CYLINDER HEAD - CONTINUED
REPAIR/ASSEMBLY - CONTINUED
62. Cylinder head (1)
Using plastic-faced hammer, tap stem
end of valve and retest by repeating
steps 60 and 61.
If valve seating Is satisfactory,
proceed to next step.
Check for leaking connections in tester
by placing vacuum cup against a clean
window glass or any smooth flat surface.
Repair any leaks In test equipment.
Check valve and seat area to be sure
they are free of dirt particles, Retest
If valve seating Is unsatisfactory,
regrind seat and reface valve. See
steps 32, 33, and 34 and steps 49,
50, and 51.
It is possible to mistake leakage around valve seat insert for valve seat leakage. If this
type of leak is suspected, proceed with the following step.
63. Cylinder head (1)
Apply extreme-pressure grease around
outside edge of valve seat insert to make
a grease seal.
Perform vacuum test and inspect grease
seal for a break indicating air leakage
between wall of counterbore and valve
Restake valve seat Insert. See
Vacuum test and recheck for air leakage
around valve seat insert.
If air leakage Is present, see steps
26 thru 31. Replace valve seat Insert.