T O 35C2-3-442-2
P-8-627-34
TM 5-6115-457-34
TM-07464A-35
8-184. INSPECTION.
8-185. REPAIR.
a. Refer to table 1-1 and, using a
CAUTION
suitable micrometer, check for excessive
wear as follows:
Do not remove any more material
1. Rocker arm bearing (26 and 31,
than is required to remove dis-
coloration and small nicks.
figure 8-53) bore.
NOTE
2. Shaft (39) diameter.
The contact surfaces on adjustment
3. Clearance between bearings and
screw (18) and lifter end of push
shaft.
rod (19) may be noted to have a flat
surface on the ball end. This flat
4. If allowable limits are not met,
surface is allowed by the manu-
replace part.
facturer during production and is
b. Inspect ball end of adjusting screw
not to be considered a worn part.
(18) and valve contact surface of rocker
The adjusting screw ball end is
arm assembly (25) for nicks, discoloration,
allowed a 0.19 inch diameter flat,
and uneven wear.
and the lifter end of the push rod
is allowed a 0.125 inch diameter
c. Inspect rocker arm assembly (30)
flat .
and shaft (35) to ensure that oil passages
a. Clean up contact surfaces on adjust-
are open.
ing screw (18, figure 8-53) and rocker arm
d. Check clearance between lifter (20)
assembly (25), using a hone.
and bore in block. Maximum allowable
WARNING
clearance is 0.012 inch. If clearance is
exceeded, replace lifter.
Cleaning Solvents are flammable and
moderately toxic to skin, eyes and
e. Inspect push rod (19) for straight-
respiratory tract. Eye and skin
ness. Rotate push rod on its ball center.
protection required. Good general
Maximum allowable runout is 0.020 inch
ventilation is normally adequate.
T.I.R. If limit is exceeded, replace push
b, Clean out oil passages in rocker
rod. Do not attempt to straighten push
assembly and shaft using a thin wire.
rod.
Flush with an approved cleaning solvent.
8-186. REASSEMBLY.
f. Inspect spring for cracks or distor-
Refer to figure 8-53 and reassem-
tion. If defective, replace spring.
ble the valve cover and valve mechanism
group in the reverse order of index num-
g. Inspect rocker arm contact surfaces
bers assigned. Pay particular attention to
for excessive wear. If defective, replace
the following:
rocker arm.
CAUTION
When installing bearing (26 and 31)
h. Inspect components for cracks,
into arm assembly bores (25 and 30),
breaks, and other damage.
ensure that hole in bearing aligns
with hole in bore arm.
i.
Discard seal and gaskets.
8-112
Change 8
