Snowmobile Arctic Cat 2-Stroke (2007 year). Manual - part 144

9-89

9

INSTALLING

1. Install the front arm mounting brackets to the slide

rails. Secure with cap screws and lock nuts tight-

ened to specifications.

MS170

2. Move the rear shock pivot/inner idler wheel

assembly to the appropriate mounting location.

Secure with cap screws and lock nuts tightened to

specifications.

MS171

MS993

3. Install the axle into the lower shock eyelet bushing

assembly; then install the two spacers and the two

shim washers.

FC178

4. Place the front arm shock axle assembly into posi-

tion on the skid frame making sure the spacers and

washers are properly positioned. Secure with the

cap screw, washer, and a new lock nut. Tighten to

specifications.

„NOTE: If the front rail support cap screws were
loosened (after step 6 of removing), treat the
threads with blue Loctite #243 and tighten to spec-
ifications.

MS172

5. Position the front arm with spacers into the mount-

ing brackets. Secure with cap screws and lock

nuts. Tighten to specifications.

MS173

9-90

MS991

6. Secure the upper shock eyelet and serrated axle in

the appropriate mounting hole of the front arm

(standard arm mounting position). Secure with a

cap screw and lock nut. Tighten securely.

MS174

„NOTE: Do not over-tighten the shock absorber
cap screw as the shock eyelet must be free to
pivot.

7. Secure the limiter straps with cap screws, washers,

and lock nuts. Tighten to specifications.

MS161A

8. Secure the front outer idler wheels to the idler

wheel mounting blocks with cap screws, flat

washers, shim washers (if applicable), axles, and

lock nuts. Tighten to specifications.

MS133A

Rear Shock Absorber 

and Shock Links/

Front Inner Idler Wheel 

Assembly

„NOTE: Before removing the skid frame by using
the Rear Suspension Spring Tool (p/n 0144-311),
remove the spring from the adjusting cam.

„NOTE: The skid frame must be removed for this
procedure (see Removing Skid Frame in this sub-
section).

DISASSEMBLING

„NOTE: When removing center components from
the skid frame, it is advisable to loosen all cap
screws/lock nuts from one side of the slide rail to
make removing easier.

1. Disengage the shock absorber at the upper eyelet

and remove the shock absorber. Account for a

sleeve, cap screw, lock nut, and bushings.

MS175A

! WARNING

Care must be taken when removing the spring from
the adjusting cam or damage or injury could result.

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9

AG665D

2. Remove the cap screw and lock nut securing the

shock rod links to the idler arm. Account for a

spacer and two axle links.

MS176A

„NOTE: Mark the hole that the upper shock links
are mounted in for assembling purposes.

MS025

3. Remove the cap screw and lock nut securing the

front inner idler wheel assembly to the slide rails;

then from one side, tap the assembly rearward far

enough to clear the slide rails and mounting brack-

ets. Remove the assembly.

MS178

„NOTE: To access the front inner idler wheel
assembly, the front outer idler wheels must be
removed.

MS183A

4. Remove the axle from the shock pivot. Account

for an axle, three spacers, and four washers.

MS179

„NOTE: Lay components out in order as they are
removed.

5. With the pivot assembly removed, remove the cap

screw and lock nut securing the lower shock eyelet

and links to the pivot bracket. Account for a spacer

and two link axles.

9-92

MS180

MS181

CLEANING AND INSPECTING

„NOTE: Whenever a part is worn excessively,
cracked, or damaged in any way, replacement is
necessary.

1. Clean shock pivot and idler wheel axle in part-

cleaning solvent. Dry with compressed air.

2. Clean the idler wheel bearings with a clean cloth.

3. Closely inspect the torque link arm and axles for

wear, bends, or damaged splines at either end.

4. Inspect the idler wheels for signs of cracking,

wear, or outer rubber separation from plastic

wheel.

5. Rotate the idler wheel bearings (by hand) and

inspect for any signs of binding or roughness.

6. If a bearing must be replaced, use this procedure.

A. Remove wheel insert (if applicable) and the

snap ring.

B. Using a hydraulic press, press the bearing out

the inside of the wheel.

C. Press the new bearing (on its outer race) into

the idler wheel.

MS006A

D. Install the snap ring making sure the “sharp

side” is directed away from the bearing.

MS007A

E. Install the insert (if applicable).

MS008

7. Inspect the shock absorber for any signs of oil

leakage especially at the point where the shock

shaft enters the shock body.

8. Inspect the rubber shock bushings located in the

shock absorber eyelets for cracks or deterioration.

9. Inspect the shock absorber eyelet welds (at each

end) for any cracks or signs of separation.

! WARNING

Always wear an approved pair of safety glasses
when using compressed air.

! CAUTION

Do not remove the bearing unless it is absolutely
necessary. The bearing will be damaged during
removal.