TM 9-2330-285-14&P/TO 36A11-21-10-1
S e c t i o n VI SERVICEABILITY STANDARDS AND WEAR LIMITS
GENERAL
The following table lists the points of measurement of critically dimensioned parts together with the
limiting dimensions for new or rebuilt parts and the extent of wear that can be tolerated. Wear limits for
mating parts are given as the total combined limit of wear of both parts. Both mating parts should be
replaced unless the extent of wear of one part is less than 25 percent of the combined wear, in which
case only the most worn part need be replaced.
POINTS OF MEASUREMENT
The points at which critical dimensions require measurement are illustrated in the accompanying
figure.
SIZE OR FIT
FIELD WEAR
ITEM
POINT OF MEASUREMENT
OF NEW PARTS
LIMITS
1
0.748 to 0.750 in.
Inside diameter of steering
0.30 in. (0.762
(1.899 to 1.905 cm)
arm bushing
mm) combined
with (2)
0.745 to 0.747 in.
2
0.030 in. (0.762
Outside diameter of towbar
pivot pin
(1.892 to 1.897 cm)
mm) combined
with (1)
0.045 in. (1.143 mm)
combined with (2)
0.760 to 0.770 in.
Inside diameter of towbar
3
0.0625 in. (0.159 cm)
pivot pin hole
(1.930 to 1.956 cm)
combined with (2)
4
Thickness of brake lining
0.323 to 0.343 in.
0.125 in. (0.318 cm)
(0.820 to 0.871 cm)
0.995 to 1.005 in.
Outside diameter of kingpin
5
.015 in. (0.381 mm)
(2.527 to 2.552 cm)
combined with (6)
0.999 to 1.001 in.
Inside diameter of knuckle
6
0.15 in. (0.381 mm)
(2.537 to 2.542 cm)
combined with (5)
bushing
10.995 to 11.005 in.
7
Inside diameter of brake-
.080 in. (0.2032 cm)
(27.927 to 27.952 cm)
drum
1.001 to 1.003 in.
8
Inside diameter of steering
.0312 in. (0.792 mm)
(2.542 to 2.548 cm)
combined with (9)
arm bushing hole