TM 55-1730-201-12
(3) Position the jack on the base assembly and
secure with two bolts and nuts.
(4) Install the other jack in the same manner.
45. HITCH AND TOWTUBE ASSEMBLIES.
a. Removal.
(1) Remove the bolt (12, figure 7), nut (14), and
washer (13) securing the platform tow assembly (11) to
the bracket on the fluid reservoir (17, figure 1).
(2) Remove the two bolts (15, figure 7), nuts (17),
and washers (16) attaching the hinged bar (10) to the
bracket under the bottom step and remove the platform
tow assembly (11).
(3) Remove the bolt (2), nut (4), and washer (3)
securing the hinged bar (10) to the platform tow
assembly (11) and remove the hinged bar (10) and at-
tached parts.
b. Cleaning, Inspection, and Repair.
(1) Wash all parts in an approved cleaning solvent,
Federal Specification P-D-680.
(2) Inspect all parts of the hitch and towtube
assemblies for cracks and dents. Straighten any dents
and weld any breaks.
c. Installation.
(1) Position the platform tow assembly (11) on the
bracket at the fluid reservoir and secure with a bolt (12),
nut (14), and washer (13).
(2) Position the platform tow assembly (11) on the
bracket under the bottom step and secure with two bolts
(15), washer (16), and nuts (17).
(3) Slide the hinged bar (10) into the towtube and
secure with a bolt (2), washer (3), and nut (4).
46. SWIVEL CASTERS.
a. Removal.
(1) Remove the four bolts attaching the
caster to the base assembly.
swivel
(2) Remove the other caster in the same manner.
b. Cleaning and Inspection.
(1) Wash the casters in cleaning solvent, Federal
Specification P-D-680.
(2) Inspect the casters for cut tires, flat spots on
tires, excessive wear on bearings, and cracked wheels.
(3) Replace a defective caster.
c. Installation. Position the swivel caster on the base
assembly and secure with four bolts.
47. WHEEL ASSEMBLY.
a. Removal and Disassembly.
(1) Remove the four bolts (21, figure 8) lockwashers
(22) and nuts (20) securing the axle assembly (19) to the
base assembly.
(2) Remove the five nuts (1) and lockwashers (2) at-
taching the outer rim (4) to the hub body (15) and remove
the rims and tire.
(3) Remove the eight bolts (3), lockwashers (7), and
nuts (8) securing the rims together. Remove the tire and
tube.
(4) Remove the grease cap (9), cotter pin (11), and
castellated nut (10) attaching hub body to the axle and
remove the hub body.
(5) Remove the bearing washer (12), roller bearing
inner race (13), and roller bearing outer race (14) from the
hub body.
(6) Remove the roller bearing outer race (16), roller
bearing inner race (17), and dust seal (18) from the hub
body (15).
b. Cleaning and Inspection.
(1) Wash all metal parts in cleaning solvent,
Federal Specification P-D-680.
(2) Inspect the tires for wear and breaks. Inspect
the wheel bearings for wear and rough spots. Inspect the
dust seal for serviceability. Inspect the wheel rims for
cracks and breaks. Inspect the tube for holes and leaky
valve.
(3) Replace any defective parts.
c. Installation.
(1) Pack the inner roller bearing race (17) with
grease and install the dust seal (18), roller bearing outer
race (16), and roller bearing inner race (17) in the hub
body (15).
(2) Pack the outer roller bearing race (14) with
grease and install the hub bearing (15), roller bearing
outer race (14), roller bearing inner race (13), and bear-
ing washer (12) on the axle assembly.
(3) Install the castellated nut (10) and tighten un-
til snug, then back off one castellation of the nut. Secure
with the cotter pin (11). Install the grease cap (9).
Change
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