Toro Workman 3000 Series Service Manual page 315

3. After a brake drum is machined, wipe braking surface
diameter with a cloth soaked in denatured alcohol. If one
brake drum is machined, the other should also be ma­
chine to the same diameter to maintain equal braking
forces.
Brake Lining and Spring Inspection
1. Inspect brake linings for excessive wear, damage, oil,
grease, or brake fluid contamination. If any of these
conditions exist, brake linings should be replaced. Do
not attempt to replace only one set of brake shoes; they
should be replaced as an axle set only to maintain equal
braking forces.
2. Examine brake shoe webbing, hold–down springs
and return springs for for signs of overheating, indicated
by a slight blue color. If any component exhibits signs of
overheating, replace hold–down and return springs with
new ones. Overheated springs lose their pull and could
cause brake linings to wear out prematurely. Inspect all
springs for sags, bends and external damage and re­
place as necessary.
3. Inspect hold down retainers and pins for bends, rust
and corrosion. If any of these conditions exist, replace
retainers and pins.
Backing Plate Inspection
1. Inspect backing plate shoe contact surface for
grooves that may restrict shoe movement and cannot be
removed by lightly sanding with emery cloth or other
suitable abrasive. If backing plate exhibits above condi ­
tion, it should be replaced. Also inspect for signs of
cracks, warpage and excessive rust, indicating need for
replacement.
Adjuster Mechanism Inspection
1. Inspect all components for rust, corrosion, bends and
fatigue. Replace as necessary.
Parking Brake Cable Inspection
1. Inspect parking brake cable end for kinks, fraying,
sticking and elongation and replace as necessary.
Removal
1. Remove upper spring (Item 1), then the adjuster
spring (Item 2) and lower spring (Item 3). Remove hold–
down washers (Item 4) and hold–down springs (Item 5),
Workman 3000 Series
then remove brake shoe assemblies (Item 7–8, 9) and
adjuster assembly (Item 10).
2. Loosen set screw on parking brake control lever knob
(Fig. 14). Turn knob on parking brake lever counter­
clockwise all the way to loosen cable adjustment.
3. Disengage parking brake cable from parking brake
lever (Fig. 10, Item 11).
Installation
1. Clean backing plate (Item 13), then lubricate backing
plate shoe contact areas.
2. Apply a light coat of long life grease to threaded areas
of adjuster (Item 10).
3. Position brake shoes on backing plate and secure
with hold down pins (Item 6), springs (Item 5) and wash­
ers (Item 4).
4. Rear brakes only: Attach parking brake cable to park ­
ing brake lever (Item 11). After installing cable to each
rear brake, check to make sure bottoms of brake shoes
are seated in grooves at bottom of backing plate.
5. Install lower spring (Item 3).
6. Install adjuster assembly (Item 10) in slots on brake
shoes, then the adjuster lever (Item 10) on adjuster lever
pin. Install adjuster spring (Item 2).
7. Install upper spring (Item 1).
8. Install brake drum. NOTE: Make sure access hole in
rear brake drums align with hole in stub axle flange.
9. Adjust brake shoes: Align access hole in brake drum
with star wheel on adjuster assembly, then rotate adjust­
ing screw to increase adjuster length until brake shoes
contact brake drum, then back off star wheel until drum
rotates freely.
10. Install wheel and secure with lug nuts. Tighten lug
nuts in a crossing pattern to a torque of 45 – 55 ft–lb (61
– 75 Nm).
11. After servicing brakes, start the engine and depress
brake pedal several times while vehicle is moving in re­
verse. Adjust parking brake (see Parking Brake Adjust­
ment).
Page 7 – 13 Steering, Brakes and Supension