4.
(15)
Inspect upper shoe spring (14), lower shoe spring
and adjuster spring (20).
11.If servicing front brakes, install wheel hub to vehicle
(see Front Wheel Assembly (2 Wheel Drive) in this sec-
tion for series 3000 Workman vehicle or see Front
Wheel and Axle Housing Assembly in the Service and
Repairs section of Chapter 10 – Front Wheel Drive
A. Replace if springs show signs of overheating as
indicated by a slight blue color. Over heated springs
lose their tension and could cause brake linings to
wear out prematurely.
(4WD)
for series 4000 Workman vehicle).
12.If
(see Stub Axle and Drive Shaft Service in the Service
and Repairs section of Chapter 6 – Drive Train).
servicing rear brakes, install stub axle to vehicle
B. Replace sagging, bent or externally damaged
springs.
5.
6.
Inspect backing plate (2).
13.Install
brake drum. NOTE: On rear wheels, make
sure access hole in brake drum aligns with hole in stub
axle flange. On front wheels, access hole in brake drum
should align with hole in front hub.
A. Replace if shoe contact surfaces have grooves
that may restrict shoe movement and can not be re-
moved by sanding lightly with emery cloth.
14.Adjust
brake shoes:
B. Replace if cracked, warped or excessively
rusted.
A. Align access hole in brake drum with bolt adjust-
er.
Inspect female push rod (16), bolt adjuster (17) and
adjuster sleeve (18) for rust, corrosion, bending and fa-
tigue. Replace parts as necessary.
B. Rotate bolt adjuster to increase adjuster length
until brake shoes contact brake drum.
Assembly (Fig. 5 and 6)
C. Back off adjuster until drum rotates freely.
1.
backing plate to vehicle with four cap screws and lock
washers.
If backing plate was removed from vehicle, secure
15.Install
wheel nuts in a crossing pattern to a torque from 45 to
wheel and secure with wheel nuts. Tighten
65
ft–lb (61 to 88 N–m).
2.
If brake cylinder was removed from backing plate,
install cylinder assembly (see Brake Cylinder Service in
this section).
CAUTION
3.
areas with a thin coat of grease.
Clean backing plate (2). Lubricate shoe contact
After servicing the brakes, always check the
brakes in a wide open, level area that is free of
other persons and obstructions.
4.
Apply a light coat of grease to the threaded areas of
the adjuster assembly (27).
16.After
servicing brakes, start the engine and depress
5.
(2).
Position brake shoe set (13) onto the backing plate
Secure shoes with hold down pins (26), hold down
brake pedal several times while vehicle is moving in re-
verse.
springs (23) and hold down washers (22).
17.Adjust
parking brake (see Operator’s Manual).
6.
On rear brakes only: attach parking brake cable to
Burnish Brake Shoes
parking brake lever. After installing cable to each rear
brake, check to make sure bottoms of brake shoes are
seated in grooves at bottom of backing plate.
To ensure maximum brake performance after brake
shoes are replaced, burnish new brake shoes.
7.
(13).
Install lower shoe spring (15) to both brake shoes
IMPORTANT:While burnishing brakes, do not allow
the brakes to lock up. Allow brakes to cool between
applications.
8.
Install adjuster assembly (27) in the slots on the
brake shoes (13). Install pawl (19) into brake shoe and
onto top of bolt adjuster (17).
1.
about 200 ft (60 m) intervals while traveling at 10 to 15
mph (16 to 24 KPH).
Drive vehicle while making 6 to 7 normal stops at
9.
Install adjuster spring (20) to pawl (19) and brake
shoe (13).
2.
Make several normal stops with the vehicle going in
the reverse direction. This will self adjust the clearance
between the brake shoe and drum.
10.Install
(13).
upper shoe spring (14) to both brake shoes
Chassis
Page 7 – 16
Workman 3000/4000 Series
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