Polaris RANGER 500 2018 Service Manual page 449

Symptom: AWD Will Not Engage
1. Check the gearcase coil resistance. To test the
gearcase coil resistance, use the coil harness (Grey
& Brown/White).
NOTE
To test the gearcase coil resistance, use the coil
harness. The gearcase coil should measure between
22.8 ohms and 25.2 ohms.
ADC Front Gearcase Coil Resistance
B-C (4X4): 23 Ω ±4Ω
A–D (4X4 ADC): 12.49 Ω ±4Ω
2. Check the minimum battery voltage at the Grey &
Brown/White wires that feed the hub coil wires.
AWD Coil Applied Battery Voltage:
11.80-12.0 Vdc
3. Inspect the armature plate
pattern. There should be two distinct wear bands
(one band inside the other). If only one band of wear
is present (or if there is wear between the two bands,
inspect the coil area as indicated in Step 4. A band
with an interrupted wear mark may indicate a warped
plate, which may cause intermittent operation.
9928485 R01 - 2017-2018 RANGER 500 / 570 Service Manual
© Copyright Polaris Industries Inc.
4. Check to make sure the coil
5. Inspect the rollers for nicks, scratches, and flat spots.
e
for a consistent wear
r
y
shaped insert that is pressed into the gearcase
u
cover . The top of the coil should be seated below
the U-shaped insert. The U-shaped insert controls the
pole gap. If the top of the coil is above the surface of
the U-shaped insert it raises the armature plate,
thereby increasing pole gap. If the pole gap increases
the coil will not be strong enough to engage the AWD
system. If this is found, replace the cover plate
assembly.
o
Also inspect the roll cage
a
the rollers are able to slide up and down and in and
out freely within the roll cage sliding surfaces.
FINAL DRIVE
t
is seated in the U-
for cracks and ensure
7
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