Snowmobile Arctic Cat (2008 year). Manual - part 127

7-68

ZJ269A

5. Install coupler block w/bushing. Secure with cap

screw and lock nut. Tighten securely.

MS195A

6. Install the cap screw securing the rail support to

the slide rail. Tighten only until snug.

MS191A

7. Install the rear inner idler wheel mounting block in

the appropriate holes as noted during disassembly

and secure with cap screw and lock nut. Tighten to

34 ft-lb.

„NOTE: For proper alignment, it is advisable to
install an idler wheel cap screw into the top mount-
ing block hole prior to tightening.

MS196A

8. Secure the front arm mounting bracket with the

cap screws and lock nuts. Tighten to 34 ft-lb.

MS197

9. Install the cap screw (if removed) and lock nut

securing the front inner idler wheel assembly to

the slide rails. Tighten only until snug.

MS198A

10. Install the front arm shock axle to the proper hole

as noted in removing; then secure with the cap

screw, washers, and the lock nut. Tighten only

until snug.

7-69

7

MS201A

11. Position the rear arm spring to the rear arm and

place the spring into the slide block; then place the

spring slide and slide block assembly into position

on the slide rail. Secure with a cap screw and

washer. Tighten to 34 ft-lb.

MS202

12. Secure the outer idler wheel mounting block with

the cap screw and lock nut. Tighten to 34 ft-lb.

„NOTE: To obtain proper alignment for the idler
wheel cap screw, place the cap screw in the top
hole through the rail and mounting block prior to
tightening.

MS009A

13. Secure the outer and inner idler wheels to the

mounting blocks with existing hardware. Tighten

to 34 ft-lb.

MS204

14. Install the upper shock mount to the front arm.

Tighten securely.

MS162A

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

15. Secure the rail supports with cap screws (coated

with blue Loctite #243). Tighten to 30 ft-lb.

MS205

„NOTE: At this point, tighten the mounting hard-
ware from the following steps to specifications: 4
(40 ft-lb), 6 (50 ft-lb), 9 (40 ft-lb), and 10 (40 ft-lb).

16. Install the front arm limiter straps to the front rail

supports. Tighten to 18 ft-lb.

7-70

MS161A

17. Secure the end cap onto the slide rail using a cap

screw, flat washers, and a lock nut. Tighten to 7 ft-

lb.

MS206A

„NOTE: Apply a light coat of grease to the slide
rail surface to aid in installing a new wear strip. If
there are any sharp edges on the lower portion of
the rail, use a file to remove them.

MS288

18. From the back, start the wear strip onto the rail;

then using a soft hammer, drive the wear strip for-

ward into position. Secure with a machine screw

and lock nut. Tighten to 60 in.-lb.

MS207

MS016B

19. After the skid frame has been installed, adjust

track tension deflection (see Track Tension in this

sub-section) and track alignment (see Track Align-

ment in this sub-section).

Installing Skid Frame

1. Place a piece of cardboard on the floor to protect

against scratching and tip the snowmobile onto

one side.

2. Pull the track away from the tunnel and spread

open; then place the skid frame into the track.

3. Position the front of the skid frame into the tunnel

and align the front arm with the appropriate

mounting hole in the tunnel. Insert the cap screw

with washers through the tunnel mounting hole

and through the front arm. DO NOT TIGHTEN

AT THIS TIME. Repeat this procedure on the

other side.

! CAUTION

When installing the skid frame, make sure the rear
arm shock mounting location on the pivot/axle is
positioned correctly above the axle or component
damage will occur.

7-71

7

739-992A

„NOTE: To aid in centering the front arm with the
hole in the tunnel, position the skid frame and
track at a 45° angle to the bottom of the tunnel.

4. Elevate the rear of the skid frame and the track

into position in the tunnel.

5. Align the pivot arm assembly with the appropriate

hole in the tunnel. Secure the pivot arm assembly

with a cap screw (coated with red Loctite #271),

lock washer, and flat washer. DO NOT TIGHTEN

AT THIS TIME.

„NOTE: Do not install the short legs of the rear
springs onto the adjusting cams at this time.

6. At this time, tighten all four skid frame mounting

cap screws securely.

7. Using the Rear Suspension Spring Tool, install the

short legs of the rear springs onto the adjusting

cams making sure the cams are in the same adjust-

ment positions.

8. Tighten the two track tension adjusting bolt evenly

until track deflection is within specifications; then

lock the jam nuts to secure the adjustment.

9. Check track tension deflection and alignment;

adjust if necessary (see Track Tension and Track

Alignment in this sub-section).

Track Tension

CHECKING DEFLECTION

1. Tip the snowmobile on its side.

2. Hook a spring scale around a track clip at mid-

span; then pull the track down with the scale and

measure the distance between the bottom of the

wear strip and the inside surface of the track clip.

Track deflection must be within specifications.

729-429A

„NOTE: If the track is new, it will stretch slightly
and take a “set” within the first 300 to 500 miles of
operation.

ADJUSTING DEFLECTION

1. Place the snowmobile up on a shielded safety

stand. Check to make sure the track is 2-3 in. off

the floor.

2. If the measurement is not as specified, loosen the

jam nuts of the adjusting bolts.

0727-456

3. If the measurement obtained in step 2 is more than

specified, tighten the adjusting bolts. If the mea-

surement obtained is less than specified, loosen

the adjusting bolts. When the measurement is

within specification range, lock the adjustment by

bottoming the jam nuts against the axle housings.

„NOTE: If the track tension must be loosened, it
may be necessary to loosen the rear axle assem-
bly slightly.

„NOTE: Vigorously push the underside of the
track up and down. Track must not hit the top of
the tunnel or slap the skid frame.

! WARNING

Deactivate all switches.

Setup

Tension

After Break-In

Tension

44-51 mm
(1 3/4-2 in.) @ 20 lb

51-57 mm
(2-2 1/4 in.) @ 20 lb