Snowmobile Arctic Cat (2007 year). Instruction - part 82

 

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Snowmobile Arctic Cat (2007 year). Instruction - part 82

 

 

8-31

8

CORRECTING OFFSET

1. To correct offset, the driven pulley must be

moved laterally on the output shaft. Remove the

cap screw and washers securing the driven pul-

ley; then remove the driven pulley.

„ NOTE: If the driven pulley is tight on the input
shaft, pull the driven pulley off using the Driven
Pulley Puller (p/n 0644-469).

2. To move the driven pulley inward on the shaft,

remove washer(s) as required from behind the

pulley.

3. To move the driven pulley outward on the shaft,

add alignment washer(s) as required behind the

driven pulley.

4. Install the driven pulley and secure with a cap

screw and washers. Tighten the cap screw to

specifications.

CHECKING PARALLELISM

1. Check parallelism of the drive clutch/driven pul-

ley using the alignment bar and reference points

X and Y with the alignment bar placed between

the sheaves of the driven pulley. Using a cali-

pers or a machinist’s scale, measure X and Y

from the back side of the alignment bar. Mea-

surement Y must be 1.5 mm ± 1.0 mm (0.060 in.

± 0.040 in.) more than measurement X, but Y

must not exceed measurement X by more than

2.54 mm (0.100 in.).

0742-065

„ NOTE: The offset must be correct before check-
ing parallelism.

2. If parallelism is not within specifications, the

parallelism must be corrected.

DRIVE BELT DEFLECTION

Drive belt length, condition, and deflection are all

important for peak performance. To check and

adjust drive belt deflection, use the following proce-

dure.

1. Turn the engine off; then open the access panel.

2. Make sure the drive belt is sitting at the top of

the driven pulley sheaves.

3. Place a straightedge on top of the drive belt. The

straightedge should reach from the drive clutch

to the top of the driven pulley.

4. Using a stiff ruler centered between the drive

clutch and driven pulley, push down on the drive

belt just enough to remove all slack. Note the

amount of deflection on the ruler at the bottom

of the straightedge. The deflection should be at

31 mm (1 1/4 in.).

741-464A

„ NOTE: Push down on the belt with the ruler only
until the bottom of the belt flexes upward; then
read the amount of deflection.

5. To correct drive belt deflection, remove the

sheave adjuster from the pulley, remove or add

shim washers to the adjuster, and install the

adjuster.

„ NOTE: Adding shim washers will decrease belt
deflection; removing shim washers will increase
belt deflection.

„ NOTE: If the drive belt deflection is above speci-
fications, the snowmobile will bog and lack power
at clutch engagement. For good performance,
proper belt deflection is critical.

6. Close the access panel.

! CAUTION

Do not allow the driven pulley to “float” on the out-
put shaft. Damage to the driven pulley will occur.

8-32

Drive Train/Brake Disc

(Bearcat Wide Track/Panther 

660/T660) 

DISASSEMBLING

1. Remove the chain-case drain plug located on the

lower back side of the chain case inside the tun-

nel and drain the chain case lubricant.

2. Open the belt guard.

3. Remove the drive belt.

„ NOTE: For removing drive belt on models with
the ACT Roller Driven Pulley, see Removing/
Installing Drive Belt (ACT Roller Driven Pulley) in
this section.

 4. Remove the cap screw and washer securing the

driven pulley; then account for and note the

position of any alignment washers.

SC013D

AO372

5. Slide the driven pulley off the driven shaft; then

remove the driven pulley from the engine com-

partment. Account for the key, stub shaft, and

alignment washers.

„ NOTE: On the Bearcat W/T non-turbo, Panther
660 models, and T660 Touring if the driven pulley
is tight on the driven shaft, pull the driven pulley
off using the Driven Pulley Puller (p/n 0744-023).
On the Turbo models, use Driven Pulley Puller (p/n
0644-469).

AF120D

6. Disconnect the shift linkage from the arm on

chain case.

7. Remove the cap screw (A) from the center of the

chain case; then remove the remaining cap

screws securing the chain case cover. Remove

the cover by pulling outward and lifting up so

the shift fork clears the large inner washer.

741-158A

8. Remove the screw from the chain adjuster hous-

ing and install an 8-32 set screw to lock the

chain adjuster in position.

AF426

8-33

8

9. Remove the shim washer from the idler sprocket.

AF436

10. Remove the outer idler sprocket from the shaft.

AF437

11. Slide the small rubber alignment pin from the

face of the inner idler sprocket and place in safe

location until assembly.

AF439

12. Remove the lock nut securing the top sprocket.

AF432

13. Remove the spring washer in front of the top

sprocket.

AF444

14. Set the brake lever lock. Remove the cap screw

and large washer securing the bottom sprocket.

„ NOTE: The bottom sprocket cap screw and
washer are spring loaded.

AF428

15. Remove the reverse gear.

8-34

AF442

16. Remove the top sprocket, chain, and idler gear.

Account for one shim washer located behind the

idler gear.

AF433

„ NOTE: If the chain is too tight and will not allow
the top sprocket to be removed, remove the PTO-
side driven shaft bearing. This will allow the driven
shaft to be lifted at the PTO-side and will loosen
the chain.

17. Remove the driveshaft extension, bottom

sprocket, and spacer washer.

AF427

18. Check the idler gear shaft. If the shaft surface is

rough, remove the shaft using a pair of vise-grip

pliers. Rotate the shaft counterclockwise.

19. Remove the shoulder nut securing the chain

tightener arm; then remove the arm from the

chain case.

AF447

20. Remove the three lock nuts (A) securing the top

bearing flange plate. Remove the flange plate,

seal, and bearing; then remove the three lock

nuts (B) securing the bottom bearing flange

plate. Remove the flange plate, seal, and bear-

ing.

AF431A

21. On the Bearcat W/T non-turbo model, remove

the two torx-head screws and the hose clamp

securing the air plenum to the mounting bracket

and air silencer; then remove the plenum.

„ NOTE: On the Bearcat W/T models, the gas tank
must be removed to access the intake plenum (see
Section 7).

22. On non-turbo models, remove the screw secur-

ing the air-intake silencer to the steering sup-

port; then pull the silencer forward and place it

on the carburetor/throttle body assembly.

23. Loosen the set screw on the PTO-side driven

shaft collar. Drive the collar clockwise (opposite

shaft rotation) until it is free.

„ NOTE: A fine file should be used to remove any
burrs left by the collar set screw.

24. Remove the lock nuts and carriage bolts secur-

ing the PTO-side driven shaft flange plates.

 

 

 

 

 

 

 

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