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 TM 9-2815-220-24
PISTONS, RINGS, AND ASSOCIATED PARTS REPLACE/REPAIR
THIS WORK PACKAGE COVERS:
Disassembly, Cleaning, Inspection, Repair, Assembly
INITIAL SETUP:
Tools and Special Tools:
Expendable Materials:
General mechanic's tool kit (item 121, WP 0176)
Carbon-removing compound (item 7, WP 0173)
Inside micrometer caliper set (item 16, WP 0176)
Cleaning compound, solvent (item 8, WP 0173)
Magnifying glass (item 73, WP 0176)
Cloth, abrasive, crocus (item 9, WP 0173)
Outside micrometer caliper set
Personnel Requirements:
(item 17, WP 0176)
Track Vehicle Repairer (1) 63H10
Piston ring gauges: (WP 0176)
Equipment Conditions:
0.010 and 0.030 in. oversize (item 49)
Standard and 0.020 in. oversize (item 52)
Engine on maintenance stand (WP 0130)
Standard and 0.040 in. oversize (item 50)
Cylinder assembly and piston removed
Top ring groove (item 51)
Ring remover and replacer (item 78, WP 0176)
Telescoping gauge set (item 54, WP 0176)
Inspection kit, dye (item 35, WP 0176)
DISASSEMBLY
WARNING
Use goggles, rubber gloves, and rubber apron when cleaning parts in
carbon removing compound. Provide adequate ventilation. Avoid
inhalation of fumes and skin contact. If compound is splashed on
skin, flush with fresh water and wash with alcohol. Alcohol
containing 2 to 3 percent camphor is preferable.
1. Check to see if piston rings are free in piston
Rings
Grooves
grooves before removal.
a. Soak pistons with stuck rings in carbon
removing compound (item 7, WP 0173).
Rings must be loose in their respective
grooves prior to removal.
WP 0142 00-1
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