GENERAL MAINTENANCE INSTRUCTIONS -726030179

TM 9-2320-360-34-2

22-2. GENERAL MAINTENANCE INSTRUCTIONS (CONT)

WARNING

Dry cleaning solvent P-D-680 is toxic and flammable. Wear protective goggles and

gloves and use only in a well-ventilated area. Avoid contact with skin, eyes, and

clothes, and don't breathe vapors. DO NOT use near open flame or excessive heat.

The flash point is 100-138 F (38-69 C). If you become dizzy while using cleaning

solvent, get fresh air immediately and medical aid. If contact with eyes is made,

wash your eyes with water and get medical aid immediately.

CAUTION

DO NOT use caustic soda solution in place of steam cleaning method. Use only

dry cleaning solvent to clean friction-faced dutch plates.

(2) Thoroughly clean metal transmission parts, except bearings and friction-faced clutch plates, with dry

cleaning solvent (Item 54, Appendix B) or by steam cleaning method.

WARNING

Compressed air for cleaning purposes will not exceed 30 psi (207 kPa). Use only

with effective chip guarding and personal protective equipment (goggles/shield,

gloves, etc.).

(3) Drip-dry and air-dry bearings, then oil (Item 44, Appendix B). Dry other parts with compressed air. Oil

steam-cleaned parts immediately after drying to prevent rust.

(4) Clean oil passages by working a piece of soft wire back and forth through them. Flush with dry cleaning

solvent (Item 54, Appendix B). Dry with compressed air.

Inspection. Follow these inspection instructions when working on the transmission.

(1) Inspect surfaces which contact gaskets, packing, or seals. Ensure there are no nicks, burrs, or scratches.

Remove or correct any defect with crocus cloth (Item 16, Appendix B) before assembly.

(2) Inspect bores for wear, scratches, grooves, burrs, or dirt. Remove scratches and burrs with crocus cloth

(Item 16, Appendix B) and clean. Remove foreign matter from bores and clean. Replace deeply

scratched, grooved, and excessively worn parts.

(3) Inspect housing and other cast metal parts for cracks. Replace cracked parts as necessary.

(4) Inspect gears for scuffed, nicked, burred, worn, or broken teeth. If defect cannot be corrected with soft

stone, replace damaged gear.

(5) Inspect thrust face of gears for scoring, scratches, or burrs. If defects are found, remove with soft stone. If

defects cannot be removed, replace gears as necessary.

(6) Inspect splined parts for stripped, twisted, chipped, or burred splines. Remove burrs with soft stone and

replace parts if other defects are found. Spline wear is not considered defective except when it affects

tightness of the assembly.

(7) Inspect retaining rings for nicks, distortion, or looseness. Replace retaining rings if loose or damaged.

(8) Inspect springs for signs of overheating, permanent set, or wear due to rubbing of adjacent parts. Replace

springs if damage is found.

(9) Inspect friction-faced dutch plates and steel dutch plates for burrs, scoring, excessive wear, distortion,

embedded metal, galling, cracks, and damaged teeth or tangs. Remove burrs and minor surface defects

with soft stone. If other than minor surface defects are found, replace clutch plates.

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