Figure 6-1. Standard and oversize stud identification.

Figure 6-1. Standard and oversize stud identification.

MIL-S-22473. In cases where the dowel pin hole

(3)

Replacement.

is grossly out-of-round, it will be necessary to

(a) When threads in tapped holes appear

to be in good condition, clean threads with a tap.

drill the hole oversize, fashion a bushing, and

install a new pin in the bushing.

(b) When threads are stripped

damaged, or when stud was removed from

g. Painted Parts. Retouch or paint parts as

acceptable part.

aluminum casting for loose fit, always replace

necessary to produce an

stud with next larger oversize or in cases of

Retouch or repaint parts in their original color in

complete thread pullout, drill out threaded holes,

accordance with instructions contained in TM 9-

213.

tap hole for thread insert, install insert and

standard stud for repair. Markings and color

h. Gears and Shafts.

code

indicates

whether

stud

standard

(1) Replace all cracked gears and shafts,

and shafts that are bent or twisted.

oversize. Check marking and color code as

shown in figure 6-1 to be sure replacement is of

(2) Replace all gears and shafts which do

not

conform to tolerances specified in the

proper

size.

overhaul standards tables.

Note. When the threads on each end of

the stud are a different size, the coarse thread

(3) Replace all gears and shafts having

worn, galled, nicked, burred, or pitted teeth and

end must enter the aluminum casting.

splines. Remove any sharp fins and burs from

shown in figure 6-1 are marked on the coarse

splines with crocus cloth dipped in dry-cleaning

thread end of stud.

solvent

mineral

spirits

paint

thinner.

(4) Replace all splined gears and shafts that

(d) Apply a small amount of mica-base

antiseize

compound,

are damaged to the point of impairing assembly

Military Specification

MIL-T-22361, to threads before installing stud.

or operation. Replace all gears and shafts having

splines which do not match properly with mating

(e) Drive stud into tapped hole slowly to

prevent heating. Drive to setting height given in

splines.

appropriate table.

i. Bushings, Liners, and Bushing-type

Bearings. When bushings, litters, and bushing-

(f) When tapped holes in castings cannot

be fitted with oversize studs, the holes in the

type bearings are damaged or worn beyond

castings can be fitted with helical-coil inserts

specified limits, generally the associated parts

(par. 6-5) and studs of the original size can then

with which they are used must be replaced.

be installed.

Reference to (1) and (2), below, will be made in

f. Dowel Pins. Replace loose dowel pins. If

the rebuild section for the particular part when

original dowel pin was only slightly loose, install

replacement

bushings,

liners,

and

bushing-

new pin using sealing compound, Specification

type

bearings

required.

6-7