Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 1212

6A–45

ENGINE MECHANICAL (Y22SE 2.2L)

Reassembly

1. Valves, valve stem seals. Refer to Valve Spring,

Valve, Valve Guide in this section.

2. Valve seat, valve spring. Refer to Valve Spring, Valve,

Valve Guide in this section.

3. Install tappet (HLA).
4. Cylinder head with new cylinder head bolts to cylinder

block.
Tighten the bolts in 4 steps.

1st step: 25 N·m (18 lb ft)

2nd step: 90

°

3rd step: 90

°

4th step: 90

°

011RW014

5. Camshaft in cylinder head. Refer to Camshaft in this

section.

6. Camshaft pulley. Refer to Camshaft in this section.

6A–46

ENGINE MECHANICAL (Y22SE 2.2L)

Valve Spring, Valve, Valve Guide

Valve Spring, Valve, Valve Guide and Associated Parts

011R100013

Legend

(1) Camshaft Pulley Fixing Bolts
(2) Camshaft Pulley
(3) Camshaft Bracket Fixing Bolt
(4) Camshaft Assembly Intake
(5) Camshaft Assembly Exhaust
(6) Cylinder Head Bolt
(7) Cylinder Head

(8) Tappet (HLA = Hydraulic Lash Adjuster)
(9) Split Collar

(10) Spring Upper Seat

(11) Valve Spring

(12) Oil Seal
(13) Spring Lower Seat
(14) Valve Guide
(15) Valve

6A–47

ENGINE MECHANICAL (Y22SE 2.2L)

Disassembly

1. Remove camshaft pulley (1), (2).
2. Remove camshaft assembly (Intake) (3), (4).
3. Remove camshaft assembly (Exhaust side) (5).
4. Remove cylinder head (6), (7).
5. Remove tappet (8).
6. Use J–8062 valve spring compressor and J–42619

adapter to remove split collar (9).

011RW014

7. Remove spring upper seat and valve spring (10), (11).
8. Valve, valve guide – use commercially available

remover pliers.
Valve spring lower seat from cylinder head.

011RW013

Inspection and Repair

1. Use a internal micrometer to measure the diameter

valve guide.

Valve stem play

Intake : 0.03 to 0.057 mm (0.0012 to 0.0022 in)

Exhaust : 0.04 to 0.067 mm (0.0016 to 0.0026 in)

011RW020

Valve Guide

CAUTION: Taking care not to damage the valve seat
contact surface, when removing carbon adhering to
the valve head. Carefully inspect the valve stem for
scratching or abnormal wear. If these conditions are
present, the valve and the valve guide must be
replaced as a set.

Valve Seat

Valve seat width in cylinder head

Intake: 1.0 to 1.5 mm (0.039 to 0.0585 in)

Exhaust: 1.7 to 2.2 mm (0.0663 to 0.0858 in)

Valve Seat Insert Correction

Remove the carbon from the valve seat insert surface.

6A–48

ENGINE MECHANICAL (Y22SE 2.2L)

Valve Seat Insert Replacement

1. Arc weld the rod at several points. Be careful not to

damage the aluminum section.

2. Allow the rod to cool for a few minutes. This will cause

the valve seat to shrink.

3. Strike the rod and pull it out.

014RS015

4. Carefully clean the valve seat press–fit section on the

cylinder head side.

5. Heat the press–fit section with steam or some other

means to cause expansion. Cool the valve seat with
dry ice or some other means.

6. Insert the press–fit section into the valve seat

horizontally.

7. Lap the valve and the seat.

Reassembly

1. Install oil seal (3) and spring lower seat (2). Using oil

seal replacer J–42622, drive in a new oil seal.

014RS019

2. Install valve to valve guide. Before install valve apply

engine oil to the outside of the valve stem.

3. Install lower valve spring seat, valve spring and upper

valve spring seat then put split collars on the upper
spring seat, using J–8062 valve spring compressor
for install the split collars.

011RW014

4. Install tappet. (HLA)

Apply engine oil around the outside of tappets.
(HLA = Hydraulic Lash Adjuster)

5. Install camshaft assembly.

D

Refer to installation procedure for Camshaft in this
manual.