6. CYLINDER HEAD/VALVES STRYKER 125/150
Ream the guides to remove any carbon
build-up using a valve guide reamer.
Special Tool
Valve Guide Reamer
During this operation, rotate the reamer
clockwise and do not insert or remove it
straight when it is stopped.
Valve Guide Reamer
Measure each valve guide I.D.
Service Limits: IN: 5.780mm replace if
over
EX: 5.780mm replace if
over
Subtract each valve stem O.D. from the
corresponding guide I.D. to obtain the
stem-to-guide clearance.
Service Limits: IN: 0.080mm
EX: 0.10mm
· If the stem-to-guide clearance exceeds
the service limits, replace the guides.
· Reface the valve seats whenever the
valve guides are replaced.
VALVE GUIDE REPLACEMENT
Drive out the old valve guides with the
valve guide driver.
· Remove carbon build-up from the
guides before driving them out.
· Drive the guides out vertically.
Special Tool
Valve Guide Driver
Valve Guide Driver
6-10