7.26
FINAL DRIVE
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
ADC Gearcase Piston Replacement
Procedure
1. Place ADC Piston Tool PA-48542 on top of the
piston. Using moderate hand pressure, hold the tool
on top of the piston while using compressed air at the
gearcase passage (circled) to force piston up and out
of the case. (See photo)
2. Repeat procedure for the othe
r piston. (See photo)
3. Remove and discard the inner and outer o-rings from
th
e piston assembly.
NOTE: Never re-use o-rings. Al
ways replace with
new.
4. Coat new piston and o-rings with a moderate amount
of white
lithium grease or assembly lube. Coat the
edges of the piston cavities. Install the inner and outer
piston o-rings.
5. Place the piston in the pisto
n cavity, aligning the pins
with the pin bosses. Using the casting and piston
marks as a guide as shown will aid pin alignment.
This repair procedure involves the
use of compressed air. Safety glasses
or a face shield are required.
AIR
ADC Piston Tool
PA-48542
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