Tire Repair and Replacement

TM 10-3990-203-13&P

j. Insert cotter pin ('7) through the hole in axle (6).

i. Remove spindle nut (11) and washer (12) from

Secure cotter pin.

axle (6).

k. Place grease cap (8) into hub (3).

j. Pull hub (3) off axle (6).

1. Place tire (1) and rim (2) assembly in position

k. Outer bearing assembly (13) will come off axle

on hub (3).

(6) when hub (3) is removed.

m. Insert rim bolts (9) through rim clamps (10)

and thread bolts into hub (3).

n. Tighten all rim bolts (9) by hand.

Inspect inner bearing assembly (4) contained

in hub for damage. Do not remove unless

o. Place a 3/4 inch socket and ratchet over any

replacement is required.

one of rim bolts (9) and tighten. Move the socket to

the bolt directly across from the bolt just tightened

l. Remove inner bearing assembly (4), if re-

and secure bolt. Continue this procedure until all

quired.

rim bolts and clamps are securely fastened.

m. Remove seal (5).

NOTE

n. Refer to the parts list for replacement parts.

The rim bolts may need tightening more than

one time d u r i n g this procedure to obtain

5.5.6.2 Tire Repair and Replacement

85-90 ft lbs torque.

a. Tire (1) can be removed from rim (2) using a

5.5.7 Grating (Fig. 5-8)

conventional tire changer and can be repaired (if

possible) with conventional rubber plugs or a com-

mercial valve replacement.

5.5.7.1

Disassembly

b. Refer to the parts list for replacement parts.

a. The grating can be removed from the ramp

frame in sections. There are four sections which

can be removed individually. The grating does not

5.5.6.3

Reassembly

break down any further.

a. Pack inner bearing assembly (4) with water-

b. To remove a section of grating, remove all

proof a u t o m o t i v e grease, Military Specification

the clamps as necessary.

MIL-G-10924, or equivalent.

c. To remove the clamps, proceed as follows:

b. Push inner bearing assembly (4) into hub (3)

until firmly seated.

(1) Place a 1/2 inch socket with ratchet over

clamp bolt (1).

c. Press seal (5) into hub (3) until firmly seated.

(2) Place a 1/2 inch box wrench over locknut

d. Place hub (3) with inner bearing assembled

(4). Loosen and remove locknut.

onto axle (6).

(3) Remove washer (3) and pull clamp bolt (1)

e. Pack outer bearing assembly (13) with water-

up to remove.

proof a u t o m o t i v e grease, Military Specification

MIL-G-10924, or equivalent.

(4) Remove clamp (2) from grating surface.

f. Place outer bearing assembly (13) over axle

(5) Remove the section of grating off the ramp

(6) and push until firmly seated in hub (3).

frame.

g. Slide washer (12) over axle (6).

(6) Refer to the parts list for replacement

parts.

h. Thread spindle nut (11) onto axle (6) until snug

against washer (12).

5.5.7.2

Reassembly

NOTE

a. Lay a section of grating in place on the ramp

frame. The grating will lay flat on the top of the

Spindle nut (11) should be tight enough to

I-beams.

prevent any play, or w o b b l e, in the hub

assembly, but not so tight as to keep the hub

b. Insert bolt (1) through clamp (2) and then

from turning on the axle.

through the grating and one of the holes in the I-beam.

Ensure the clamp seats i t s e 1 f over the grating

i. Ensure the hole in the end of axle (6) can be

properly.

seen through the slots in spindle nut (11).

5-10