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5. Push and twist the valve stem oil seal into position
on the valve guide until the seal positively locks on
the guide using the EN 46116.
6. Lubricate the valve stem and valve guide ID with
clean engine oil GM P/N 12345501 (Canadian P/N
992704) or equivalent.
NOTE
The valve stem oil seal must not come loose
from the valve guide when the valve is
installed.
7. Insert the valve into the valve guide until it bottoms
on the valve seat.
8. Position the valve spring on the spring seat.
9. Place the valve spring retainer onto the valve spring.
WARNING
!
Compressed valve springs have high tension
against the valve spring compressor. Valve
springs that are not properly compressed by
or released from the valve spring
compressor can be ejected from the valve
spring compressor with intense force. Use
care when compressing or releasing the
valve spring with the valve spring
compressor and when removing or installing
the valve stem keys. Failing to use care may
cause personal injury.
CAUTION
!
Do not compress the valve springs less than
24.0 mm (0.943 in). Contact between the valve
spring retainer and the valve stem oil seal
can cause potential valve stem oil seal
damage.
10. Compress the valve spring using the J 8062 and the
EN 46119.
Engine Mechanical:
1D-187
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