Snowmobile Arctic Cat 2-Stroke (2007 year). Manual - part 143

9-85

9

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 each idler wheel for cracks or damage.

3. Inspect the bushings (located in the arm pivot

area) for wear or damage.

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

for cracks or unusual bends.

5. Inspect the two adjusting cams for damage.

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

check for binding or roughness.

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

A. Remove the wheel 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

ASSEMBLING

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

minum axle, bushing assemblies, and two cap

screws (coated with blue Loctite #243). Tighten

only until snug.

MS029A

2. Place the rear arm assembly into position between

the slide rails. Secure with a cap screw and lock

nut. Tighten to specifications.

MS157

3. With the rear arm secured to the slide rails, tighten

the two cap screws (from step 1) to specifications.

! CAUTION

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

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MS159

„NOTE: If the rear arm limiter was loosened (after
step 4 of disassembling), treat the threads of the
cap screw with blue Loctite #243 and tighten to
specifications.

MS158

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; then

place a flat washer on the cap screw. Insert the

axle links into the upper shock link eyelets; then

insert the cap screw through the eyelets. Secure

with a cap screw and lock nut. Tighten securely.

MS031

MS026

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.

MS160

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

739-992A

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

! CAUTION

Make certain that the shock pivot assembly is prop-
erly positioned prior to securing the shock absorber
to the idler arm.

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9

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).

Front Arm/

Front Arm Brackets/

Front Shock Absorber

„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.

MS161A

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.

MS162A

3. Remove the cap screws and lock nuts securing the

front arm to the front arm mounting brackets.

MS163A

MS992A

4. Remove the front arm and account for the two

front arm spacers.

MS164

5. Remove the cap screws securing the front outer

idler wheels to the idler wheel mounting block.

Account for lock nuts, cap screws, shim washers

(if applicable), and flat washers.

MS133A

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

the front shock axle; then from one side, tap the

assembly rearward far enough for the axle assem-

bly to clear the slide rails. Account for an axle, two

spacers, and two shim washers.

„NOTE: It is advisable to loosen the front rail sup-
port cap screws enough to gain clearance to
remove the front shock axle.

MS165A

MS166

MS167

7. Remove the lock nut and cap screw securing the

rear shock pivot/inner idler wheel assembly to the

slide rail.

MS169B

8. Move the assembly rearward far enough to gain

access to the front arm mounting bracket lock

nuts; then remove the cap screws and lock nuts

securing the brackets to the slide rails.

MS169A

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; then inspect the front arm mount-

ing brackets for cracks and for elongated holes.

2. Closely inspect all tubing for cracks or unusual

bends.

3. Inspect the bearings, bushings, and front arm spac-

ers 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.

6. Inspect the shock absorber and reservoir hoses (on

models with remote adjuster) for damage.