Inspecting The Small End; Inspecting The Wrist Pin - Gilera Nexus 500 Workshop Manual

Nexus 500

Inspecting the small end

- Using a bore gauge, measure the connecting rod
small end diameter.
N.B.
IF THE CONNECTING ROD SMALL END DIAM-
ETER EXCEEDS THE STANDARD DIAMETER,
EXHIBITS WEAR OR OVERHEATING, PRO-
CEED TO REPLACE THE CRANKSHAFT AS
DESCRIBED IN CHAPTER CRANKCASE AND
CRANKSHAFT.
Characteristic
Standard diameter:
22 + 0.025 +0.015 mm

Inspecting the wrist pin

- Check the pin outside diameter using a micrometer.
Characteristic
Standard diameter:
22 0 - -0.004 mm
- Calculate the coupling clearance between pin
and connecting rod end.
Characteristic
Standard clearance:
0.015 ÷ 0.029 mm
- Measure the capacity diameter on the piston.
Characteristic
Standard diameter:
22 + 0.006 + 0.001 mm
Engine
ENG - 59