TM 9-6115-664-13&P
5-15. CYLINDER, PISTON, AND CRANKSHAFT MAINTENANCE
This task covers removal, inspection, repair, and installation
INITIAL SETUP
Tools:
Equipment Condition:
Shop Equipment, Automotive Maintenance
Cylinder Head Removed (Para. 5-9)
and Repair (Item 4, App. B)
Parts/Materials:
Cleaning Solvent, PD-680 (Item 9, App. E)
Lubricating Oil (Item 10, App. E)
A.
REMOVAL
1.
Manually rotate the flywheel until the piston (5, Figure 5-9) reaches the bottom of its stroke.
2.
Remove bottom half of connecting rod (1) from top half (2) by removing screws (3). Remove connecting rod halves
and bearing shells (4) from crankshaft (16).
3.
Manually crank the flywheel until piston (5) reaches the top of its stroke. Remove cylinder (6), piston (5), and
connecting rod (2) as one unit. Separate piston from cylinder.
4.
Using a drift punch, gently drive piston pin (8) out of piston (5). Remove piston.
5.
Remove bushing (10) from top half of connecting rod (2) only if replacement is required.
6.
Remove camshaft (Para. 5-12).
7.
Remove governor pin (17) and governor (18) from crankshaft (16).
8.
If installed, remove flywheel nut (11) from crankshaft (16). Remove belleville washers (12), angle ring (13), and O-
ring seal (14). Discard O-ring seal.
9.
Using a bearing puller, remove bearing (15). Remove crankshaft (16) from engine block and place on a suitable
work surface.
10.
Remove flywheel (Para. 5-14).
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