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 TM5-241O-237-34
3-9. CYLINDER HEAD ASSEMBLY AND SPACER PLATE - REPLACE/REPAIR (Cont'd)
(6) Visually inspect valve springs
for nicks, deep scratches, rust
deposits, notches at the end of
the spring, and for wear between
coils, on the spring sides, and
on the end. Replace valve spring
if any of these conditions exist.
(7) Check spring force using a valve
spring tester. See Table 3-2
for valve spring specifications
and measurements.
(8) Inspect rotocoil for deep
grooves or notches. Also check
that the inner part of the
rotocoil turns smoothly.
Replace rotocoil assembly if
any damage or defect is noted.
(9) Inspect locks for heavy wear,
cracks, and/or gouges. Replace
damaged locks.
(lo) Visually inspect valve guides for
looseness and for any signs of
damage. Replace a loose or
damaged valve guide.
(11) Measure both ends of each valve
guide. If valve guide bore
exceeds 0.3772 in., replace valve
guide.
(12) Visually inspect valve seat
insert for any signs of excessive
wear, burned condition, or other
damage. Replace a damaged valve
seat insert.
(13) Refer to Table 3-2 and measure
angle of face of valve seat
insert, maximum permissible
width of valve seat, and outside
diameter of the face of the valve
seat insert. If measurements are
not within the limits specified,
replace the valve seat insert.
3-36
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