Snowmobile Arctic Cat (2008 year). Manual - part 116

7-24

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 10 ft-lb.

2. Place the rear arm assembly into position. Secure

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

40 ft-lb.

MS079

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

the cap screws (from step 1) to 40 ft-lb.

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.

7-25

7

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 pivot arm (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.

7-26

MS084A

6. From one side, tap the idler assembly rearward

until the mounting blocks clear the slide rail; then

remove the assembly.

MS085

7. Remove the mounting blocks and slide the axle

out of the shock bracket; then remove the cap

screw and lock nut securing the shock absorber to

the bracket.

MS086A

MS042A

INSPECTING

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

1. Inspect all front arm weldments for cracks or

unusual bends.

2. Closely inspect all tubing for cracks or unusual

bends.

3. Inspect the bearings, bushings, front arm spacers,

and mounting blocks for wear or damage.

4. Inspect the shock absorber for any signs of oil

leakage especially at the point where the shock

shaft enters the shock body.

5. Inspect the shock absorber eyelet welds (at each

end) for any cracks, signs of separation, or for

unthreading.

INSTALLING

1. Secure the shock absorber to the shock bracket

with the cap screw and lock nut. Tighten securely.

MS086A

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

2. Apply grease to the axle; then install the axle into

the shock bracket. Install the mounting blocks to

the axle.

7-27

7

MS042A

3. Place the idler wheel assembly into position on the

skid frame making sure the mounting blocks are

properly positioned. Secure with the cap screw,

washer, and a new lock nut. Tighten only until

snug.

MS085

4. Position the front arm into the mounting brackets.

Secure with cap screws and lock nuts. Tighten to

40 ft-lb.

MS087

„NOTE: At this point, tighten the lock nut (from
step 3) to 40 ft-lb.

MS088

5. Secure the upper shock eyelet and serrated axle in

the mounting hole of the front arm. Secure with a

cap screw and lock nut. Tighten securely.

MS039A

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

6. Secure the limiter straps to the rail supports with

cap screws, washers, and lock nuts. Tighten to 10

ft-lb.

MS082A

7. 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.