Toro Workman 3000 Series Service Manual page 152

4. Inspect upper shoe spring (14), lower shoe spring
(15) and adjuster spring (20).
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.
B. Replace sagging, bent or externally damaged
springs.
5. Inspect backing plate (2).
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.
B. Replace if cracked, warped or excessively
rusted.
6. Inspect female push rod (16), bolt adjuster (17) and
adjuster sleeve (18) for rust, corrosion, bending and fa-
tigue. Replace parts as necessary.
Assembly (Fig. 5 and 6)
1. If backing plate was removed from vehicle, secure
backing plate to vehicle with four cap screws and lock
washers.
2. If brake cylinder was removed from backing plate,
install cylinder assembly (see Brake Cylinder Service in
this section).
3. Clean backing plate (2). Lubricate shoe contact
areas with a thin coat of grease.
4. Apply a light coat of grease to the threaded areas of
the adjuster assembly (27).
5. Position brake shoe set (13) onto the backing plate
(2). Secure shoes with hold down pins (26), hold down
springs (23) and hold down washers (22).
6. On rear brakes only: attach parking brake cable to
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.
7. Install lower shoe spring (15) to both brake shoes
(13).
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).
9. Install adjuster spring (20) to pawl (19) and brake
shoe (13).
10.Install upper shoe spring (14) to both brake shoes
(13).
Chassis
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
(4WD) for series 4000 Workman vehicle).
12.If servicing rear brakes, install stub axle to vehicle
(see Stub Axle and Drive Shaft Service in the Service
and Repairs section of Chapter 6 – Drive Train).
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.
14.Adjust brake shoes:
A. Align access hole in brake drum with bolt adjust-
er.
B. Rotate bolt adjuster to increase adjuster length
until brake shoes contact brake drum.
C. Back off adjuster until drum rotates freely.
15.Install wheel and secure with wheel nuts. Tighten
wheel nuts in a crossing pattern to a torque from 45 to
65 ft–lb (61 to 88 N–m).
After servicing the brakes, always check the
brakes in a wide open, level area that is free of
other persons and obstructions.
16.After servicing brakes, start the engine and depress
brake pedal several times while vehicle is moving in re-
verse.
17.Adjust parking brake (see Operator's Manual).
Burnish Brake Shoes
To ensure maximum brake performance after brake
shoes are replaced, burnish new brake shoes.
IMPORTANT:While burnishing brakes, do not allow
the brakes to lock up. Allow brakes to cool between
applications.
1. Drive vehicle while making 6 to 7 normal stops at
about 200 ft (60 m) intervals while traveling at 10 to 15
mph (16 to 24 KPH).
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.
Page 7 – 16
CAUTION
Workman 3000/4000 Series