8.21
TRANSMISSION
8
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
8. Install the rear drive differential and drive chain,
following these precautions:
• The case half rear output seal should be removed
prio
r to installation of the differential, as seal
damage can occur with seal installed due to the
angle of entry.
• Install the differential sliding geardog onto the shift
fo
rk arms at the same time the silent chain is
installed.
• The differential gear bearing may be lightly tapped
into place. The
output seal can be installed once
the assembly is in place.
9. Tensioner Installation:
NOTE: Case-halve mating may be difficult due to
t
ensioner pressure on the silent chain during
installation. Release tension at the ratcheting cam to
aid case half installation. Release the tensioner
spring after the case halves are mated but not yet
touching.
• Assemble the tensioner cam and tensioner shoe
and
place them into the transmission.
• Insert the front pin through the tensioner cam and
the r
ear pin through the tensioner shoe.
• Place the spring over the front pin and hook the
sp
ring leg under the cam.
• Lift the end of the spring up and over the rear pin.
The
tensioner cam will lift the shoe to provide
chain tension.
Top View
Forward
Spring Leg
Tensioner
Cam
View From Left Side of Transmission
Forward
Hook Spring Leg Under Cam
Lift Spring Over Rear
Mounting Pin
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