Toro Workman 3000 Series Service Manual page 151

Disassembly (Fig. 5 and 6)
1. Partially loosen wheel nuts then jack up and support
vehicle (see Jacking Instructions in Operator's Manual).
Remove wheel nuts and then remove wheel.
2. If servicing rear brakes, loosen set screw on parking
brake control lever knob. Turn knob on parking brake le-
ver counterclockwise all the way to loosen parking brake
cable adjustment.
NOTE: It may be necessary to back off adjuster to re-
move brake drum. To back off adjuster, rotate brake
drum until access hole lines up with bolt adjuster on ad-
juster assembly. Use a hooked piece of wire to pull pawl
away from bolt adjuster, then turn bolt adjuster.
3. Remove brake drum.
4. If servicing front brakes, remove wheel hub from ve-
hicle (see Front Wheel Assembly (2 Wheel Drive) in this
section 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).
5. If servicing rear brakes, remove stub axle from ve-
hicle (see Stub Axle and Drive Shaft Service in the Ser-
vice and Repairs section of Chapter 6 – Drive Train).
6. Remove upper shoe spring (14), adjuster spring (20)
and then lower shoe spring (15).
NOTE: The adjuster assembly (27) consists of the fe-
male push rod (16), bolt adjuster (17) and adjuster
sleeve (18).
7. Remove hold down washers (22) and hold down
springs (23) from the hold down pins (26). Remove
brake shoes (13), pawl (19) and adjuster assembly (27).
8. If servicing rear brakes, disengage parking brake
cable from parking brake lever.
9. See Brake Cylinder Service in this section for infor-
mation on brake cylinder disassembly, inspection and
assembly procedures.
10.If needed, remove brake backing plate from vehicle
by removing four cap screws and lock washers.
Inspection
1. Clean and inspect brake drum any time they are re-
moved for brake service.
A. Check drum diameter at a minimum of three loca-
tions. Diameter should not exceed the over size limit
cast into the outside of the drum. Replace drum if lim-
it is exceeded.
Workman 3000/4000 Series
B. Replace drums if they are cracked or heat
spotted.
C. Scoring, grooves, taper, out of round and glazing
can be machined out as long as the oversize limit is
not exceeded. Minor scoring or glazing can be re-
moved with sand paper.
IMPORTANT: If one drum is machined, the drum on
the opposite side should be machined to the same
diameter to maintain equal braking forces.
D. Wipe braking surface of drum after machining
with a cloth soaked in denatured alcohol.
2. Inspect brake shoe and lining set (13).
IMPORTANT: Shoe and lining sets should be re-
placed for both wheels on the axle. Equal braking
forces must be maintained.
A. Replace if linings are excessively worn or dam-
aged. Oil, grease or brake fluid contamination is not
acceptable.
B. Replace if shoe webbing show signs of overheat-
ing as indicated by a slight blue color.
3. Inspect hold down washer (22), hold down spring
(23) and hold down pin (26). Replace parts if rusted, cor-
roded or bent. Replace washers and springs if they are
unable to lock onto the pin.
7
4
5
1. Upper shoe spring
2. Adjuster spring
3. Lower shoe spring
4. Hold down washer
Page 7 – 15
1
6
8
2
3
Figure 6
5. Brake shoe
6. Adjuster assembly
7. Brake cylinder assy
8. Pawl
Chassis
4
5