Isuzu engine C22NE / 22LE / 20LE. Manual - part 15

6A-42 ENGINE MECHANICAL (C22NE, 22LE, 20LE)

Removal

6.

Remove the camshaft housing cover and camshaft pulley
by counter-holding at the hex head of camshaft.

Removal

7.

Remove the fastening bolts from camshaft housing.

Removal

8.

Remove the exhaust pipe from exhaust manifold.

9.

Loosen the cylinder head bolts spirally from the outside
inwards (first 1/4, then 1/2 revolution).

Removal

1.

Remove the camshaft housing from cylinder head.

2.

Remove the cam followers, thrust pieces and hydraulic
valve lifters.

Note the allocation.

3.

Remove the cylinder head.

Clean

Sealing surfaces, bores and threads of cylinder head bolts.

Inspection

Check cylinder head and cylinder block for plane Surfface-see
operations “Cylinder Head. Check for Plane Surface” and
“Cylinder Block, Check for Plane Surface.”

ENGINE MECHANICAL (C22NE, 22LE, 20LE) 6A-43

Installation

1.

Install the cylinder head gasket.

Mark "OBEN/TOP" on top and turn it towards timing side
of engine.

2.

Place cylinder head on cylinder block.

1
2
3

Installation

1.

Insert the hydraulic valve lifters (3), thrust pieces (2) and
cam followers (1) with MoS2 paste.

Note allocation.

2.

Apply a bead of Sealing Compound TB1207C to sealing
surface of cylinder head.

3.

Install the camshaft housing on cylinder head.

Torque-Angle Method

Cylinder head and camshaft housing with new cylinder head
bolts to cylinder block.

Cylinder head bolts in sequence shown.

Installation

1.

Install the rear toothed belt cover to camshaft housing.

2.

Install the camshaft pulley to camshaft.

3.

Install the camshaft housing cover to housing.

Installation

1.

Install the toothed belt on camshaft pulley.

See operation "Timing  Adjust".

2.

Install the front toothed belt cover.

6A-44 ENGINE MECHANICAL (C22NE, 22LE, 20LE)

Installation

1.

Install the fastening bolts.

2.

Loosen the lower alternator fastening bolt.

3.

Install the alternator, power steering and V-belts.

Cylinder Head, Disassemble and Assemble

Removal

1.

Remove the hydraulic valve lifters.

Lay aside in installation positions.

2.

Remove the spark plugs, exhaust manifold and intake
manifold from cylinder head.

Removal

1.

Mark valves.

2.

Remove the tension valve springs with 5-8840-2594-0
(1).

3.

Remove valve keepers, valve spring cap and valve
spring.

Removal

1.

Remove the valve and valve stem seal.

2.

Remove the valve spacer ring (1-exhaust) and valve
spring seat (2-intake).

3.

Remove valve from cylinder head.

Clean

Sealing surfaces.

ENGINE MECHANICAL (C22NE, 22LE, 20LE) 6A-45

Inspection

Sealing surfaces for plane surface, guides, sliding and bearing
points for wear-see operation “Cylinder Head. Overhaul”.

Installation

1.

Coat the valves with engine oil and insert in cylinder
head.

2.

Install the valve spacer ring or valve rotator(exhaust) and
valve spring seal(intake).

3.

Push the accompanying assembly sleeve onto valve
stem and coat with engine oil.

4.

Insert a new valve stem seal with 5-8840-2601-0 (1).

5.

Drive the valve stem seal carefully in to stop with light
hammer blow.

Installation

1.

Install the valve springs and valve spring caps.

2.

Install the tension valve springs with 5-8840-2594-0 (1),
valve keeper.

Important!

Note markings made on valves.

Tighten (Torque)

Exhaust manifold and intake manifold with new gaskets to
cylinder head.

Thermostat housing with new seal ring to cylinder head:

Tighten (Torque)

Spark plugs with spark plug wrench to cylinder head.

Installation

1.

Coat hydraulic valves lifters (1) with oil.

2.

Insert them in cylinder head.

Note installation position.