assembly over the end of the axle and position it
against the flange with the brake return spring at
the top (fig. 4-2). Insert the six capscrews through
the backing plate and axle flange, assemble the
lockwashers and hex nuts and tighten (fig. 4-3).
Slip the brake cable into the loosened clamp at the
axle flange by compressing the spring toward the
end of the cable (fig. 1-7). Push the conduit portion
of the cable into clamp. Insert the end of the cable
into the brake lever and line up the holes so that the
clevis pin may be inserted from the top of the lever
(fig. 4-5). Insert the cotter pin into the hole in the
end of the clevis pin and secure it by bending back
both halves. Make sure the cable assembly is
positioned in its clamp and tighten the nut on the
clamp bolt.
Slip the brake drum, rim side in, over the five studs
on the hub and position it over the hub groove.
insert the three flat head machine screws through
Figure 4-4. Installing bearing cup with remover and replacer
the drum into the hub and tighten them.
and remover and replacer screw.
(2) Install bearing cups (fig. 4-4). Slip the
4-9. Axle Maintenance
bearing cup over the bearing cup remover and
a. Clean and Lubricate Wheel Bearings (fig. 4-
replacer (2, fig. C-22) as shown in figure 4-4, so
2). Any time the wheel, hub, and drum assembly is
that the large end of the inside diameter is against
removed, the wheel bearings should be cleaned and
the replacer shouder. Insert removr and replacer
repacked with the proper lubricant as specified on
screw (3, fig. C-22) as shown in figure 4-4.
the lubrication chart (fig. 3- 1). Wash the bearing
spreading the replacer. Start the cup into the hub
parts in dry-cleaning solvent or mineral spirits paint
and move it into place by tapping on the end of the
thinner. Clean the entire inside of the hub so that
screw with a plastic or lead mallet.
dirt will not enter the bearings. Dry the bearing
(3) Install inner bearing cone and oil seal.
parts using compressed air, when available, or
Service the bearings and oil seal (para 4-9) before
clean wiping cloths. inspect the bearings for
installation. Insert the inner wheel bearing, small
damaged rollers or cages, looking for worn or
diameter first, into the brake drum and of the hub.
scored spots. Replace the bearing if damage is
insert the oil seal, plain metal side out, into the
found. Fill the palm of the hand with wheeling bearing
brake drum end of the hub and push it in so that
grease and work it into the bearings, filling the
the metal side of the seal is just flush with the hub
cavities between the rollers. Assemble bearings in
face. A slight pressure around the rim will be
clean hub.
required to install the seal.
b. Clean and Inspect Oil Seal (fig. 4-2). Wash the
(4) Install hub and drum assembly on axle.
seal in dry-cleaning solvent or mineral spirits paint
NOTE
thinner and inspect it for damage, hardened
If a new axle is being installed. new axle
leather. and wear. Replace if necessary. Cover
nuts and washers will be furnished with the
leather of seal with a light film of clean grease.
axle. These must be removed before at-
CAUTION
tempting to assemble the hub and drum
Upon using air do not spin the bearing.
assembly to the axle.
Place the hub and drum assembly squarely over the
4-10. Axle Installation
end of the axle and push it on. Insert the wheel
a. Assemble Axle to Springs (fig. 1-5). Insert the
outer bearing over the axle shaft and slide it into
axle between the frame and either spring and
place in the hub. Assemble the plain washer and
position it on top of the springs so that the axle
adjusting nut using nut wrench (1, fig. C-22) as
spring pads are centered over the spring center bolt.
shown in figure 4-1. Adjust the hearings (para 4-7).
Drop the spring clips over the axle on both sides of
Assemble the lockwasher and locknut and bend the
thc spring. Position the spring clip plates on the
lockwasher back over one flat of the lock nut. Place
bottom of the spring clips. Assemble the lock-
washes and special spring clip nuts to the clips and
a new hub cap gasket and the hub cap on the end of
the hub and fasten them with the six hub cap lock-
tighten.
washers and capscrews.
b. Install Brake Assembly. Slip the brake
4-6
