Snowmobile Polaris EDGE / WIDETRAK (2007-2012 year). Manual - part 58

8.34

Steering and Suspension Systems

9923396 - 2007-2012 EDGE/Widetrak LX Service Manual

Rebuildable Front Track Shock Specifications

Front Track Shock (FTS) Valving

NOTE: Valve shim stacks listed as they would appear
on the shaft when shock rod is locked in a table vise
(eyelet down, threaded end up).

Rebuildable Front Track Shocks

SHOCK PN

BRAND

Extended

Length (in)

Collapsed

Length (in)

Stroke (in)

Shock

Rod (in)

IFP Depth (in)

PSI

7041975

Ryde FX

12.1

8.6

3.5

.49

4.61

200

Front Track Shocks

SHOCK

7041975

REB

.8 x .012
.9 x .012
1.0 x .010
1.1 x .010
1.25 x .008

Piston Orifice

.070

COMPRESSION

1.3 x .008
1.0 x .006
1.3 x .008
1.1 x .010
1.0 x .008
.9 x .008
.8 x .008

8.35

Steering and Suspension Systems

9923396 - 2007-2012 EDGE/Widetrak LX Service Manual

RYDE FX MONO-TUBE SHOCK

DISASSEMBLY

Procedures for the proper disassembly and assembly of
Ryde FX gas charged IFP and emulsion mono-tube shock
absorbers.

Remove the shock(s) from the vehicle.

Before unscrewing pre-load springs, measure the
compressed length of the installed spring and mark
position for reinstallation.

If the shock incorporates a spring, remove the spring
and all collateral retainers.

Wash the shock body in parts cleaner; then dry with
compressed air to remove sand and dirt.

Remove bearing, sleeve and/or bushings from lower
shock mount eyelet. Secure the lower mount of the
shock in a vise. The use of soft jaws is recommend to
prevent damage or marks to the shock.

Remove the small button head screw from the
pressure valve assembly.

Depressurize the shock.

Internal Floating Piston Shocks, using a slotted
screwdriver, loosen the pressure valve assembly
counter-clockwise two full revolutions allowing the
gas pressure to fully escape past the pressure valve
assembly O-ring.

Emulsion Shocks: With the shock inverted and the
piston rod fully extended, secure the lower mount of
the shock in a vise. Allow a couple of minutes for the
gas pressure to separate from the oil and rise to the
top. Using a rag as a shield to prevent spraying gas
and oil; place rag over top the pressure valve
assembly and slowly loosen the valve assembly with
slotted screw driver three full revolutions, allowing all
the gas pressure to escape past the pressure valve
assembly O-ring.

10. Allow all the gas pressure to escape before

proceeding with the removal of the pressure valve
assembly. Pressurized gas and shock oil could eject
the valve assembly from the cylinder resulting in
bodily injury.

11. Using a slotted screwdriver, remove the pressure

valve assembly from the lower end mount. Account for
an O-ring.

12. Using an adjustable face spanner (PN PS45262), fully

loosen and remove cylinder head assembly.

13. Pour the oil out of the shock body. Discard old oil into

an approved storage container and dispose
appropriately. Never reuse damper oil during shock
rebuild.

14. Using the I.F.P extraction tool thread the tool into the

I.F.P and pull upwards, removing the I.F.P from the
shock body. Account for wear band and an O-ring.
Note: Not applicable for emulsion shock

15. Clean the inside of the shock body using clean parts-

cleaning solvent and blow dry using compressed air.

16. Place the shock piston rod upper mount in bench vise,

begin piston and valve removal. Arrange parts
removed in the sequence of disassembly. The piston
should have the flat slots facing the nut end (as
highlighted in black).

17. Items to inspect: Piston rod for straightness, nicks or

burrs. Cylinder Head Assembly / DU Bearing clean,
inspect, or replace. Inside of shock body for
scratches, burrs or excessive wear. Teflon piston and
I.F.P wear band for cuts, chipped or nicked edges, or

CAUTION

EFORE

SERVICING

GAS

SHOCK

IMPORTANT

THAT

ALL

THE

GAS

PRESSURE

DISCHARGED

FROM

THE

UNIT

EFER

THE

INSTRUCTIONS

LISTED

BELOW

FOR

THE

PROPER

PROCEDURE

DISCHARGING

THE

GAS

PRES

SURE

FROM

SHOCK

. P

ROTECTIVE

EYE

WEAR

SHOULD

WORN

AVOID

RISK

INJURY

WHILE

SERVICING

GAS

CHARGED

MONO

TUBE

SHOCKS

CAUTION

HEN

REMOVING

THE

SPRING

FROM

SHOCK

THAT

UTILIZ

FIXED

LOWER

RETAINER

;

THE

USE

PROPER

SPRING

COMPRESSOR

SHOULD

USED

AVOID

RISK

BODILY

INJURY

WARNING

HEN

USING

COMPRESSED

AIR

DRY

COMPONENTS

PROTECTIVE

EYE

WEAR

SHOULD

WORN

AVOID

RISK

INJURY

CAUTION

IMPORTANT

THAT

THE

GAS

SHOCK

RETAINED

THE

VISE

THE

LOWER

MOUNT

. A

OTHER

METHOD

SECURING

THE

CHOCK

BODY

DURING

THESE

PRO

CEDURES

MAY

DEFORM

THE

SHOCK

BODY

CYLINDER

WARNING

ITROGEN

GAS

UNDER

EXTREME

PRESSURE

USE

CAUTION

WHEN

RELEASING

NITROGEN

GAS

FROM

SHOCK

. P

ROTECTIVE

EYE

WEAR

SHOULD

WORN

AVOID

RISK

INJURY

8.36

Steering and Suspension Systems

9923396 - 2007-2012 EDGE/Widetrak LX Service Manual

excessive wear. O-rings for nicks, cuts, or cracks. Cap
and rod seals for nicks, cuts or cracks. Valve discs for
kinks or waves. Compression bumpers (ski shocks
only) for chipping, cracking or missing. Should any of
these items be in question replacement is
recommended.

RYDE FX MONO-TUBE SHOCK ASSEMBLY

Place the piston rod upper mount into the vise.
Reassemble damper rod assembly in the reverse
order of disassembly. Special attention should be paid
the order of the Rebound and Compression disc
(shim) stacks, ensuring that they are in the same order
prior to disassembly. Tighten the lock nut to 15-20 ft-
lb. of torque. DO NOT OVER-TORQUE. If excessive
torque is applied, damage to the piston and valves will
occur.

Secure the shock body by its lower mount in vise. The
use of soft jaws is recommend to prevent damage or
marks to the shock. It is important that the gas shock
be retained in the vice by the lower mount. Any other
method of securing the shock body during these
procedures may deform the shock body cylinder.

NOTE: The next points on IFP are not applicable for
emulsion shocks. Proceed to assembly of the
pressure valve.

Thread the positioning head onto the I.F.P locator tool
and adjust the top of the value indicator to the
appropriate measurement. Depending on which
shock absorber is being worked on, adjust the piston
location tool to the specified depth indicated in the
shock specification chart.

Apply a thin film of oil onto the floating wear band and
O-ring and install the floating piston into the top of the
shock body, positioning it below the counter-bore.

Using the tool as a handle, push the floating piston
down into the shock body, being careful not to
damage I.F.P wear band and O-ring, until the value
indicator knob comes in contact with the shock body.
The piston should now be located correctly.

Screw the pressure valve assembly into the valve port
by hand with a slotted head screwdriver; and tighten
to 100-110 in.lb of torque.

Fill the shock body with shock oil. Internal Floating
Piston Shocks: Fill the shock body with shock oil to the
bottom of the thread within the cylinder. Emulsion
Shocks: Fill shock body with 110cc's of oil. This will
allow for the required air space to properly gas charge
the shock with nitrogen gas.

NOTE: After filling the shock body with oil, allow a
couple of minutes for all air bubbles to rise to the top.

With the cylinder head assembly pushed down
against the piston, carefully, insert the piston rod and
assembly into the cylinder; Slightly oscillating the
piston rod to allow piston to enter shock body bore. A
light coating of oil on the piston wear band will ease
installation.

Slowly push the piston rod and assembly into shock
body until the cylinder head assembly bottoms on the
cylinder counterbore. Slight up and down movement
may be required to allow all air to pass through piston
assembly.

10. During installation, some shock oil will overflow. Wrap

a shop cloth around shock body to catch possible oil
overflow. Fast installation of the piston rod and
assembly may displace the floating piston from its
original position. This must not occur if the damper is
expected to perform as designed.

11. Using an open face spanner wrench tighten cylinder

head securely into the shock cylinder.

12. Pressurize the shock, through the pressure valve,

with nitrogen gas to the specified pressure.

13. If using RydeFX inflation tool Refer to Procedures for

use of replaceable inflation needle instruction manual
found in the RydeFX inflation tool case.

14. After being compressed, the piston rod should fully

extend from the shock body once the shock has been
pressurized.

15. Install the small button head screw in the pressure

valve assembly and tighten securely.

16. Reinstall sleeve and bushings in lower shock mount.

8.37

Steering and Suspension Systems

9923396 - 2007-2012 EDGE/Widetrak LX Service Manual

TROUBLESHOOTING

Suspension Set-Up

PROBLEM

SOLUTION

Rear suspension bottoms too easily.

Increase rear shock compression valving by turning screw
clockwise.
Increase torsion spring preload.
Install stiffer torsion springs.

Rides too stiff in rear.

Check for binding suspension shafts and grease all pivot points.
Decrease torsion spring preload adjustments.
Decrease rear shock compression valving by turning screw
counterclockwise.

Setting up for deep snow operation.

Change worn rail slides.
Increase front limiter strap length
Based on rider preference, RRSS may be removed to increase
weight transfer

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