Toro Groundsmaster 3500 30807 Service Manual page 241

IMPORTANT: DO NOT hit wheel hub, wheel hub
puller or wheel motor with a hammer during wheel
hub removal or installation. Hammering may cause
damage to the wheel motor.
5. Using hub puller (see Special Tools), loosen wheel
hub from wheel motor.
6. Remove lock nut, hub, and brake drum from motor
shaft. Locate and retrieve woodruff key.
7. Remove cotter pin from the adjustment rod. Sepa-
rate adjustment rod from the brake lever.
NOTE: The brake lever, backing plate, retaining clip,
return springs, brake shoes, and cam shaft can be re-
moved as a complete brake assembly.
8. Remove the brake assembly from the brake bracket
if desired. Remove four cap screws and lock nuts secur-
ing the assembly to the bracket.
9. Disassemble brake assembly as follows (Fig. 13):
A. Remove return springs from the brake shoes. Re-
move brake shoes from the backing plate.
B. Mark brake cam and brake lever to assure proper
alignment during reassembly. Remove retaining clip
from the brake cam. Pull brake lever from the cam
and remove cam from backing plate.
10.The brake bracket and wheel shield can be removed
as follows:
A. Remove lock nuts, spacers, and cap screws se-
curing the brake bracket, wheel shield, and hydraulic
motor to the frame.
B. Separate bracket and shield from the frame.
Installation (Fig. 12)
1. If removed, insert four cap screws through the frame,
hydraulic motor, spacers, wheel shield, and brake
bracket. Secure with lock nuts, but do not fully tighten.
2. Assemble brake assembly as follows (Fig. 13):
A. Secure backing plate to the brake bracket with
four cap screws and lock washers.
B. Apply antiseize lubricant to cam shaft splines. In-
sert cam shaft through the backing plate.
C. Attach brake lever to the cam shaft. Make sure
matchmarks are aligned properly. Secure lever to
shaft with retaining clip.
D. Lubricate brake shoe pivot points with a light
coating of grease.
E. Position both brake shoes on the backing plate so
that the concave heels attach to the anchor pin.
F. Insert both return springs into the holes of both
brake shoes. Make sure shoes fit snuggly against
the anchor pin and cam.
Groundsmaster 3500
3. If the brake assembly was not disassembled but was
removed as a complete assembly, secure backing plate
to the brake bracket with four cap screws and lock wash-
ers. Tighten fasteners.
4. Attach adjustment rod to the brake lever. Secure ad-
justment rod with cotter pin.
5. Thoroughly clean wheel motor shaft and wheel hub
taper.
6. Install woodruff key and slide wheel hub and brake
drum assembly onto the shaft.
7. Secure wheel hub and brake drum to the hydraulic
motor shaft with lock nut.
NOTE: For proper brake operation, the brake shoes
and backing plate must be concentrically aligned with
the brake drum.
8. To align brake shoes and drum, apply parking brake.
Then tighten four socket head screws and lock nuts that
secure the brake bracket, shield, and wheel motor to the
frame.
9. Install wheel and tire assembly. Secure with lug nuts
on drive studs.
10.Lower wheel to ground. Torque lug nuts from 70 to
90 ft- lb (95 to 122 N- m) in a criss- cross pattern.
Torque lock nut from 250 to 275 ft- lb (339 to 373
kg- m).
11. Check and adjust brake.
5
4
1. Return spring
2. Brake shoe (toe end)
3. Brake shoe (heel end)
4. Backing plate
Burnish Brake Pads
After brake pad replacement, burnish (break- in) the
brakes before use.
1. Bring the machine to full speed and apply the brakes
to rapidly stop the machine without skidding or locking
up the wheels.
2. Repeat this procedure 10 times. To avoid overheat-
ing the brakes, wait 1 minute between each stop.
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7
Figure 13
5. Retaining clip
6. Cam shaft
7. Anchor pin
Wheels, Brakes,and Chassis
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