Isuzu engine C22NE / 22LE / 20LE. Service manual - part 14

6A-38 ENGINE MECHANICAL (C22NE, 22LE, 20LE)

Clean

All sealing surfaces, drill holes in cylinder head bolts.

Check cylinder block and cylinder head for plane surface

according to the corresponding operations.

Installation

1.

Install cylinder head sealing with marking "OBEN/TOP"
facing upwards and to right side of engine.

2.

Install cylinder head on cylinder block.

3.

Install hydraulic valve lash adjuster, pressure parts and
rocker arm - molybdenum disulphate paste.

4.

Install camshaft housing-Sealing Compound TB-1207C
or equivalent.

Important!

Use new cylinder head bolts.

Screw in bolts until they rest on cover.

Torque - Angle Method

Cylinder head to cylinder block - 25 N

⋅

m (2.5 kgf

⋅

m)

Further turn angle 90

°

+90

°

+ 90

°

.

Tighten cylinder head bolts from inside outwards. In four

stages in a spiral pattern.

5.

Install rear toothed belt cover onto camshaft housing.

6.

Install toothed belt and apply tension according to the
corresponding operation.

Tighten (Torque)

Camshaft timing gear to camshaft - 45 N

⋅

m (4.6 kgf

⋅

m)

7.

Install camshaft housing cover and front toothed belt
cover.

8.

Install cable connections, all hoses and lines onto
cylinder head.

9.

Adjust accelerator cable for free of play.

10.

Install V-belt according to the corresponding operation.

11.

Install air intake hose.

12.

Install front exhaust pipe.

13.

Install ground cable onto battery.

14.

Fill up cooling system and bleed according to the
corresponding operation.

ENGINE MECHANICAL (C22NE, 22LE, 20LE) 6A-39

Hydraulic Valve Lifters, Replace

Removal

1.

Remove the spark plug connectors and spark plugs.

2.

Remove the camshaft housing cover.

Removal

3.

Turn the crankshaft at fastening bolt of toothed belt drive
gear in the direction of the engine rotation until the cam
of hydraulic valve lifter being replaced stands vertically.

Removal

4.

Apply 5-8840-0457-0 to the camshaft housing, valve
spring cap and tension valve spring.

Removal

5.

Remove the cam follower from camshaft housing.

Note thrust pieces.

6.

Remove hydraulic valve lifter from camshaft housing.

Camshaft Housing, Replace

Removal

Cylinder head-see operation “Cylinder Head. Remove and

Install”.

6A-40 ENGINE MECHANICAL (C22NE, 22LE, 20LE)

Inspection

All parts, if necessary replace.

When replacing camshaft, always replace all cam followers.

Installation

Insert hydraulic valve lifter (1) in camshaft housing.

Coat sliding surfaces of rocker arm with Mcs, Paste and insert

in camshaft housing.

Adjust

Adjustment of the hydraulic valve liters is not required.

Pretension is provided by the design.

Installation

1.

Remove 5-8840-0457-0 and install the camshaft housing
cover.

2.

Insert the spark plug connectors.

Tighten (Torque)

Guide plate to camshaft housing.

Insert camshaft with MoS

2

 paste.

Installation

1.

Install the front seal ring in camshaft housing with
5-8840-0451-0.

2.

Install the camshaft housing rear cover.

3.

Install the cylinder head.

ENGINE MECHANICAL (C22NE, 22LE, 20LE) 6A-41

Camshaft Housing, Check for Plane Surface

Clean

Sealing surfaces.

Inspection

Check length and width of sealing surface for deformation and
diagnosis for warpage and use straight edge feeler gauge.

Measure

Height of camshaft housing (sealing surface to sealing
surface).
Dimension I: (74.0 mm)

Cylinder Head, Removal and Installation

Important

Only remove cylinder head with engine cold (room
temperature).

Removal

1.

Remove the alternator, power steering and V-belts.

Removal

2.

Loosen the fastening bolts from alternator.

3.

Loosen the lower alternator fastening bolt by swinging the
alternator to the rear.

Removal

4.

Remove the front toothed belt cover.

5.

Remove the toothed belt from camshaft pulley.

See operation "Timing Check and Adjust".