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TM 10-4320-351-14
6.3.12 Remove Piston and Rings. (Refer to figure 6-12.)
This task applies to either cylinder.
This task consists of:
a. Removal
INITIAL SET-UP:
Tools:
Materials/Parts Required:
Socket, Socket Wrench, 14 mm
None
(Appendix B, Section III, Item 3)
Handle, Socket Wrench, Ratchet, 3/8" Drive
(Appendix B, Section III, Item 3)
Pliers, Needle Nose
Equipment Condition:
(Appendix B, Section III, Item 3)
Cylinder head and cylinder removed
(para. 6.3.11)
CAUTION
·
With piston detached from connecting rod, the connecting rod can easily jam
and cause damage in the crankcase. Use caution when turning crankshaft in
order to avoid damage.
·
Mark each piston to ensure replacement in correct cylinder; i.e., flywheel-end
piston and PTO-end piston.
a.
Remove the two piston pin snap rings (1) and push the piston pin (2) free of the piston (3). Separate and remove
piston (3) from connecting rod (4).
b.
Remove three rings (5) from piston (3). Discard rings (5).
CAUTION
Note markings on connecting rod and cap or mark them to ensure that they can be
reassembled properly.
c.
Remove cap screws (6) from caps (7) at bottom of connecting rod (4). Remove connecting rod (4) and cap (7)
from crankshaft (8).
d.
Remove and discard rod bearings (9).
6-22
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