Parking Brake Switch - Toro GroundsmasterR 4300-D Service Manual

Parking Brake Switch

The parking brake switch is a normally open proximity
switch. The parking brake switch is attached to the bot-
tom of the brake pedal (Fig. 16).
When the parking brake is not applied, the parking brake
detent is positioned near the target end of the parking
brake switch so the switch is closed. The parking brake
detent is moved away from the switch when the parking
brake is applied causing the switch to open.
Adjustment
1. When the parking brake is not applied, the gap be-
tween the parking brake switch and the tab on the park-
ing brake detent should be from 0.070" to 0.100" (1.8 to
2.5 mm).
2. If gap is incorrect, loosen jam nuts that secures
switch to brake lever. Position switch with jam nuts to al-
low correct gap between switch and detent tab. Tighten
jam nuts to secure adjustment. Jam nuts should be
torqued from 162 to 198 in- -lb (18.4 to 22.4 N- -m). After
jam nuts are tightened, make sure that clearance be-
tween head of parking brake switch and tab on the park-
ing brake detent has not changed.
3. After adjustment to the parking brake switch, use the
Diagnostic Display (see Special Tools in this chapter) to
verify that parking brake switch and circuit wiring are
functioning correctly (see Parking Brake Switch in the
Component Testing section of this chapter).
Electrical System
4
1. Parking brake switch
2. Lock washer (2 used)
3. Jam nut (2 used)
Page 5 - - 20
5
3
2
2
1
Figure 16
4. Parking brake detent
5. Brake pedal
Groundsmaster 4300--D
3