Snowmobile Arctic Cat 2-Stroke (2007 year). Manual - part 126

9-17

9

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

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. Account for a

flanged axle, flared bushing, idler spacer collar,

and lock nuts.

MS064

4. Remove the idler wheel.

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

MS011

5. Remove the cap screw and flat washer securing

the front outer idler wheel to the mounting block

and remove the idler wheel.

MS002B

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.

! WARNING

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

9-18

MS013A

MS014

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

MS145

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

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).

MS005

! CAUTION

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

9-19

9

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, lock nut, and washer.

Tighten to specifications.

MS014

MS015

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

MS074

MS072A

4. Install the idler spacer collar onto the idler arm.

MS064

5. Place the flared bushings with a thin flat washer

through the notched side of the offset pivot idler

arm assembly.

„NOTE: If the flared bushings in the offset pivot
idler arm is loose, it must be cleaned and green
Loctite #609 must be applied to it prior to installa-
tion.

6. Align the marks on the idler arm to the centerline

of the offset pivot idler arm assembly. Secure the

offset pivot idler arm to the idler arm with cap

screws and lock nuts. Tighten to specifications.

! 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.

9-20

MS146A

„NOTE: When tightening the pivot idler arm lock
nuts, tighten the lower lock nut first or binding may
occur.

MS019B

Rear Axle and

Idler Wheels

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

DISASSEMBLING

1. Remove the cap screw and large flat washer secur-

ing the outer rear idler wheel. Remove the outer

idler wheel from the shaft.

FC194

„NOTE: The large flat side of the wheel insert is
positioned next to the inner plastic adjuster bush-
ing. The idler wheel must be installed with the
wheel insert properly positioned.

2. Loosen the track adjusting bolts. Slide the outer

adjuster bushings off the axle.

MS020

MS021

3. Carefully slide the shaft out from the inner idler

wheels and note the position of the spacers and

washers.

MS022

CLEANING AND INSPECTING

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

1. Clean the bearings with a clean cloth.