Troy-Bilt 31AH7T74063 Storm Tracker Operator's Manual page 14

Support
Bracket
Auger
Pulley_
Rear
Belt
Frame
Support
/Bracket
Spring
Front
Auger Belt Spring
\Auger
Housing
Figure 17
Drive Belt
• Follow the first four steps of the instructions for
servicing the auger belts.
• Pull the idler pulley up and lift the belt off the engine
pulley and friction wheel disc. See Figure 16.
• Back out the stop bolt until the support bracket
rests on the auger pulley. See Figure 18.
• Slip the belt between the friction wheel and drive
disc. Remove and replace the belt. Reassemble
following the instructions in reverse order.
NOTE: The support bracket must rest on the stop bolt
after the new belt has been assembled.
Friction
Wheel \ Drive Plate
Stop Bolt
Support Bracket
Auger Pulley
Figure 18
Replacing FrictionWheelRubber
The rubber on the friction wheel is subject to wear and
should be checked after 25 hours of operation, and
periodically thereafter. Replace the friction wheel
rubber if any signs of wear or cracking are found.
• Drain the gasoline from the snow thrower.
• Tip the snow thrower up and forward, so that it rests
on the housing. Refer to Figure 9.
• Remove six self-tapping screws from the frame
cover underneath the snow thrower.
• Remove the click pins which secure the wheels,
and remove the wheels from the axle.
• Using a 7/8" wrench to hold the shaft, loosen, but
do not completely remove, the hex bolt and bell
washer on the left end of gear shaft. See Figure 19.
• Lightly tap the hex nut to dislodge the ball bearing
from the right side of frame before removing the hex
nut and belt washer from left end of shaft.
Track
Figure 19
• Move the gear shaft to the right and slide the friction
wheel assembly from the shaft. See Figure 20.
• Remove the four screws from the friction wheel
assembly. See Figure 20.
• Remove the friction wheel rubber from between the
friction wheel plates.
• Reassemble new friction wheel rubber to the
friction wheel plates and hub, tightening the six
screws in rotation and with equal force.
• Position the friction wheel assembly up onto the pin
of the shift rod assembly, and slide the shaft
through the assembly. Reassemble in reverse
order.
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