BOMBARDIER ski-doo Tundra Scandic 2004 Series, Shop Manual

Page: 250 / 427

Section 05 TRANSMISSION
Subsection 04 (DRIVEN PULLEY)
MMR2004-124_05_04A.FM
05-04-7
Spring Torsional Pre-Load
To check spring pre-load adjustment, use spring
scale hook (P/N 529 006 500) and a spring scale.
Remove drive belt.
Install the hook on the sliding half. Preventing
fixed half from turning, pull sliding half with the
spring scale perpendicularly with pulley axle.
Take 1 st measurement when sliding half begins to
turn. Rotate sliding half to 10 mm (3/8 in) of rota-
tion. Hold fish scale at this position. Slowly release
tension from fish scale and take 2
nd measurement
when sliding half begins to return. Spring pre-load
is the average measurement between these 2.
TYPICAL
Step : 1 st measurement
Step : 2
nd
measurement
To adjust spring pre-load, relocate spring end in
cam, moving it clockwise to increase the pre-load
and counterclockwise to decrease it. Refer to
TECHNICAL DATA.
NOTE: Always recheck torsional pre-load after ad-
justing.
Pulley Alignment and Drive Belt
Deflection
Refer to PULLEY DISTANCE AND ALIGNMENT
and DRIVE BELT to perform adjustments.
CAUTION: Drive belt and pulley adjustments
must always be checked whenever pulleys
have been removed, replaced or disassembled.
19, Cam
Make sure to install proper cam. Refer to TECHNI-
CAL DATA.
Cam angle is identified on cam.
NOTE: For high altitude regions, a service bulletin
will give information about calibration according to
altitude.
1 st
measurement
(when
opening)
+
2
nd
measurement
(when closing) =
Spring
pre-load
2
Example:
3.8 kg
(8.4 lb)
(when
opening)
+
3.4 kg
(7.5 lb)
(when
closing)
=
3.6 kg (8 lb)
Actual
spring
pre-load
2
529 006 500
A01B18A
1
2
1
2
B
O
M
B
A
RD
IER
6
5
4
3
2
1
44
°
A24D06A