Isuzu KB P190. Service manual — part 227

ENGINE MECHANICAL 6A – 103

Reassembly Steps-3

27.

Cylinder head gasket

31.

Thermostat housing with thermo
switch

28.

Cylinder head

32.

Water by-pass hose

29.

Push rod

33.

Injection nozzle and bracket

30.

Rocker arm shaft and rocker
arm

34.

Cylinder head cover with gasket

011R300002

6A – 104 ENGINE MECHANICAL

Reassembly

1. Cylinder

Body

Use compressed air to thoroughly clean the inside and
outside surfaces of the cylinder body, the oil holes, and the
water jackets.

2. Tappet

1. Apply a coat of engine oil to the tappet and the

cylinder body tappet insert holes.

2. Locate the position mark applied at disassembly (if

the tappet is to be reused).

NOTE:

The tappet must be installed before the camshaft
installation.

3. Crankshaft Upper Bearing

The crankshaft upper bearings have an oil hole and an oil
groove. The lower bearings do not.

1. Carefully wipe any foreign material from the upper

bearing.

NOTE:

Do not apply engine oil to the bearing back faces and
the cylinder body bearing fitting surfaces.

2. Locate the position mark applied at disassembly if the

removed upper bearings are to be reused.

4. Crankshaft

Apply an ample coat of engine oil to the crankshaft journals
and the crankshaft bearing surfaces before installing the
crankshaft.

015R100004

015R100003

014LX088

015LX125

ENGINE MECHANICAL 6A – 105

5. Crankshaft Thrust Bearing

Apply an ample coat of engine oil to the thrust bearings
before installation.

Install the thrust bearings to the crankshaft center journal.

The thrust bearing oil grooves must be facing the sliding
faces.

6. Crankshaft Bearing Cap With Lower Bearing

Before the crankshaft bearing installation, select the
appropriate bearings in accordance with the description in

CRANK BEARING SELECTION of INSPECTION AND
REPAIR.

1. Apply the recommended liquid gasket or its equivalent

to the No. 5 crankshaft bearing cap cylinder body fitting
surfaces at the points shown in the illustration.

NOTE:

Be sure that the bearing cap fitting surface is
completely free of oil before applying the liquid
gasket. Three bond 1207B Do not allow the liquid
gasket to obstruct the cylinder thread holes and
bearings.

ThreeBond 1207B is a fast-drying liquid gasket.

Tighten the bearing caps immediately after applying
the gasket.

2. Install the bearing caps with the bearing cap head

arrow mark facing the front of the engine.The bearing
cap numbers must be facing up.

3. Apply engine oil to the crankshaft bearing cap bolts.

4. Tighten the crankshaft bearing cap bolts to the

specified torque a little at time in the sequence shown
in the illustration.

Crankshaft Bearing Cap Torque

N·m(kg·m/lbft)

167 (17/123)

5. Check to see the crankshaft turns smoothly by rotating

it manually.

015LX115

015LX127

015LX128

015LX129

6A – 106 ENGINE MECHANICAL

7. Camshaft

1. Apply a coat of engine oil to the camshaft and the

camshaft bearings.

2. Install the camshaft to the cylinder body.

Take care not to damage the camshaft bearings.

8. Timing Gear Case

Tighten the timing gear case with timing gear case gasket
to the specified torque.

Timing Gear Case Bolt Torque

N·m(kg·m/lbft)

19 (1.9/14)

9. Camshaft Thrust Plate

Install the thrust plate to the cylinder body and tighten the
thrust plate bolts to the specified torque.

Thrust Plate Bolt Torque

N·m(kg·m/lbft)

19 (1.9/14)

RTW36ASH000901

10. Camshaft Timing Gear

1. Install the camshaft timing gear to the camshaft. The

timing gear mark must be facing outward.

2. Tighten the timing gear to the specified torque.

Timing Gear Bolt Torque

N·m(kg·m/lbft)

110 (11.2/82)

014RY00019

020R300003

020RY00032