Ski-Doo FORMULA III, Shop Manual

Page: 179 / 356

Section 05 TRANSMISSION
Sub-Section 02 (DRIVE PULLEY)
05-02-2
GENERAL
Some drive pulley components (return spring,
ramp) can be changed to improve vehicle perfor-
mance in high altitude regions. The High Altitude
Technical Data booklet (P / N 484 0624 00 and 484
0545 00 for binder) gives information about cali-
bration according to altitude.
CAUTION : Such modifications should
only be performed by experienced me-
chanics since they can greatly affect vehicle
performance. Verify spring specifications be-
fore installation. Do not only refer to the spring
color code.
NOTE : TRA clutch stands for Total Range
Adjustable clutch.
WARNING : Any drive pulley repairs must
be performed by an authorized Bombar-
dier snowmobile dealer, or other such quali-
fied person. Sub-component installation and
assembly tolerances require strict adherence
to procedures detailed.
REMOVAL
30,31, Conical Spring Washer and
Screw
Use clutch holder (P / N 529 0064 00).
TYPICAL
1. Retaining screw
2. Insert in any slot
NOTE : Sliding half can be removed while
fixed half remains on crankshaft.
WARNING : Never use any type of impact
wrench at drive pulley removal and instal-
lation.
Remove retaining screw.
To remove drive pulley ass’y and / or fixed half
from engine, use puller (P / N 529 0079 00) for
503 and 583 engines. Use puller (P / N 529 0224
00) for 454, 494, 599, 670 and 779 engines.
CAUTION : These pulleys have metric
threads. Do not use imperial threads pull-
er. Always tighten puller by hand to ensure
that the drive pulley have the same type of
threads (metric vs imperial) prior to fully tight-
en.
To Remove Drive Pulley Ass’y :
Retain drive pulley with clutch holder.
Install puller in pulley shaft then tighten.
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A20D06A
1
2
529 0064 00
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