Measuring Valve Stem Runout/Valve Stem Outside Diameter; Measuring Valve Face/Seat Width; Measuring Valve Guide/Valve Stem Deflection (Wobble Method); Measuring Valve Guide (Inside Diameter) - Arctic Cat 2011 Prowler HDX Service Manual

3. Remove the valve springs; then invert the cylinder
head and remove the valves.
Measuring Valve Stem Runout
1. Support each valve stem end with the V Blocks; then
check the valve stem runout using a dial indicator.
2. Maximum runout must not exceed specifications.
Measuring Valve Stem Outside
Diameter
1. Using a micrometer, measure the valve stem outside
diameter.
2. Acceptable diameter range (intake valve) must be
within specifications.
3. Acceptable diameter range (exhaust valve) must be
within specifications.

Measuring Valve Face/Seat Width

1. Using a micrometer, measure the width of the valve
face.
2. Acceptable width range must be within specifica-
tions.
Measuring Valve Face Radial
Runout
1. Mount a dial indicator on the surface plate; then
place the valve stem on a set of V blocks.
2. Position the dial indicator contact point on the out-
side edge of the valve face; then zero the indicator.
3-14
3. Rotate the valve in the V blocks.
4. Maximum runout must not exceed specifications.
Measuring Valve Guide/Valve Stem
Deflection (Wobble Method)
ATV-1082
1. Mount a dial indicator and base on the surface plate;
then place the cylinder head on the surface plate.
2. Install the valve into the cylinder head; then position
the dial indicator contact point against the outside
edge of the valve face. Zero the indicator.
3. Push the valve from side to side; then from top to
bottom.
4. Maximum "wobble" deflection must not exceed
specifications.
Measuring Valve Guide
(Inside Diameter)
1. Insert a suitable bore gauge 1/2 way into each valve
guide bore and record the measurement.
ATV-1004
2. Acceptable inside diameter range must be within
specifications.
3. If a valve guide is out of tolerance, it must be
replaced.
Manual
Table of Contents
ATV1082A
CC131D