Camshaft - Suzuki GSX-R750 Service Manual

CAMSHAFT

CAMSHAFT IDENTIFICATION
The exhaust camshaft can be distinguished from that of the
intake by the embossed letters "EX" (for exhaust) as against let-
ters "IN" (for intake).
CAM WEAR
• Check the camshaft for wear or damage.
• Measure the cam height H with a micrometer.
 Cam height H:
Service Limit: (IN.) : 36.48 mm (1.436 in)
 09900-20202: Micrometer (25 – 50 mm)
CAMSHAFT JOURNAL WEAR
• Determine whether or not each journal is worn down to the
limit by measuring the oil clearance with the camshaft
installed in place.
• Use the plastigauge 1 to read the clearance at the widest
portion, which is specified as follows:
 Camshaft journal oil clearance:
Service Limit: (IN. & EX.): 0.150 mm (0.0059 in)
 09900-22301: Plastigauge
09900-22302: Plastigauge
NOTE:
Install camshaft journal holders to their original positions.
(  3-98)
• Tighten the camshaft journal holder bolts evenly and diago-
nally to the specified torque.
 Camshaft journal holder bolt: 10 N·m (1.0 kgf-m, 7.0 lb-ft)
(EX.) : 35.08 mm (1.381 in)
ENGINE 3-29