Split Collar; Intake And Exhaust Valve - Isuzu A-4JA1 Workshop Manual

ENGINE ASSEMBLY ( 1 )
42
Important Operations

1. Split Collar

1) Place the cylinder head on a flat wooden
surface.
2) Use the spring compressor to remove the split
collar.
Do not allow the valve to fall from the cylinder
head.
Spring Compressor: 9-8523-1423-0

4. Intake and Exhaust Valve

If the intake and exhaust valves are to be reinstalled,
mark their installation positions by tagging each
valve with the cylinder number from which it was
removed.
If there is excessive valve wear or damage, the valve
must be replaced.
Refer to Page 50 of "Inspection and Repair" for the
valve and valve seat insert procedure.
Note:
If there is excessive valve guide wear or damage, the
valve guide must be replaced.
Refer to Page 49 of "Inspection and Repair" for the valve
guide replacement procedure.
The valve and the valve guides must be replaced as a
set. Never replace only one or the other.