Clutch/Brake Linkage : Hydrostatic - White Outdoor LT-5 Service Manual

700 SERIES LAWN TRACTORS
9.

CLUTCH/BRAKE LINKAGE : HYDROSTATIC

9.1. Application of the clutch / brake pulls on the rod
that actuates the cam arm on the brake caliper,
and pivots the tension pulley bracket away from
the belt, creating slack. See Figure 9.1.
Tensioner
de-clutches belt
Figure 9.1
9.2. One spring, reaching rearward from the bracket,
works against the pedal. This spring tensions
the belt when the pedal is released.
• Failure of this extension spring will cause a loss
of drive and reduced belt life.
• A bracket that does not pivot because of dam-
age, binding, or corrosion will cause loss of drive
and reduced belt life.
9.3. A lighter extension spring, reaching forward from
the arm on the pedal shaft maintains slight pedal
pressure until the rear spring comes into play.
See Figure 9.3.
Clutch / brake pedal
return spring
Figure 9.3
Brake
ON
9.4. If it is necessary to remove the brake pedal
assembly (cross shaft), the process is very sim-
ple and the parts are easy to reach.
See Figure 9.4.
NOTE: This procedure may be necessary if the
pedal assembly cross-shaft or the pedal support
brackets exhibit wear after extended use.
• Remove the cutting deck to gain access to the
linkage.
• Mark or make note of the linkage connections
and orientations relative to the brake pedal
assembly.
• Disconnect the extension spring that reaches
forward from the brake pedal assembly
• Remove and discard the cotter pins that secure
the brake rod and the tensioner pulley control
rod to the brake pedal assembly. Disconnect the
rods.
• Remove the pedal support brackets from the
frame using a 1/2" wrench, and lower the pedal
assembly out of the tractor.
9.5. Brake pedal assembly installation can be
accomplished by reversing the removal process.
NOTE: Use new cotter pins on reassembly.
NOTE: Confirm correct operation of the brake /
clutch pedal mechanism before returning the
mower to service.
16
Brake pedal assembly
Figure 9.4