CLEANING AND INSPECTION - TM-5-3895-349-14-P0632

All parts cleaned must be thoroughly dried immediately by

using moisture-free compressed air or soft, lintless

absorbent wiping rags free of abrasive materials such as

metal filings, contaminated oil or lapping compound.

INSPECTION

The importance of careful and thorough inspection of all

parts cannot be overstressed. Replacement of all parts

showing indication of wear or stress will eliminate costly

and avoidable failures at a later date.

Bearings

Carefully inspect all rollers, cages and cups for wear,

chipping or nicks to determine fitness of bearings for

further use. Do not replace a bearing cone or cup

Figure 76

individually without replacing the mating cup or cone at the

Remove inner and outer clutch discs. Turn clutch over

same time. After inspection, dip bearings in Automatic

and tap clutch shaft on a block of wood to re- move clutch

Transmission Fluid and wrap in clean lint- less cloth or

piston.

paper to protect them until installed.

CLEANING AND INSPECTION

Oil Seals, Gaskets, Etc.

CLEANING

Replacement of spring load oil seals, "0" rings, metal

sealing rings, gaskets and snap rings is more economical

Clean all parts thoroughly using solvent type -lean- ing

when unit is disassembled than premature overhaul to

fluid. It is recommended that parts be immersed in cleaning

replace these parts at a future time. Further loss of

fluid and moved up and down slowly until all old lubricant

lubricant through a worn seal may result in failure of other

and foreign material is dissolved and parts are thoroughly

more expensive parts of the assem- bly. Sealing members

cleaned.

should be handled carefully, particularly when being

installed. Cutting, scratching, or curling under of lip of seal

CAUTION : Care should be exercised to avoid skin rashes,

seriously impairs its efficiency. Apply a thin coat of

fire hazards and inhalation of vapors when using solvent

Permatex No. 2 on the outer diameter of the oil seal to

type cleaners.

assure an oil tight fit into the retainer. When assembling

new metal type sealing rings, same should be lubricated

Bearings

with coat of chassis grease to stabilize rings in their

Remove bearings from cleaning fluid and strike flat

grooves for ease of assembly of mating members.

against a block of wood to dislodge solidified particles of

Lubricate all "O" rings and seals with recommended type

lubricant. Immerse again in cleaning fluid to flush out

Automatic Transmission Fluid before assembly.

particles. Repeat above operation until bearings are

thoroughly clean. Dry bearings using moisture- free

Gears and Shafts

compressed air. Be careful to direct air stream across

bearing to avoid spinning. Do not spin bearings when

If magna-flux process is available, use process to check

drying. Bearings may be rotated slowly by hand to facilitate

parts. Examine teeth on all gears carefully for wear, pitting,

drying process.

chipping, nicks, cracks or scores. If gear teeth show spots

where case hardening is worn through or cracked, replace

Housings

with new gear. Small nicks may be removed with suitable

hone. Inspect shafts and quills to make certain they are not

Clean interior and exterior of housings, bearing caps,

sprung, bent, or splines twisted, and that shafts are true.

etc., thoroughly. Cast parts may be cleaned in hot solution

tanks with mild alkali solutions providing these parts do not

Housing, Covers, etc.

have ground or polished surfaces. Parts should remain in

Inspect housings, covers and bearing caps to be certain

solution long enough to be thoroughly cleaned and heated.

they are thoroughly cleaned and that mating surfaces,

This will aid the evaporation of the cleaning solution and

bearing bores, etc., are free from nicks or burrs. Check all

rinse water. Parts cleaned in solution tanks must be

parts carefully for evidence, of cracks or condition which

thoroughly rinsed with clean water to remove all traces of

would cause subsequent oil leaks or failures.

alkali. Cast parts may also be cleaned with steam cleaner.

CAUTION : Care should be exercised to avoid in- halation

of vapors and skin rashes when using alkali cleaners.