3.78
ENGINE / COOLING SYSTEM
9923523 - 2012 RANGER RZR 570 Service Manual
© Copyright 2011 Polaris Sales Inc.
Crankshaft Removal
1. Remove the engine from the engine stand and place
the assembly on a sturdy work bench.
2. Remove the ( 2) bolts secur ing the bearing r etainer
p
late to the crankcase. Remove the bearing plate.
3. Install the crankshaft remov
al / installation tool
PU-50784 on to the PTO side crank case.
• Install plate “A” over adapter “B”.
• Evenly attach the assembly onto the PTO side
cr
ankcase using the (4) bolts as shown below.
• Thread the crankshaft removal
screw “C” into
adapter “B”.
4. With the help of an assistant holding the crankshaft,
slo
wly t ighten th e screw “C ” unt il the crankcase is
completely separated from the crankshaft.
5. Remove all special tools from the crankcase.
Crankshaft Inspection
IMPORTANT: The c onnecting rod u ses plain
bearings. The co nnecting rod be arings a re not
serviceable. If ANY exc essive we ar or mov ement is
present or if the rod does not rotate on the crankshaft
freely, the crankshaft assembly must be replaced.
1. Use a feeler gauge to measure the connecting rod big
end
side clearance (A).
2. Measure the connecting rod small end I.D. (B).
Connecting Rod Big End Side Clearance:
0.00590-.01771” (.15 - .45mm)
Small End I.D. Standard:
0.8665” - 0.8670” (22.010 - 22.023 mm)
Service Limit: 0.
08682” (22.053 mm)
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