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9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual
© Copyright Polaris Inc.
REASSEMBLY, FRONT GEARCASE (ADC)
1. Clean the gearcase housing of debris.
2. Replace all O-rings, seals, and worn components.
3. Inspect bearings on output and pinion shafts. To
replace, press new bearing onto shaft.
NOTICE
Due to extremely close tolerances and minimal wear,
the bearings must be inspected visually, and by feel.
While rotating bearings by hand, inspect for rough
spots, discoloration, or corrosion. The bearings should
turn smoothly and quietly, with no detectable up and
down movement and minimal movement side to side.
4. Install input shaft, bearing, and snap ring.
5. Press the pinion shaft seal into the gearcase, until the
seal is flush.
6. Install the LH output hub
s
into the gearcase
housing. The output hub should spin freely.
7. Install the torsion spring by wrapping each leg of the
spring around the dowel pin on the ring gear.
8. Install the rollers and roll cage into the ring gear.
Insert the rollers as the roll cage is installed.
9. Install the pins
a
, roll cage
o
, and ring gear
assembly
i
into the gearcase housing.
FINAL DRIVE
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