TM 5-4930-244-14
(33)
Remove head gasket (28) from low pressure cylinder head (24). Discard head gasket (28).
(34)
Remove two snap rings (29) and piston pin (30) from low pressure piston (31).
(35)
Remove piston rings (32) from low pressure piston (31).
(36)
Remove low pressure connecting rod (22) from low pressure piston (31).
(37)
Remove lower gasket (33) from crankcase (5). Discard lower gasket (33).
b.
Repair.
WARNING
·
Dry cleaning solvent is flammable and toxic. Do not use near open flame,
sparks or non-ventilated areas.
(1)
Thoroughly clean all parts with dry cleaning solvent.
(2)
Inspect the crankcase for breaks, cracks, drips or other defects. Replace If defective.
(3)
Inspect the bearings for free and even rotation. Replace if defective.
(4)
Inspect the crankshaft for cracks, scores, and distortion. Replace if defective.
(5)
Inspect the connecting rods for any visible damage or misalignment. Realign slightly twisted rods or
replace them if they are badly damaged.
(6)
Inspect the piston pin for any visible damage. If damaged replace it.
(7)
Inspect the piston rings for any visible damage or wear. If there is replace the set.
(8)
Inspect all threaded fittings for damaged threads.
(9)
Remove all traces of carbon and old gasket materials.
(10)
Replace all gaskets.
(11)
Replace all worn or damaged parts.
c.
Assembly.
NOTE
Prior to reassembly, lubricate all o-rings and packings with SAE No. 10 oil or light
machine oil. Protect all seals and sealing surfaces from damage and scratches in
any way possible.
(1)
Reassemble the piston (31, Figure 5-9) and connecting rod (22) as follows. Lubricate each piston and
connecting rod assembly with a light coat of engine oil.
(a)
Install piston pin (30) through piston (31) and connecting rod (22). Secure with snap rings (29).
(b)
Install piston rings (32) in piston (31).
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