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 TM 5-2420-224-34
CHAIN SAW REPAIR (CONT)
15.
DISASSEMBLE assembled VALVE (28) by
REMOVING retaining ring (29), spring washer
(30), spring (31), spring washer (32), packing
(33), VALVE (34), and packing (35).
DISCARD PACKINGS.
1 6 . IF WORN or DAMAGED, REMOVE two
sleeve BEARINGS (36 and 37).
17. REMOVE two screw PLUGS (38 and 39).
INSPECTION
1.
Gear chamber bores and bottoms around
d r i v e shaft sleeve bearings should be
polished, not rough or grooved.
2.
Sleeve bearings should be grey in color;
replace if bores are yellow-bronze.
Flat surface around gear chamber and bolt
3.
holes should be flat and free of nicks.
4.
Gears should have straight tips without nicks,
square tooth ends, and smooth even polish
on teeth and end surfaces. Check for cracks
at groove in drive gear bore.
21-40
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