Snowmobile Arctic Cat 2-Stroke (2007 year). Manual - part 141

9-77

9

MS138

CLEANING AND INSPECTING

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

1. Clean the bearing with a clean cloth.

2. Inspect each idler wheel and plastic hub for cracks

or damage.

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

inspect for binding or roughness.

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

A. Remove the 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

INSTALLING

1. Secure the mounting block on the slide rail with a

cap screw and lock nut. Tighten to specifications.

MS139

„NOTE: For proper alignment, it is advisable to
install an idler wheel cap screw into the top mount-
ing block hole prior to tightening.

! CAUTION

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

9-78

MS140A

2. Place the idler wheel into position against the

mounting block making sure there is a flat washer

on the cap screw. Tighten to specifications.

MS141

Rear Upper Idler 

Wheels/Rear Springs

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

REMOVING

1. Using the Rear Suspension Spring Tool (p/n 0144-

311), remove the spring from the adjusting cam.

AG624DA

„NOTE: Steps 2 and 3 are for the Crossfire Mod-
els.

2. Mark the offset pivot idler and the idler arm for

assembly purposes.

MS142

3. Remove the cap screws securing the offset pivot

idler arm assembly to the idler arm; then remove

the offset pivot arm idler assembly.

MS064

„NOTE: Account for a flanged axle, flared bush-
ing, idler spacer collar, and lock nuts.

4. Remove the idler wheel.

„NOTE: Use Idler Wheel Puller Kit (p/n 0644-122)
to remove the wheel.

! WARNING

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

9-79

9

MS143

5. Remove the cap screw and flat washer securing

the front outer idler wheel to the mounting block;

then remove the idler wheel.

MS133A

6. Remove the cap screw, flat washer, and lock nut

securing the spring slide to the slide rail. Account

for the spring slide and all mounting hardware.

MS144A

MS014

7. Remove the spring and sleeve from the idler arm.

MS145

„NOTE: Use the same procedure for the other
side.

CLEANING AND INSPECTING

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

1. Clean the bearing with a clean cloth.

2. Inspect each idler wheel and plastic hub for cracks

or damage.

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

inspect for binding or roughness.

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

A. Remove the 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

! CAUTION

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

9-80

D. Install the snap ring making sure the “sharp

side” is directed away from the bearing.

MS007A

E. Install the insert (if applicable).

MS008

5. Inspect the spring, spring slide, sleeve, washers,

slide block insert, and shaft area for wear.

6. Inspect the adjusting cams and arms for cracks.

INSTALLING

1. Slide the sleeve and spring onto the idler arm.

MS145

2. Place the spring slide and slide block (with spring

in slide block) into position on the slide rail.

Secure with a cap screw and washer. Tighten to

specifications.

MS014

MS015

3. Install the rear upper idler wheel on the idler arm.

AG545D

MS072A

! CAUTION

When driving the idler wheel onto the idler arm, use
a tool to contact the inside race of the bearing or
damage to the wheel or bearing may occur.