Required Tools and Supplies:
- 5mm Allen Socket
- 14mm Socket
- 16mm Socket
- 17mm Socket
- 1 1/16” Socket
- 14mm Wrench
- 14mm Crow Foot
- Torque Wrench
- Breaker Bar
- Flat-Head Screwdriver
- Wire Hanger, Rope, or Retention Strap
- Rear Upper Bearing Carrier Lock Nut
- Compression Clip
- Cotter Pin
- Safety Glasses
- Nitrile Gloves
- Shop Towels
To learn more about tools, read the Tools and Fasteners Guide. For the procedure to remove and install the front half shaft, read Model Year 2021+ Sportsman 450 and 570 Front Half Shaft Removal and Installation
Always wear safety glasses and nitrile gloves when servicing your Polaris ATV.
1. Park the vehicle on a flat, level surface, ensure it is in PARK and set the parking brake.
2. Before removing the tire, the wheel hub castle nut needs to be loosened.
b. Then remove and discard the cotter pin from the castle nut with a pliers.
c. Continue by slightly loosening the castle nut with a 1 1/16” socket.
d. Loosen the lug nuts with a 17mm socket and breaker bar while the vehicle is on the ground but do not remove at this time.
f. Once safely elevated, remove the lug nuts and set aside.
g. Remove the wheel and set aside.
3. Remove and retain the lower bearing carrier fasteners and washers with a 16mm socket.
4. Carefully pry out the end caps on the bearing carrier with a flat-head screwdriver.
5. Pull the bushing assemblies out from the carrier. The mounting fastener can be used to help remove the bushings out of their bores.
6. Before continuing, release the parking brake.
7. Loosen the set screw on the back of the caliper with a 5mm Allen socket to allow the caliper mount pin to slide backwards.
9. Remove the caliper from the hub and support it with a wire hanger, rope or retention strap to avoid damaging the brake line.
10. Remove the wheel hub castle nut and domed washers from the drive shaft spline.
11. Pull the wheel hub away from the shaft spline and set aside.
12. Loosen the upper bearing carrier fastener and discard the nut with a 14mm socket and wrench.
13. Lift the bearing carrier to remove the upper fastener and the carrier.
14. Sharply pull outward on the shaft assembly to remove it from the transmission.
15. Clean the anti-seize off the drive shaft splines using a clean, dry cloth.
16. Inspect the threads and splines on the half shaft for nicks or burrs and replace if needed.
17. Inspect the CV boots to ensure there are no cuts, wear, or damage and replace if needed.
18. Remove and discard the compression ring on the drive shaft with a flat-head screwdriver.
20. Before installing, clean any old anti seize from the gearcase and hub assembly.
21. Apply new anti-seize to the splines on the half shaft.
22. Align the splines on the half shaft with the transmission and push in firmly on the shaft until the compression ring is fully engaged in the transmission.
23. Insert the half shaft through the bearing carrier and align the carrier with the mounting holes on the A-Arms.
24. Reinstall the upper carrier fastener from the rear of the vehicle with a new nut.
25. Align the wheel hub with the drive shaft spline and maneuver onto the shaft until fully seated.
26. Reinstall the domed washers with the domed side out and castle nut onto the shaft spline.
27. Carefully slide the caliper assembly onto the brake disc, ensuring the brake rotor is between the two pads. Before continuing, ensure any items used to secure the brake caliper are removed from the wheel well.
28. Install the spring washer and washer onto the caliper fastener.
29. Install the lock washer and flat washer onto the caliper fasteners and reinstall the two fasteners into the caliper bracket.
30. Using a 14mm socket and crow foot, torque the fasteners to 23 ft-lbs (31 Nm). The hub will need to be pivoted out to access the lower caliper fastener.
32. Loosen the set screw a half-turn.
42. Safely lower the vehicle until the tires begin to touch the ground. This will help keep them in place when torqueing.
43. Once lowered, torque the lug nuts to the specifications below in a criss-cross pattern.
- Steel: 27 ft-lbs (37 Nm)
- Aluminum: 30 ft-lbs (40 Nm) plus 1/4 turn
45. Install a new cotter pin into the castle nut. If necessary, slightly tighten the castle nut to align the cotter pin hole.
46. Push the dust cap onto the wheel and ensure it is fully seated.
47. Safely lower the vehicle completely.
For more information, see your authorized Polaris Dealer. Find a dealer near you with the Dealer Locator.
Maintenance tips, procedures and specifications can be found in your Owner's Manual.
To find diagrams and replacement part numbers, use the online parts catalog.
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