Gears. - TM-10-3930-673-340100

TM 10-3930-673-34

2-15. REPAIR INSTRUCTIONS (CONT)

d. Studs. Replace all bent and stretched studs. Repair minor thread damage with a thread die. Replace

studs having stripped or damaged threads as outlined below:

(1)

Remove using a stud remover. Back studs out slowly to avoid heat buildup and seizure that can

cause stud to break off.

CAUTION

Refer to TM9-237, Welding Instructions, to avoid damage to castings if welding method

is used.

(2)

If studs break off too short to use a stud remover, use a stud extractor to remove or use "welding

method."

(3)

Broken studs can be removed by welding bar stock or a nut to stud and removing with wrench.

(4)

Install replacement stud slowly to prevent heat buildup and snapping off.

e. Gears.

(1)

Remove gears using pullers.

(2)

Only minor repairs to gears are permitted. Remove minor nicks, burrs, or scratches on gear teeth

with:

(a)

Fine mill file.

WARNING

Drycleaning Solvent (P-D-680) is TOXIC and flammable. Wear protective goggles and

gloves; use only in a well-ventilated area; avoid contact with skin, eyes, and clothes;

and do not breathe vapors. Keep away from heat or flame. Never smoke when using

solvent; the flashpoint for type I drycleaning solvent is 100F (38C), type II is 138F

(59C), and type III is 200F (93.3C). Failure to do so may result in injury or death to

personnel.

If personnel become dizzy while using cleaning solvent, immediately get fresh air and

medical help. If solvent contacts skin or clothes, flush with cold water. If solvent

contacts eyes, immediately flush eyes with water and get immediate medical

attention.

(b)

Crocus cloth dipped in drycleaning solvent.

(3)

If keyway is worn or enlarged, replace gear.

f. Bushings and Bushing Type Bearings. When bushings and bushing type bearings seize to a shaft and

spin in the bore, the associated part must also be replaced.

2-74