Polaris A12MH46AX Service Manual page 327

8. Install the rear drive differential and drive chain,
following these precautions:
• The case half rear output seal should be removed
prior 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
fork 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
tensioner 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.
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
• Insert the front pin through the tensioner cam and
the rear pin through the tensioner shoe.
Spring Leg
Top View
Tensioner
• Place the spring over the front pin and hook the
spring leg under the cam.
View From Left Side of Transmission
Hook Spring Leg Under Cam
• Lift the end of the spring up and over the rear pin.
The tensioner cam will lift the shoe to provide
chain tension.
TRANSMISSION
Forward
Cam
Forward
Lift Spring Over Rear
Mounting Pin
8.21
8