Polaris ACE 900 2017 Service Manual page 380

STEERING / SUSPENSION
• Be sure to bottom out piston in the reservoir body.
• Allow time for the bubbles to dissipate.
• Repeat the process until all air has been removed.
17. Pull IFP up until its top is approximately 1" (2.54 cm)
from top of reservoir and remove the IFP Tool. Using
a 3/32" Allen wrench, install the IFP bleed screw.
When the IFP Tool is removed, the IFP must remain
submerged in shock oil to prevent air from getting under
the floating piston.
18. Fill the shock body with oil approximately 1/4" below
the threads.
19. Apply a thin film of oil to the wear band on the
damping piston. Slowly insert the shock rod assembly
into the body until the damping piston assembly is
approximately 1" below the oil surface.
• Move rod up and down slowly over a range of
about 1" until no air bubbles rise from damping
piston. Be careful to keep damping piston at least
1/4" below the surface of the oil during this process.
• While holding the shock rod, apply 2 - 3 sharp
blows to the rod eyelet with a rubber mallet driving
the piston down into the shock body. This opens
the valves on the damping piston. You will see the
released air bubbles come to the surface of the oil.
8.48
NOTE
20. Add oil to the body tube until the surface of the oil is
at the top of the shock body threads.
During installation, some shock oil will over flow. Wrap
a shop cloth around the shock body to catch any oil
overflow.
21. Pull the damping piston up until it is just below the
surface of the oil.
22. Hold the rod eyelet with one hand. With other hand,
slide the bearing cap down the shaft until contact with
the body is made. Oil will overflow from around the
bearing cap.
23. Screw the bearing cap assembly into the shock body
by hand, holding the rod up so that the bearing cap is
in contact with the bottom of the damping piston
assembly. Be careful not to cross-thread the bearing
assembly.
24. Using a 1" open-end wrench, tighten the bearing cap.
25. Using a 3/32" Allen wrench, remove the IFP bleed
screw.
26. Set the IFP depth to the specified length from the top
of the reservoir.
MEASUREMENT
IFP Depth:
FRONT: 2.875" (73.0 mm)
REAR: 3.375" (85.7 mm)
27. Using a long 3/32" Allen wrench, install the IFP bleed
screw.
Apply grease to the end of the Allen wrench so the
bleed screw sticks to it during installation.
9929422 R02 - 2017-2019 ACE 900 Service Manual
NOTE
NOTE
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