Polaris Virage TX 2000 Service Manual page 132

ENGINE
Disassembly/Inspection - Polaris Engines
Piston Pin / Needle Bearing Inspection
1 . Clean needle bearing in solvent and dry with
compressed air.
2 . Inspect needle cage carefully for cracks or shiny
spots which indicate wear. Replace needle bearings
if worn or cracked, and always replace them if piston
damage has occurred.
3 . Visually inspect piston pin for damage, discoloration,
or wear. Run your fingernail along the length of the
pin and replace it if any rough spots, galling or wear is
detected. Measure piston pin.
Piston Pin Diameter
21.005*21*, 998mm
Connecting Rod Small End Inspection
1 . Clean small end of connecting rod and inspect inner
bore with a magnifying glass. Look for any surface
irregularities including pitting, wear, or dents.
2 . Run your fingernail around the inside of the rod and
check for rough spots, galling, or wear.
3 . Oil and install needle bearing and pin in connecting
rod. Rotate pin slowly and check for rough spots or
any resistance to movement. Slide pin back and
forth through bearing while rotating and check for
rough spots.
4 . With pin and bearing centered in rod, twist ends back
and forth in all directions to check for excessive axial
play. Pull up and down evenly on both ends of pin to
check for radial play. Replace pin and bearing if
there is any resistance to rotation or excessive axial
or radial movement. If play or roughness is evident
with a new pin and bearing, replace the connecting
rod.
Polaris Sales Inc.
4.21
3/00