Polaris RANGER 500 2018 Service Manual page 171

4. Inspect the oil pump chain for worn or missing rollers
or damage. Chain should be replaced as a set with
sprockets if sprocket teeth are worn.
NOTE
The larger oil pump sprocket
shaft extension, the smaller oil pump sprocket
mounts to the oil pump shaft.
5. Remove the upper oil pump sprocket spacer
6. Remove the three bolts
cover to the crankcase.
9928485 R01 - 2017-2018 RANGER 500 / 570 Service Manual
© Copyright Polaris Industries Inc.
t
mounts to the balance
y
u
.
i
securing the oil pump
ENGINE / COOLING SYSTEM
7. Grasp the oil pump shaft and pull it outward to
remove the shaft, oil pump cover
a
pump gerotor . This will prevent the oil pump drive
pin from falling out and into the crankcase.
NOTE
a
The gerotor set has two orientation dots that must be
installed inward upon assembly
8. Remove the center gerotor, pin and shaft from the oil
pump cover.
NOTE
There is a spacer in between the inner oil pump gerotor
and the oil pump cover.
9. Remove the oil pump gerotor that is in the engine
case (if needed).
10. Clean the gerotors to remove oil.
o
and inner oil
3
3.93