3
9928485 R01 - 2017-2018 RANGER 500 / 570 Service Manual
© Copyright Polaris Industries Inc.
3.189
3. Remove the oil pump sprocket bolts
e
and washers.
Discard the bolts and replace with new for assembly.
Remove the sprockets and chain from the engine.
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 mounts to the balance
shaft extension, the smaller oil pump sprocket mounts
to the oil pump shaft.
5. Remove the upper oil pump sprocket spacer
r
.
6. Remove the bolts
t
securing the oil pump cover to
the crankcase.
7. Grasp the oil pump shaft
y
and pull it outward to
remove the shaft, oil pump cover and inner oil pump
gerotor. This will prevent the oil pump drive pin from
falling out and into the crankcase.
NOTE
The gerotor set has (2) orientation dots that must be
installed inward upon assembly
ENGINE / COOLING SYSTEM
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