3
9926806 R03 - 2015 - 2016 RANGER ETX / 570 2-SEAT 2015 - 2016 RANGER 570 CREW Service Manual
© Copyright Polaris Industries Inc.
3.75
1. Remove the stator cover.
2. Remove the bolts
q
securing the oil pump cover to
the stator cover.
3. Grasp the oil pump shaft
t
and pull it outward to
remove the shaft, oil pump cover
w
and inner oil
pump gerotor.
NOTE
The gerotor set has
w
orientation dots that must be
installed inward upon assembly.
4. Remove the center gerotor
e
, pin
r
and shaft
t
from the oil pump cover.
NOTE
There is a spacer in between the inner oil pump gerotor
and the oil pump cover.
5. Remove the oil pump gerotor that is in the stator
cover (if needed).
6. Clean the gerotor to remove oil.
7. Inspect surfaces of pump cavity in stator cover and
surface of pump cover for scoring or wear.
8. Inspect gerotor for scoring or other damage. Replace
parts as a set if damaged.
OIL PRESSURE REGULATOR (BYPASS)
VALVE INSPECTION
The oil pressure regulator (bypass) valve is located in the
stator cover.
1. Remove the retaining ring
q
securing the oil
pressure regulator piston in the stator cover.
2. Remove the washer
w
, spring
e
and piston
r
.
3. Replace the oil pressure regulator piston if it binds,
sticks or does not operate smoothly.
4. Thoroughly clean the piston and bore.
5. Coat the piston with clean engine oil and insert it into
the stator cover until fully seated.
6. Install the spring, washer and retaining ring.
STATOR COVER OIL SEAL INSPECTION
Inspect the oil seal
q
whenever the stator cover is
removed from the engine. Remove and replace if wear is
found.
When installing a new seal, press seal in with lips facing
towards cover. Press until seal is fully seated in bore
w
.
ENGINE / COOLING SYSTEM
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