TM 5-3810-294-34
Figure 13-7. Crankcase, exploded view.
1.
Dipstick
15.
Plug (2)
2.
Tube
16.
Plug (4)
3.
Lower gage tube
17.
Bearing cap
4.
Valve plug
18.
Gasket
5.
Gasket
19.
Upper bearing
6.
Spring
20.
Pin (4)
7.
Valve piston
21.
Bearing
8.
Capscrew (4)
22.
Bearing
9.
Lock washer (4)
23.
Bearing
10.
Cover
24.
Bearing
11.
Gasket
25.
Pin (2)
12.
Plug
26.
Expansion plug (7)
13.
Plug (4)
27.
Plug
14.
Plug (2)
28.
(Federal Specification P-S-661) and dry thoroughly.
a. Remove dipstick (1), dipstick tube (2) lower gage
b. Clean all carbon or corrosion from engine parts.
tube (3).
Remove all remaining gasket material from parts.
b. Remove valve plug (4) , gasket (5), spring and
c. Clean bearings carefully in solvent and allow to dry.
valve piston (7).
Do not use compressed air to dry bearings. Soak bearings
c. Remove capscrews (8), lockwashers (9)
in oil immediately after drying.
camshaft cover (10) and gasket (11).
d. Clean all oil holes and passages with brass probes.
d. Remove plugs (12, 13, 14, 15 and 16).
Flush passages and dry with compressed air.
e. Remove bearing cap (17), gasket (18),upper
13-42. Inspection
bearing (19). Remove pin (20).
Inspect sleeve bores for scores, mars, etc.
Inspect
f. If camshaft bearings show evidence of wear they
bearings for wear, out of round, scratches, or scoring.
can be replaced. Remove bearings (21, 22 and 24)
using a bushing remover.
g. Remove pins (25). Expansion plugs should not
be removed unless it shows evidence of leakage.
13-41. Cleaning
a. Clean all metal parts in dry cleaning solvent
13-11
