Park Brake Switch - Cub Cadet 900 Series Professional Shop Manual

ELECTRICAL SYSTEM
Brake switch (electric PTO)
The brake switch is mounted on the top side of the
frame, on the left side behind the dash.
See Figure 7.15.
Figure 7.15
• The plunger on the switch is depressed when
the clutch / brake pedal is pressed-down, de-
clutching the drive belt and applying the brakes.
The switch contains two sets of contacts.
• The brake switch is accessed by removing the
fender and dash. The fender and dash can be
removed by following the steps described in
Chapter 4: Body/Chassis.
• A normally open (NO) set of contacts is in the
starter inhibit circuit. When the clutch / brake
pedal is depressed, the contacts are closed,
power coming from the key switch (key switch in
START) through the orange wire is passed on to
the PTO switch through the orange wire with
black trace.
• A normally closed (NC) set of contacts is in the
safety shut-down circuit. A circuit is completed
from the ignition module's primary windings to
ground. The ground comes from the seat switch
(if the seat is empty) through the yellow wire with
black trace. If the brake pedal is up, that ground
signal will pass through the brake switch to the
ignition through the yellow wire.
104

Park brake switch

The park brake switch is only used on tractors that are
equipped with a manual PTO. The park brake switch is
a simple NO single pole single throw (SPST) switch.
The park brake switch is located on the frame, behind
the dash on the right hand side. See Figure 7.16.
Brake
Switch
•
•
•
Figure 7.16
The green wire is attached to ground.
The purple wire is connected to the brake
switch.
If the brake pedal is depressed and the parking
brake is set, a ground signal will pass from the
park brake switch, through the brake switch to
the RMC module.
Park brake switch