7.18
FINAL DRIVE
9923523 - 2012 RANGER RZR 570 Service Manual
© Copyright 2011 Polaris Sales Inc.
AWD Diagnosis
Symptom: AWD Will Not Engage
1. Check the gearcase coil re sis
tance. To test the coil
resistance, me asure between th e Gr ey and Brown/
White wir es. T he m easurement sh ould b e within
specification.
2. Turn the ignition and AWD switches on and place gear
se
lector in H igh or Lo w g ear. Ch eck fo r m inimum
battery voltage at the Gray and Brown/White chassis
wires that power the coil. A minimum of 11 Vdc should
be present.
3. If electrical tests ar e with in spe cification, r emove
ge
arcase (s ee “G earcase Re moval”) a nd ins pect
components.
4. Inspect the armature plate for a con sistent wear
patter
n. There should be two distinct wear bands (one
band inside the oth er). If o nly one band of wear is
present (or if there is wear between the two bands),
inspect the coil ar ea as indicate d in Step 5 . A wear
band with an interrupted wear mark may indicate a
warped pla te, which may ca use inter mittent
operation. See the following illustrations:
5. Check to make sure the coil is seated in the U-shaped
inser
t that is pressed into the gearcase cover. The top
of the coil should b e se ated below the U-sha ped
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.
6. Inspect the rollers for nicks and scratches. The rollers
must slide up, down, in a nd ou
t freely within the r oll
cage sliding surfaces and H-springs.
Front Gearcase Coil Resistance:
21.6 - 26.4 Ohms
Check for
Armature Plate
wear bands
Gearcase Cover Plate Asm.
Coil
U-shaped insert
Side cutaway
view of cover
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