Snowmobile Arctic Cat (2008 year). Manual - part 115

7-20

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.

2. Inspect all idler wheel inserts (inner and outer) for

any cracks.

3. Inspect the outer rubber portion of the idler wheels

for cracks and poor bonding.

4. Inspect the plastic insert of each idler wheel for

cracks.

5. Inspect the shaft for wear and damaged threads.

6. Inspect all idler wheel bearings. Turn each bearing

(by hand) and if any roughness or binding is noted,

replace the bearing.

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 or suitable driving tool,

remove the bearing from 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

! CAUTION

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

7-21

7

ASSEMBLING

1. In order from the right-hand side, slide the axle

through the slide rail axle slot; then place a bush-

ing, inner idler wheel with insert (if applicable),

and long spacer with a flat washer on the axle.

Slide the axle through the opposite slide rail axle

slot. Place the plastic adjuster bushings on the axle

(on the outside of each axle slot).

MS022

„NOTE: Make sure the slot with the cap screw
hole in the adjuster bushing is aligned directly
with the adjusting bolt.

A

MS058A

2. Place the outer idler wheels on the axle (with the

large flat of the insert directed inward) and secure

with two cap screws (coated with blue Loctite

#243) and large flat washers. Tighten cap screws

only until snug.

„NOTE: It is advisable to tighten the rear idler
wheel axle only until snug until the skid frame has
been installed and track tension has been
adjusted; then the axle assembly must be tight-
ened to 40 ft-lb.

MS212

3. 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.

4. Adjust track alignment (see Track Alignment in

this sub-section).

5. Adjust track tension deflection (see Track Tension

in this sub-section).

Idler Arm/Rear Arm

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

DISASSEMBLING

1. Remove the rear upper idler wheels and springs

(see Rear Upper Idler Wheels/Rear Springs in this

sub-section).

MS074

2. Remove the cap screw and lock nut securing the

upper shock eyelet to the idler arm. Account for a

spacer, lock nut, and bushings.

7-22

MS075A

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.

7-23

7

MS029A

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 or suitable driving tool,

remove the bearing from 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.