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.