Polaris 2012 RANGER RZR 570 INTL Service Manual page 126

ENGINE / COOLING SYSTEM
3. 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.
Larger Sprocket
(Upper)
Smaller Sprocket
(Lower)
NOTE: The larger oil pu mp sp rocket moun ts to th e
balance s haft e xtension, t he s maller oil pump
sprocket mounts to the oil pump shaft.
4. Remove the upper oil pump sprocket spacer.
5. Remove the (3) bolts securing the oil pump cover to
the crankcase.
3.74
6. Grasp the oil pump shaft and pull it outward to remove
IMPORTANT: The gerotor set has (2) orientation dots
that must be installed inward upon assembly 
(Figure 1 on the next page).
7. Remove the center geroter, pin and shaft from the oil
NOTE: There is a spacer in be tween t he inne r oil
pump geroter and the oil pump cover.
8. Remove the oil pump geroter that is in the engine case
9. Clean the geroters to remove oil.
10. Inspect su rfaces of pum p ca vity in cr ankcase and
9923523 - 2012 RANGER RZR 570 Service Manual
© Copyright 2011 Polaris Sales Inc.
the shaft, oil pump cover and inner oil pump geroter.
This will prevent the oil pump drive pin from falling out
and into the crankcase.
pump cover.
(if needed).
surface of pump cover for scoring or wear.
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