3.30
ENGINE / COOLING
9924125 - 2013
RANGER
RZR / RZR S / RZR 4 Service Manual
© Copyright 2012 Polaris Sales Inc.
Valve Inspection
1.
Remove all carbon from valves with a soft wire wheel
or brush.
2.
Check valve face for runout, pitting, and burnt spots.
To check for bent valve stems, mount valve in a drill
or use “V” blocks and a dial indicator.
3.
Check end of valve stem (A) for flaring, pitting, wear
or damage. Inspect split keeper groove (B) for wear
or flaring of the keeper seat area.
NOTE: The valves can be re-faced or end ground, if
necessary. They must be replaced if extensively
worn, burnt, bent, or damaged.
4.
Measure diameter of valve stem with a micrometer in
three places, then rotate 90 degrees and measure
again (six measurements total). Compare to
specifications.
5.
Measure valve guide (C) inside diameter at the top
middle and end of the guide using a small hole gauge
and a micrometer. Measure in two directions.
6.
Subtract valve stem measurement from the valve
guide measurement to obtain stem to guide
clearance.
NOTE: The valve guides cannot be replaced. Be
sure to measure each guide and valve combination
individually.
A
B
Measure valve stem in several places. Rotate
the valve 90 degrees and measure for wear.
=
In. / mm.
Valve Stem Diameter:
Intake: 0.2356"
0.00039"
(5.985
0.01 mm)
Exhaust: 0.2351"
0.00039"
(5.972
0.01 mm)
=
In. / mm.
Valve Guide I.D.:
0.23672"
0.000295"
(6.0617
0.0075 mm)
=
In. / mm.
Valve Stem Oil Clearance:
Intake: 0.00228"
0.00098"
(0.058
0.025 mm)
Exhaust: 0.00275"
0.00098"
(0.087
0.025 mm)
C
PRELIMINARY
VERSION
Содержание 2013 RANGER RZR
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