Piston Inspection - Honda VTR1000F Service Manual

PISTON INSPECTION
Inspect the piston rings for movement by rotating
the rings. The rings should be able to move in their
grooves without catching.
Push the ring until the outer surface of the piston
ring is nearly flush with the piston and measure the
ring-to-ring groove clearance.
SERVICE LIMITS: Top: 0.115 mm (0.0045 in)
Second: 0.085 mm (0.0033 in)
Insert each piston ring into the bottom of the cylin-
der squarely using the piston.
Measure the ring end gap.
SERVICE LIMITS: Top: 0.55 mm (0.022 in)
Second: 0.70 mm (0.028 in)
Oil (side rail): 0.90 mm (0.035 in)
Measure the piston pin O. D. at piston and con-
necting rod sliding areas.
SERVICE LIMIT: 23.984 mm (O.9443 in)
Measure the piston pin hole I. D.
SERVICE LIMIT: 24.03 mm (O.946 in)
Calculate the piston-to-piston pin clearance.
SERVICE LIMIT: 0.046 mm (O.0018 in)
CRANKSHAFT/PISTON/CYLINDER
12-9