Section 06 TRANSMISSION
Subsection 02 (DRIVE PULLEY)
GENERAL
Some drive pulley components (return spring,
ramp) can be changed to improve vehicle perfor-
mance in high altitude regions. A service bulletin
will give information about calibration according
to altitude.
CAUTION: Such modifications should only be
performed by experienced mechanics since
they can greatly affect vehicle performance.
Verify spring specifications before installation.
Do not only refer to the spring color code.
NOTE: TRA drive pulley stands for Total Range
Adjustable drive pulley.
WARNING
Any drive pulley repairs must be performed
by an authorized Bombardier snowmobile
dealer. Sub-component installation and as-
sembly tolerances require strict adherence to
procedures detailed.
REMOVAL
30,31, Conical Spring Washer
and Screw
Secure drive pulley retainer (P/N 529 035 674) over
a sliding half tower.
A32D1WC
529 035 674
INSERT THE TOOL IN SLIDING FLANGE TOWER
WARNING
Never use any type of impact wrench at drive
pulley removal and installation.
Remove retaining screw.
To remove drive pulley ass’y and/or fixed half from
engine, use puller (P/N 529 022 400).
CAUTION: These pulleys have metric threads.
Do not use imperial threads puller. Always
tighten puller by hand to ensure that the drive
pulleyhasthesametypeofthreads(metricvs
imperial) prior to fully tightening.
To Remove Drive Pulley Ass’y:
Retain drive pulley with drive pulley retainer
(P/N 529 035 674) .
Install puller in pulley shaft then tighten.
DISASSEMBLY
1,2, Screw and Ring Gear
CAUTION: Retaining screws must be heated
before disassembly. Do not exceed 150°C
(300°F).
5,6, Fixed and Sliding Halves
CAUTION: Do not tap on governor cup.
Screw puller into fixed half shaft about 13 mm
(1/2 in). Raise drive pulley and hold it by the sliding
half while knocking on puller head to disengage
fixed half.
A16D01A
1
2
TYPICAL
1. Puller
2. Holding sliding half
NOTE: No components marking is required before
disassembling this drive pulley since it has factory
mark and arrows as indexing reference.
216 mmr2004-Rev