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143 BRAKES
6. Back the eccentric (B) off until the shoe is free
to rotate the wheel without touching the drum.
Tighten lock nut (A).
7. The same procedure applies to the other 3
wheels.
FIGURE 6
LUBRICATION
A thin film of Lubriplate grease should be
placed on the brake shoe support ramp on the
backing plate to combat rust and insure free brake
shoe action.
NOTE: This lubrication should be done at the
time of brake reline or adjustment, with hubs
and drums removed and with brake cylinder
clamps in place.
TO LUBRICATE BRAKE CABLES
1. Disconnect clevis (20), Figure 1 and support
bracket (18) at frame rail.
2. Pull cable housing forward out of backing plate
(snap-in type).
3. Lubricate cable as in Figure 7, with viscous
chassis lubricant, working housing back and
forth to distribute lubricant.
4. Push housing into backing plate and connect
support bracket and clevis.
FIGURE 7
TROUBLE SHOOTING
BRAKE PEDAL GOES TO FLOORBOARD
1. Normal wear of lining.
2. Improperly adjusted brake shoes.
3. Leak in hydraulic system.
4. Air in hydraulic system.
5. No fluid in system.
ALL BRAKES DRAG
1. Mineral oil in system.
2. Porthole in master cylinder is closed.
ONE BRAKE DRAGS
1. Brake shoe return spring is weak.
2. Brake shoe set too close to the drum.
3. Wheel cylinder cups distorted.
4. Loose wheel bearings.
5. Dirt in the brake line.
BRAKE PEDAL ACTION SPRINGY OR
SPONGY
1. Brake shoes improperly adjusted.
2. Air in hydraulic system.
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