Ski-Doo FORMULA III, Shop Manual

Page: 275 / 356

Section 07 REAR SUSPENSION
Sub-Section 01 (SUSPENSION SC-10 HIGH PERFORMANCE, CROSS-COUNTRY AND
07-01-10
5. One 0.114 mm spacer washers minimum (2 or
more recommended) should always be used
between shim stack and valve stopper washer.
This will allow needed room for the valve shims
to function.
6. Compression valve stop must have slots facing
shim stack.
General Information
Over damping is a common error by suspension
tuners. When operating an over-damped snow-
mobile, you will experience a packing of the sus-
pension. The over-damping will not allow the
suspension to recycle to full extension after an ob-
stacle compresses the suspension. This situation
will eventually bottom the suspension (pack up)
and not allow it to cycle properly.
Under damping can result in insufficient or uncon-
trolled damping. This condition would allow the
damper to move freely (unrestricted) in both di-
rections. The most noticeable symptom will be a
bouncing of the snowmobile when encountering
bumps.
NOTE : Careful inspection of the damping
shims should be completed. Any bent shims
must be replaced to insure redamping (valving)
will be in perfect order.
Under damping symptoms can be mistaken for an
aerated shock due to low gas pressure. Although
it is exceptional, the gas pressure should be
checked.
If the seal carrier assembly is replaced, use seal
pilot (P / N 529 0265 00) to guide seal over damp-
er shaft. Lubricate seal carrier guide pilot before
use.
CAUTION : Failure to use seal pilot will re-
sult in seal damage.
Reassemble damper rod assembly, using care to
properly assemble shim packs as required for
your damping needs.
'
-
SHIM EQUIVALENCE FOR SAME DIAMETER
THICKNESS
mm
SHIM QUANTITY
0.114 11 5.6 2.4
0.152 4.7 2.4 1
0.203 2 1
0.254 1
FRONT
QTY
D
mm
(in)
Thick
mm
(in)
Spacer 1
12 mm
(0.472 in)
0.023 mm
(0.008 in)
Extension shims 5
26 mm
(1.020 in)
0.203 mm
(0.008 in)
Piston slit 4
Compression
shims
8
30 mm
(1.180 in)
0.152 mm
(0.006 in)
Spacer 2
15 mm
(0.590)
0.114 mm
(0.0045 in)
A06F12A
529 0265 00