Page 223 - Manual_Polaris_RZR_ProXP-20-21

ENGINE / COOLING SYSTEM

CRANKSHAFT MAIN BEARING UPPER CRANKCASE PREPARATION
SELECTION IMPORTANT
In order to select the proper main bearings for the Always replace plain bearings when the crankcase or
crankshaft, you must reference the six numbers on the connecting rods have been disassembled. Refer to
crankcase and match that up with the main journal letters bearing selection procedures.
on the crankshaft. Reference Bearing Selection
Identification page 3.78
1. Remove all traces of crankcase sealer from the
crankcase mating surfaces. Inspect the surfaces
closely for nicks, burrs or damage.
3
2. Clean bolt hole threads to remove any oil or
crankcase sealant.
3. Inspect crankcase bearing bores. Replace the
crankcase assembly if a bearing bore is galled or if
bearing inserts have rotated in the case.
4. Be sure alignment pins are in place where used.

5. Refer to Oil Flow Chart page 3.6 at the beginning of
this chapter and trace the oil paths through the
crankcase and cylinder.

6. Flush all oil passages with solvent and then warm
soapy water. Rinse with clear, warm water and dry
For example, you would use the number 2 as the with compressed air.
crankcase codes (case journals q, w, e, r). The
stamping on the crankshaft reads ABBCBA (crank 7. Be sure passages are clean and dry before
journalsq, e, t, y). Based off the bearing selection assembling the upper crankcase.
chart, you would use:
Blue bearing for Main #1 u
Green bearing for Main #2 i
Green bearing for Main #3 o
Blue bearing for Main #4 a

BEARING SELECTION CHART — MAIN BEARINGS
Crankshaft

Code A B C
1 Blue Blue Green
Case
2 Blue Green Yellow
3 Green Yellow Yellow

9930583 R01 - 2020-2021 RZR PRO XP / XP 4 Service Manual 3.79
© Copyright Polaris Industries Inc.