Parking Brake Switch - Toro Reelmaster 3550-D Service Manual

Parking Brake Switch

The parking brake switch is a normally closed proximity
switch that is located on the control console (Fig. 32).
The sensing plate that opens the switch is the parking
brake lever.
When the parking brake is applied, the parking brake
lever is positioned near the target end of the parking
brake switch so the switch is opened. The parking brake
lever is moved away from the switch when the parking
brake is released causing the switch to close.
Adjusting
1. Park the machine on a level surface, engage the
parking brake, lower the cutting units and stop the en-
gine. Remove the key from the ignition switch.
IMPORTANT: To prevent parking brake switch dam-
age, make sure that no components contact switch
through entire brake lever movement.
2. When the parking brake is applied, the clearance
between the brake lever and the end of the parking
brake switch is 0.250" (6.3 mm) (Fig. 16).
3. To adjust switch, loosen jam nuts that secure brake
switch to bracket and position switch to allow correct
clearance between switch and brake lever. Tighten
switch jam nuts from 162 to 198 in−lb (18.4 to 22.4
N−m). Recheck switch to brake lever clearance.
4. After adjusting the switch, use the Diagnostic Dis-
play (see Diagnostic Display − inputs in the Trou-
bleshooting section of this chapter) to verify that the
switch and circuit wiring are functioning correctly.
Reelmaster 3550−D/3555−D/3575−D
1
2
1. Control panel cover
2. Parking brake lever
3. Brake switch
2
1. Parking brake switch
Page 5 − 21
3
4
5
4
13 to 17 ft−lb
(18 to 23 N−m)
Figure 15
4. Jam nut (2)
5. Lock washer (2)
0.250 (6.3 mm)
1
Figure 16
2. Brake lever
Electrical System