Section 04 TRANSMISSION
Sub-Section 03 (DRIVE PULLEY)
04-03-2
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 0648 00 and 484
0545 00 for binder) gives information about cali-
bration according to altitude.
NOTE:
TRA clutch stands for Total Range
Adjustable clutch.
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.
Remove retaining screw.
To remove drive pulley ass’y and/or fixed half from
engine, use puller (P/N 529 0079 00) for 443, 503
and 583 engines. Use puller (P/N 529 0224 00) for
454, 494 and 670 engines.
-
CAUTION
Such modifications should only be per-
formed by experienced mechanics since
they can greatly affect vehicle performance.
Verify spring specifications before installa-
tion. Do not only refer to the spring color
code.
◆
WARNING
Any drive pulley repairs must be performed
by an authorized Bombardier snowmobile
dealer, or other such qualified person. Sub-
component installation and assembly toler-
ances require strict adherence to procedures
detailed.
'
◆
WARNING
Never use any type of impact wrench at
drive pulley removal and installation.
-
CAUTION
These pulleys have metric threads. Do not
use imperial threads puller. Always tighten
puller by hand to ensure that the drive pulley
have the same type of threads (metric vs im-
perial) prior to fully tighten.
A20D06A
2
529 0064 00
1
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