7.22
FINAL DRIVE
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
Disassembly / Inspection
1. Drain and properly dispose of used oil. Remove any
metal particles from the drain plug magnet.
2. Remove the piston pump assembly from the
gearcase.
NOTE: Piston pump is a non-serviceable item and
s
hould not be disassembled. Replace as an
assembly if found to be damaged or non-working.
3. Remove screws (arrows) retai
ning the outer cover
plate assembly.
4. Remove the outer cover
plate assembly. Remove
and inspect the cover o-ring (A). Replace items as
required.
NOTE: Thrust bearing (2) located between the two
out
put assemblies is pressed into the clutch pack
and is not removable.
5. Remove the output clutch assembly. Inspect thrust
bea
ring (B) for wear. Inspect the bearings, contact
surfaces and splines of the output clutch for signs of
wear or damage. Visually inspect the clutch plate
area. If plates are steel-on-steel, or if the friction
material is worn, the assembly should be replaced.
NOTE: Excessive debris in the oil and/or noise
coming fr
om the front drive on deceleration are key
indicators of clutch pack failure. Replace clutch as
an assembly if found to be worn or damaged.
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