Adjusting The Parking-Brake-Interlock Switch - Toro Groundsmaster 3280-D Operator's Manual

Adjusting the
Parking-Brake-Interlock
Switch
1. Shut off the engine and remove the key from the
key switch.
Note:
Do not engage the parking brake.
2. Remove the knob from the parking-brake rod
and the screws from the steering-tower cover
(Figure 70).
Figure 70
1. Steering-tower cover
2. Parking-brake knob/rod
3. Slide the cover up the steering shaft to expose
the parking brake switch
4. Loosen the screws and nuts that secure the
parking brake switch to the left side of the
steering tower (Figure
5. Align the paddle of the parking brake rod with
the switch plunger
3. Switch-mounting screws
4. Cover-mounting screws
(Figure 71).
70).
(Figure 71).
1. Parking-brake interlock
switch
6. Press down on the parking-brake rod and push
up the switch until the compressed length of the
switch plunger is 0.7 mm (0.030 inches); refer
to Figure
Note:
This is the distance between the
brake-rod paddle and the switch-plunger
g035079
housing.
7. Tighten the switch-mounting screws and nuts.
8. With the parking brake engaged, use a
multimeter to measure continuity through the
switch; when the position of the switch is correct,
you should measure continuity through switch
circuit.
Note:
If there is no continuity, move the switch
down slightly until there is continuity.
9. Check the operation of the parking brake
interlock switch as follows:
A. Engage the parking brake.
B. Press the traction pedal while the engine is
running and the PTO switch is in the O
position; The parking brake interlock switch
is operating correctly if the engine shuts off
within 2 seconds.
Important:
the interlock system is not operating
correctly. You must repair the interlock
system before operating the machine.
10. Install the steering-tower cover and brake-rod
knob.
59
Figure 71
2. Paddle (parking-brake
rod)
71.
If the engine does not stop,
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