Snowmobile Arctic Cat (2004 year). Manual - part 104

8-16

AM064D

FC084

5. On the 6-post style, remove the cam arm pin lock

nuts; then using a small torch, apply heat to the
cam arm set screws to loosen the Loctite used in
assembly.

FS001

„ NOTE: Heat must be applied to the cam arm in
order to remove the set screws.

6. On the 6-post style after the lock nuts and set

screws have been removed, remove the cam arm
pins one at a time noting the position of the
alignment notches for assembly purposes.
Account for the O-rings.

0739-038

7. On the 6-post style using a suitable driving tool,

remove the cam arm pin bushings from the
movable sheave.

FS005

8. Using the Thin Wall Deep Socket (p/n 0644-138),

remove the spider retainer nut.

AM065D

! CAUTION

Care must be taken not to damage the inner bore
of the movable sheave.

8-17

8

FC085

9. Using a small torch, heat the threaded area of the

spider. Place the Spider Removal Tool (p/n 0644-
085) over the heated spider and break spider loose
by turning it counterclockwise.

AM067D

FC086

„ NOTE: Applying heat to the spider threaded area
will aid in clutch disassembly. The heat will loosen
the Loctite used during assembly.

10. Remove the drive clutch from the clutch holder

using the clutch puller and the same procedure as
pulling the drive clutch from the crankshaft.

11. Remove the spider, spacer washers, and movable

sheave.

12. Using a pair of pliers, remove the six spider

buttons.

AM070D

13. Using a punch, push each pin from the roller.

Account for the roller washers (one on each side of
each roller).

AM071D

14. On the 9-post style, remove the three cam arm pins

and lock nuts securing the cam arms to the
movable sheave; then remove each cam arm and
account for the bushings and the washers.

733-452B

KEY

1. Lock Nut
2. Cam Arm
3. Bushing
4. Washer
5. Pin

8-18

CLEANING AND INSPECTING

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

1. Using parts-cleaning solvent, wash grease, dirt,

and foreign matter off all components; dry with
compressed air.

2. Remove any drive belt dust accumulation from the

stationary sheave, movable sheave, and bushings
using parts-cleaning solvent only.

3. Inspect stationary sheave, movable sheave, spider,

and cover for cracks or imperfections in the
casting.

4. Inspect the cam arm pins for wear or bends.

5. Inspect the bushing in the cover for wear, damage,

or cracks. Measure the inside diameter of the
bushing and the outside diameter of the stationary
sheave hub. The difference (clearance) must be
less than 0.20 mm (0.008 in.). If cover bushing is
not within specifications, replace the cover.

AM078D

FC087

AM077D

6. Inspect the bushing in the movable sheave for

wear, damage, or cracks. Measure the inside
diameter of the bushing and the outside diameter
of the stationary sheave hub. The difference
(clearance) must be less than 0.20 mm (0.008 in.).
If movable sheave bushing is not within
specifications, replace the movable sheave.

AM023D

AM079D

7. Inspect the spring for proper compression rate

qualities (see Drive System Components page).

8. On the 9-post style, inspect the cam arms for any

uneven wear pattern or damage to the bushings.

9. Inspect all threaded areas for any cracked or

stripped threads.

10. Inspect rollers for damage or wear.

11. Inspect the roller bushings for damage or fraying.

! CAUTION

Do not use steel wool or a wire brush to clean
components having a bushing; damage to the
bushing will result.

8-19

8

12. Inspect the stationary sheave and shaft for damage

or wear.

ASSEMBLING

0736-321

0738-469

1. On the 9-post style, place a cam arm with bushing

and washers into position on the movable sheave;
then secure with the cam arm pin and lock nut.
Carefully tighten the lock nut until it contacts the
cam arm pin shoulder; then tighten an additional 1/
8 turn. Repeat procedure on the other two cam
arms making sure the head of each pin is
positioned toward the direction of drive clutch
rotation.

„ NOTE: The drive clutch rotates counterclock-
wise.

733-452B

2. Place a roller and washers (one on each side of the

roller) into position on the spider; then install the
pin. Repeat procedure on the other two rollers.

AM071D

3. Place the spider buttons into position; then tap into

place until firmly seated.

„ NOTE: If a spider button does not fit tightly, it
must be replaced.

4. Align the spider and movable sheave timing

marks.

5. Place the movable sheave, spacer washers, and

spider into position on the stationary sheave hub.
Make sure all threads are clean and free of oily
residue. Apply green Loctite #620 to the entire
threaded area of the shaft and thread the spider
onto the shaft. Tighten the spider using the spider
removal tool to 34.5 kg-m (250 ft-lb).

„ NOTE: Allow the Loctite to cure at room temper-
ature for 24 hours.

! WARNING

Never reuse the lock nuts on the cam arm pins.

KEY

1. Stationary 

Sheave

2. Movable Sheave
3. Cover
4. Retainer Nut

5. Pin
6. Lock Nut
7. Cam Arm
8. Bushing
9. Washer

10. Spacer Washer
11. Spider Assy
12. Lock Washer
13. Machine Screw
14. Spring

KEY

1. Stationary 

Sheave

2. Movable Sheave
3. Bearing
4. Pin
5. O-Ring

6. Cam Arm
7. Set Screw
8. Lock Nut
9. Spacer Washer

10. Spider Assy

11. Spring
12. Nut
13. Cover
14. Lock Washer
15. Machine Screw

! CAUTION

Failure to align the spider and movable sheave
timing marks will cause drive clutch to be out of
balance resulting in clutch and crankshaft
damage.

KEY

1. Lock Nut
2. Cam Arm
3. Bushing
4. Washer
5. Pin