TM 5-3825-226-24
WHEEL AND BRAKE GROUP
Disc, Head and Rim Mounting:
(1) Torque for disc capscrews ................... 195 ±20 lb. ft. (265 ± 25 N-m)
(2) Torque for head capscrews ..................225 * 25 lb. ft. (300 ± 35 N-m)
(3) Torque for rim nuts .............................. 375 ± 25 lb. ft. (510 ± 35 N-m)
Disc and Lining Thickness:
Thickness of new disc ..................................................... 50 in. (12.7 mm)
Minimum permissible thickness of worn disc
(measured in area were pads contact disc) ..................... 44 in. (11.2 mm)
Thickness of lining assembly (including plate):
New ....................................................................................................88 in.
Minimum permissible thickness (worn) ............................. 38 in. (9.6 mm)
(Measure the lining at both ends because it can wear more at one
end than the other.)
Adjustment Procedure for Wheel Bearings:
a.
Fasten a rope to the studs for nuts 13) with at least two full wraps
around the outside circumference.
b.
Fasten a spring scale to the free end of the rope.
c.
While the wheel is turned, tighten nut (4) until a pull of 5 lbs.
(2.3 kg) is the indication on the scale.
d.
Install the lock, and outer nut (5).
e.
While cover (8) is removed, hit the end of shaft (10) with a hammer
until bolts (6) cannot be tightened to more than 200 to 220 lb........... ft.
(272 to 299 N.m).
f.
Install shims (9) to have dimension (A) of .125 in. ............... (3.17 mm)
minimum between plate (7) and end of shaft (10).
Brake Head Assembly:
(5) (6) Clearance between pin (6) and brake disc must not be less than
.010 in. (0.25 mm). If clearance is less than .010 in. (0.25 mm), turn
bolt (5) counterclockwise one turn, slide pin (6) to get .010 in. 0.25
mm) clearance and tighten bolt (5) again.
4-4
