Snowmobile Arctic Cat 2-Stroke (2007 year). Manual - part 135

9-53

9

AG553D

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

MS076

3. Remove the cap screw and lock nut securing the

upper shock links to the idler arm. Account for a

lock nut, spacer, and axle links.

MS081

MS031

4. Remove the cap screw, washer, and lock nut secur-

ing the rear arm to the slide rail. Account for the

serrated axles and axle tube.

MS078A

MS028

„NOTE: At this point on the Bearcat 570, remove
the rear arm limiter strap.

5. Remove the cap screw and lock nut securing the

rear arm to the idler arm. Account for the alumi-

num axle and bushing assemblies.

MS029A

9-54

MS030

CLEANING AND INSPECTING

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

1. Closely inspect the rear arm/idler arm tubing and

brackets for cracks or unusual bends.

2. Clean the bearings with a clean cloth.

3. Inspect each idler wheel for cracks or damage.

4. Inspect the bushings (located in the arm pivot

area) for wear or damage.

5. Inspect all welds and the tubing of the upper arm

for cracks or unusual bends.

6. Inspect the two adjusting cams for damage.

7. 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

ASSEMBLING

1. Install the rear arm onto the idler arm with an alu-

minum axle, bushing assemblies, two cap screws

(coated with blue Loctite #243), and a lock nut.

Tighten only until snug.

! CAUTION

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

9-55

9

MS030

MS029A

„NOTE: At this point on the Bearcat 570, install the
rear arm and the idler arm; then secure with the
cap screws, flat washers, and lock nuts. Tighten to
1.4 kg-m (10 ft-lb).

2. Place the rear arm assembly into position. Secure

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

specifications.

MS079

3. Place a support beneath the rear arm; then tighten

the cap screws (from step 1) to specifications.

MS080

4. Position the shock links in the appropriate holes of

the idler arm brackets (see Chassis and Skid Frame

Mounting Locations in this section). Place a

spacer between the center of the brackets. Insert

the axle links into the upper shock link eyelets;

then insert the cap screw through the eyelets.

Secure with a cap screw, washer, and lock nut.

Tighten securely.

MS031

MS081

5. Place the upper shock eyelet with bushings

between the idler arm brackets making sure the

spacer is properly positioned between the brack-

ets. Secure with a cap screw and lock nut. Tighten

securely.

9-56

MS075A

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

6. Grease the idler arm and rear arm grease fittings

with a low-temperature grease.

7. Install the rear upper idler wheels, rear springs,

and offset pivot idler (see Rear Upper Idler

Wheels/Rear Springs in this sub-section).

8. Install the skid frame (see Installing Skid Frame in

this sub-section).

„NOTE: It is advisable to install the rear arm
springs onto the adjuster blocks after the skid
frame has been installed.

Front Arm/Front Shock 

Absorber/Front Inner 

Idler Wheels

„NOTE: The skid frame must be removed for this
procedure (see Removing Skid Frame in this sub-
section), and the rear springs must be removed
from the adjusting cams.

REMOVING

1. Remove the lower cap screws and lock nuts secur-

ing the limiter straps to the rail support. Account

for flat washers.

MS082A

2. Remove the cap screw and lock nut securing the

upper front shock absorber eyelet to the front arm.

Pull the shock eyelet free of the bracket. Account

for a serrated axle.

MS039A

3. Remove the cap screw and lock nut securing the

front arm to the front arm mounting brackets.

MS083A

4. Remove the front arm and account for the serrated

axles, bushings, and an axle tube.

MS036

5. Remove the cap screw and lock nut securing the

front inner idler wheels to the slide rail.