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Page Title:
FIGURE 313. CYLINDER AND CRANKCASE STUDDING - LEFT REAR VIEW. |
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 clean up the threads, drill and tap
opening in casting and install a suitable
threaded insert.
Note. Special application studs have a
nylok insert for sealing the threaded
opening. The nylok insert end of the
stud is inserted in the casting.
(3) Oversize studs. Only 0.003-inch over-
size studs are furnished for field re-
placement of studs in aluminum castings.
If a standard stud is replaced, it should
be replaced with a 0.003-inch oversize
stud. For identification purposes, 0.003-
inch oversize studs are dipped in red
dye.
Note. Studs may have a coarse thread
on one end and a fine thread on the
other end. The coarse thread end must
enter the aluminum casting. Studs hav-
ing coarse threads on both ends are
used in particular applications and nor-
mally the short threaded end is in the
aluminum casting. Special application
studs have a nylok insert for sealing
STUDDING - LEFT REAR VIEW.
threads of studs. The nylok insert end of
stud is inserted in casting. Marking on
coarse thread end of stud determines
when stud is standard or oversize.
All replacement studs have a special
coating and must have a small amount of
mica-base antiseize compound (MIL-A-
13881) applied on threads before the
stud is installed in casting. Thread re-
placement stud into opening slowly to
prevent overheating. Observe setting
height given in Table III.
(4) Figures 313 and 314 show stud location.
Other studs referred to in Table III are
located on various illustrations as in-
dicated in table.
e. Gears.
(1) Replace all cracked gears.
(2) Replace all gears which do not conform
to tolerances specified in repair and re-
build standards paragraphs 291 through
298.
189
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