*C2
P A R 2 3 5
CHAPTER 6
REPAIR AND REBUILD STANDARDS
2 3 5 . G E N E R A L
a . W e a r L i m i t s a n d P o i n t s o f M e a s u r e-
ment. Data covering the sizes and fits of new
parts and wear limits information, is given in
pars. 236 through 249, below. Points of meas-
u r e m e n t o f a l l c r i t i c a l d i m e n s i o n s a r e i n d i -
c a t e d b y s m a l l l e t t e r s i n t h e e x p l o d e d v i ew
parts groups, figs. 373 through 386, fold-outs
2 through 15.
b . T - T i g h t , L - L o o s e . T h e " S i z e a n d F it
of New Parts" column includes the manufacture
dimensions and tolerances, and the fits of mat-
ing parts. T denotes a tight (interference) fit;
L denotes a loose (clearance) fit.
c . M e a n i n g o f W e a r L i m i ts
(1) The wear limits indicate the dimen-
sions to which a part may wear before it must
be replaced. Normally, any part not worn be-
yond its wear limit will be approved for con-
tinued use, if it is not otherwise damaged.
( 2 ) A s i n g l e a s t e r i s k ( * ) i n t h e w e a r
limits column indicates that the part should be
replaced when worn beyond the limits stated
in "Size and Fit of New Parts" column.
( 3 ) A d o u b l e a s t e r i s k ( * * ) i n d i c a t e s a
limit applying to the fit between mating parts.
In such cases, wear is allowed on either or
both mating parts so long as the fit is within
the specified limit.
d . S t a n d a r d T o r q u e L i s t i n g s . S t a n d a rd
torque to which bolts, nuts and screws are to
be tightened is listed in par. 250 under Table
V . S T A N D A R D T O R Q U E S P E C I F I C A T I O N S.
T h e s e a r e n o r m a l t o r q u e v a l u e s
-
s p e c i a l
torques are listed in the copy pertinent to the
a p p l i c a b l e p a r t s .
2 0 2
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