Camshaft Sprocket Inspection; Camshaft / Camshaft Bore Inspection - Polaris 2012 RANGER RZR 570 INTL Service Manual

Camshaft Sprocket Inspection

NOTE: Camshaft sprocket removal is not necessary
unless the replacement of the sprockets is required.
Inspect cam sprocket teeth for wear or damage. Replace
timing chain and sprockets as a set if worn or damaged.
Inspect
Sprocket Teeth
Replace if
Worn or Damaged
IMPORTANT: Replace camshaft sprocket bolts if they
are loosened or removed.
Camshaft Sprocket Bolts:
15 ft. lbs. (20 Nm)
= T
9923523 - 2012 RANGER RZR 570 Service Manual
© Copyright 2011 Polaris Sales Inc.
ENGINE / COOLING SYSTEM

Camshaft / Camshaft Bore Inspection

Inspect a ll main journals a nd cam lo bes as de scribed
below and compare to specifications. Replace camshafts
or cylinde r he ad if wo rn beyond s ervice limit or if any
surface is pitted or damaged.
1. Visually inspect each cam lobe for wear or damage.
2. Measure the height of each cam lob e from the base
circle to highest point on the lobe using a micrometer.
Compare to specification.
NOTE: Replace camshafts if damaged or if any part
is worn past the service limit.
Camshaft Lobe Height:
Intake: 1.5704" ± 0.0038" (39.89 ± 0.097 mm)
Exhaust: 1.5405" ± 0.0038" (39.13 ± 0.097 mm)
3. Visually insp ect each camsha ft journal for sco ring,
wear or damage.
4. Measure the diameter of the camshaft journals using
a micrometer. Compare to specification.
= In. / mm.
3.39
3