Polaris 2009 Sportsman XP 850 Service Manual page 273

Removal
The following procedure details upper and lower A-arm
removal and replacement on one side of the vehicle.
1. Elevate and safely support the rear of the vehicle and
remove the rear wheel.
Upper A-arm Removal
2. Remove the through-bolt fastener attaching the upper A-
arm to the bearing carrier (see "Exploded View").
3. Remove the through-bolt fasteners attaching the upper A-
arm to the frame and remove the A-arm from the vehicle.
4. Examine A-arm and bearing carrier bushings and pivot
shafts (see "Exploded View"). Replace if worn and discard
the hardware.
WARNING
The locking agent on the existing bolts was
destroyed during removal. DO NOT reuse old
hardware. Serious injury or death could result if
fasteners come loose during operation.
5. If not replacing the A-arm, thoroughly clean the a-arm and
pivot shafts.
6. Insert new bushings and pivot shafts into the new A-arm.
Lower A-arm Removal
7. Remove the through-bolt fastener attaching the lower A-
arm to the bearing carrier (see "Exploded View").
8. Remove the lower shock fastener from the lower A-arm.
9. Remove the brake line retainer from the lower A-arm.
STEERING / SUSPENSION
10. Remove the fastener retaining the stabilizer linkage to the
lower A-arm.
11. Remove the through-bolt fasteners attaching the lower A-
arm to the frame and remove the A-arm from the vehicle.
12. Examine A-arm and bearing carrier bushings and pivot
shafts (see "Exploded View"). Replace if worn and discard
the hardware.
13. If not replacing the A-arm, thoroughly clean the a-arm and
pivot shafts.
14. Insert new bushings and pivot shafts into the new A-arm.
Installation
1. Install upper and lower A-arm assemblies onto the vehicle
frame. Torque new fasteners to 45 ft. lbs. (61 Nm).
2. Grease all (4) A-arm grease fittings after reassembly.
3. Attach lower A-arm to bearing carrier.
fastener to 45 ft. lbs. (61 Nm).
4. Attach upper A-arm to bearing carrier. Torque new
fasteners to 40 ft. lbs. (54 Nm).
5. Grease both rear bearing carrier fittings after reassembly.
6. Route brake line on top of lower A-arm and install retainer.
7. Reinstall the lower portion of the shock and lower portion
of the stabilizer linkage to the lower A-arm. Torque
mounting fasteners to 37 ft. lbs. (50 Nm).
8. Install wheel and torque wheel nuts to specification.
WARNING
Upon A-arm installation completion, test vehicle
at low speeds before putting into service.
Torque new
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