TM 5-4310-368-14
q. Camshaft
(1) Push eight valve tappets (Figure 6-19) up against underside of crankcase (Figure 6-16). Secure in place with
elastic bands.
(2) Remove camshaft (Figure 6-16).
r.
Valve Tappets. (Figure 6-19)
(1) Remove elastic bands installed in paragraph q.
(2) Remove eight valve tappets.
6-6.
CLEANING
WARNING
Dry cleaning solvent, P-D-680, used to clean parts is potentially dangerous to personnel
and property. Avoid repeated and prolonged skin contact. Do not use near open flame
or excessive heat. Flash point of solvent is 100 (38 ) - 138 (59 ).
F
C
F
C
a. Clean all parts with dry cleaning solvent. Dry thoroughly.
b. Remove all carbon and lead deposits from cylinder heads.
c.
Remove all carbon and lead deposits from pistons.
d. Blow out all oil passages. Use small bore brush where necessary to thoroughly clean oil passages.
6-7.
INSPECTION
a. Inspect all parts for signs of abnormal or excessive wear or damage.
b. Using one inch to two inch range outside micrometer, measure the crankshaft journals as shown in Figure 6-24.
c.
Inspect pistons for wear or damage. Replace any piston which is scored, cracked, broken, has wear patterns
which have obliterated the machining marks on the skirt or which has worn beyond the limits shown in Figure 6-
24.
d. Inspect cylinder block for damaged sealing surfaces and broken or damaged fins. Inspect cylinder bores for
scoring, damage, taper or piston to cylinder wear beyond the limits in Figure 6-24.
e. Inspect valves for damage, bending, burning and excessive wear.
f.
Inspect valve springs for damage and wear.
g. Inspect valve tappets for wear and scoring.
h. Inspect camshaft for damage and wear to bearing journals and cam lobes.
6-17
