Crankcase Separation - Polaris RANGER 500 2018 Service Manual

ENGINE / COOLING SYSTEM
2. Remove the hose clamps from the valve and pull the
valve out of the hoses.
3. Inspect the valve for debris. Blow gently through the
valve to check for clogging. Replace a damaged or
clogged valve.
4. Check the hoses for cracks, deterioration, abrasion,
or leaks. Replace as needed.
CAUTION
Make sure lines are not kinked or pinched.
5. Reinstall the valve and hose clamps.
CAUTION
Operation of your vehicle without a breather valve can
cause engine damage. Always reinstall the breather
valve after removing it for service.
6. Install the left side panel

CRANKCASE SEPARATION

Before the crankcase can be separated, be sure the
entire top end, water pump stator, flywheel and oil
pump assembly are removed from the engine as
outlined in this chapter.
1. Remove the engine from the engine stand and lay it
on a table so the magneto side is facing upward.
WARNING
Support the engine case with a non marring material to
prevent damaging the PTO side of the crank shaft and
any mating surfaces.
Ensure the crank case is stable before working on it.
2. Remove the oil pan at this time if it has not already
been removed.
3.192
NOTE
3. Remove the oil filter and the fasteners
w
oil filter adapter to the crankcase. Discard O-rings
and through clean the adaptor for reassembly.
4. Remove and discard the flange bolts
intermediate (mag) cover evenly in a criss-cross
pattern.
5. Remove and discard the flange bolts
magneto side crankcase evenly in a criss-cross
pattern.
6. Separate crankcase by tapping with a soft faced
hammer in reinforced areas and lift MAG crankcase
off PTO case.
9928485 R01 - 2017-2018 RANGER 500 / 570 Service Manual
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