valve adapter with the gasket to the EGR
valve assembly and install the EGR pipe with the gasket.

Tighten fixing bolts and nuts to the specified torque.

EGR Valve Adapter Bolts

N·m(kg·m/Ib ft)

24 (2.4/17)

EGR Pipe Bolts and Nuts

N·m(kg·m/Ib ft)

27 (2.7/20)

RTW48ASH001801

26-2. EGR Cooler (EURO III model only)

Install the EGR valve adapter with the gasket to the EGR
valve assembly and install the EGR pipe with the gasket.

Tighten fixing bolts and nuts to the specified torque.

EGR Valve Adapter Bolts

N·m(kg·m/Ib ft)

24 (2.4/17)

EGR Pipe Bolts and Nuts

N·m(kg·m/Ib ft)

27 (2.7/20)

27. Intake Pipe and Throttle Body (4JA1TC/4JH1TC only)

Install the throttle body with the gasket to the intake
manifold and install the intake duct with the gasket.

Tighten the two bolts and the two nuts to the specified
torque.

Throttle Body and Intake Duct

N·m(kg·m/Ib ft)

Bolt 19

(1.9/14)

Nut 24

(2.4/17)

RTW36ASH000201

28. Clutch Assembly or Flex Plate

6A – 126 ENGINE MECHANICAL

LUBRICATION SYSTEM

LUBRICATING OIL FLOW

1. Oil Pump Relief Valve Operating Pressure: 6.2 - 7.8 kg/cm

2

(608 – 764 kPa)

2. Regulating Valve Operating Pressure: 5.7 - 6.3 kg/cm

2

(558.6 - 617.4 kPa)

3. Oil Cooler Relief Valve Opening Pressure: 2.8 - 3.4 kg/cm

2

(270 – 330 kPa)

4. Oil Filter Relief Valve Opening Pressure: 0.8 - 1.2 kg/cm

2

(78.4 - 117.6 kPa)

5. Oil Pressure Switch Operating Pressure: 0.3 - 0.5 kg/cm

2

(29.4 - 49.0 kPa)

6. Regulating Valve: 1.8 - 2.2 kg/cm

2

(176 – 216 kPa)

The 4J series engine has a full flow type lubricating system.

Lubricating oil is pumped from the oil pump to the cylinder body oil gallery through the oil cooler and the oil filter. It is
then delivered to the vital parts of the engine from the cylinder body oil gallery.

Oiling jets installed on the cylinder body spray engine oil to the piston backside faces to achieve maximum piston
cooling effect.