TM 9-2330-379-14&P
Section VIII SERVICEABILITY STANCDARUDS 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
Outside diameter of kingpin
1.792/1.793
1.787/1.788
(.005 in. max)
2
Inside diameter steering
1.5040/1.5070
0.015 max combined
link and tow bar bushings
with (3)
3
Outside diameter steering
1.4985/1.500
0.015 max combined
link and tow bar pin
with (2)
4
Minimum thickness brake
.5 in thk (upper
.125 in. min thk
lining
non-riveted surface)
(upper non-riveted
surface)
5
Maximum inside diameter
14.995/15.005
15.120 max turn
brake drum
down dia.
6
Outside diameter front and
1.540/1.4985
0.015 max combined
rear dolly upper and lower
with (7)
arm pins at adaptor
7
Inside diameter front and
1.5040/1.5070
0.015 max combined
rear dolly upper and lower
with (6)
arm bushings at adaptor pins
5-32
