Isuzu KB P190. Manual — part 230

ENGINE MECHANICAL 6A – 115

RTW46ASH002201

4JA1T(L):

4. Tighten the injection pump bolts to the specified torque.

5. Install the injection pump bracket (4) and the bracket

bolts (5) and (6) to the cylinder body. Temporarily tighten

the bracket bolts.

6. Tighten the bracket bolts (5) to the specified torque.

7. Tighten the bracket bolts (6) to the specified torque.

Injection pump Bracket Bolt Torque (6)

N·m(kg·m/lbft)

19 (1.9/14)

Injection pump Bracket Bolt Torque (5)

N·m(kg·m/lbft)

40 (4.1/30)

030RY00007

24. Water Pump

1. Apply the recommended liquid gasket or its equivalent

to the water pump at the position shown in the
illustration.

Do not apply an excessive amount of liquid gasket.

2. Tighten the water pump bolts to the specified torque.

Water Pump Bolt Torque

N·m(kg·m/lbft)

20 (2.0/14)

25.Timing Gear Case Cover

1. Align the gear case with the timing gear case knock pin

and then install the timing gear case cover.

2. Tighten the gear case cover bolts to the specified

torque.

Gear Case Cover Bolt Torque

N·m(kg·m/lbft)

M8 19

(1.9/14)

M12 76

(7.7/56)

26. Crankshaft Damper Pulley

Tighten the crankshaft damper pulley bolt to the specified
torque.

Note:

Hold the flywheel ring gear stationary to prevent the
crankshaft from turning when tightening the damper
pulley bolt.

Crankshaft Damper Pulley Bolt Torque

N·m(kg·m/lbft)

206 (21/152)

Take care not to damage the crankshaft damper pulley
boss.

014R100014

020R300004

6A – 116 ENGINE MECHANICAL

27. Cylinder Head Gasket

The cylinder head gasket "TOP" mark must be facing up.

NOTE:

Before the gasket installation, measure the piston
head projection and select the appropriate head
gasket.

Refer to "INSPECTION AND REPAIR", "Cylinder Head
Gasket Selection".

28. Cylinder Head

1. Align the cylinder body dowels and the cylinder head

dowel holes.
Carefully place the cylinder head on the cylinder head
gasket.

2. Apply a coat of engine oil to the cylinder head bolt

threads and setting faces.

3. Tighten the cylinder head bolts in three steps of anglar

tightening methed.

Follow the numerical sequence shown in the
illustration.

Cylinder Head Bolt Torque

N·m(kg·m/lbft)

1st step

49 (5.0/36)

2nd step

60

° - 75°

3rd step

60

° - 75°

30. Rocker Arm Shaft and Rocker Arm

Tighten the rocker arm shaft bracket bolts in the numerical
order shown in the illustration.

Rocker Arm Shaft Braket Bolt Torque

N·m(kg·m/lbft)

54 (5.5/40)

31. Thermostat Housing

1. Install the thermostat housing.

2. Tighten the thermostat housing bolts to the specified

torque.

Thermostat Housing Bolt Torque

N·m(kg·m/lbft)

19 (1.9/14)

014LX083

011LX073

031R300002

ENGINE MECHANICAL 6A – 117

RTW46ASH001201

33. Injection Nozzle Holder

1. Install the injection nozzle gasket and the O-ring to the

injection nozzle holder.
Be sure that the O-ring fits snugly in the injection
nozzle groove.

2. Install the nozzle holder toghther with the nozzle holder

bracket to the cylinder head.

3. Tighten the nozzle holder bracket bolt to the specified

torque.

Injection Nozzle Holder Bracket Bolt
Torque

N·m(kg·m/lbft)

37 (3.8/28)

Note on Valve Clearance Adjustment

Valve clearances must be adjusted before the cylinder
head cover is reinstalled.Refer to "Valve Clearance
Adjustment" in the "Servicing" Section of this manual.

Valve Clearance (At Cold)

mm(in)

0.4 (0.0157)

RTW46ASH001101

34. Cylinder Head Cover

1. Apply engine oil to the rocker arm and the valve spring.

2. Install the cylinder head cover gasket to the head

cover. Check to see that the head cover gasket has no
loose areas.

3. Tighten the cylinder head cover nuts in the numerical

order shown in the illustration.

Cylinder Head Cover Bolt Torque

N·m(kg·m/lbft)

13 (1.3/9.4)

4. Connect the positive crankcase ventilation (PCV) hose

to the cylinder head cover.

014RY00015

6A – 118 ENGINE MECHANICAL

INSTALLATION

EXTERNAL PARTS

RTW36AMF000701

Installation Steps

1.

Exhaust Manifold

18.

Engine Mounting Bracket and

2.

Oil Cooler with Oil Filter

Foot

3.

Generator Bracket

19.

Intake Manifold

4.

Water 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 Water 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 Warning Switch

28.

Clutch Assembly or Flex Plate

15. Starter

Motor

16. Injection

Pump

17.

Injection Pump Cover