Parking Brake Sensor - Toro Groundsmaster 360 Service Manual

Parking Brake Sensor

The parking brake sensor acts as an input for the TEC
controller to determine when the parking brake is ap-
plied (brake latch engaged). The brake sensor is a nor-
mally open proximity sensor that is attached to the
bottom of the brake pedal (Fig. 17).
When the parking brake is not applied (brake latch not
engaged), the parking brake detent is positioned near
the target end of the parking brake sensor so the sensor
is closed. The parking brake detent is moved away from
the sensor when the parking brake is applied (brake
latch engaged) causing the sensor to open.
Adjustment
1. When the parking brake is not applied (brake latch
not engaged), the gap between the parking brake sen-
sor and the tab on the parking brake detent should be
from 0.148" to 0.188" (3.8 to 4.7 mm).
2. If gap is incorrect, loosen jam nuts that secure sensor
to brake lever. Position sensor with jam nuts to allow cor-
rect gap between sensor and brake 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 sensor and tab on the park-
ing brake detent has not changed.
3. Check that LED on the cable end of parking brake
sensor is illuminated when the parking brake is not ap-
plied (brake latch not engaged). The LED should not be
illuminated when the parking brake is applied (brake
latch is engaged).
4. After adjustment to the parking brake sensor, use the
Diagnostic Display (4WD machine) or the SCM (2WD
machines) to verify that parking brake sensor and circuit
wiring are functioning correctly (see Parking Brake Sen-
sor in the Component Testing section of this chapter).
Groundsmaster 360
4
3
2
1. Parking brake sensor
2. Brake lever
3. Parking brake detent
1. Parking brake sensor
2. Parking brake detent
Page 5 - - 23
6
5
1
1
Figure 17
4. Parking brake latch
5. Lock washer (2 used)
6. Jam nut (2 used)
2
1
3
Figure 18
3. Gap
Electrical System