Derbi Dirtboy 10, Руководство по ремонту

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34
I
NSPECTING THE CAM SHAFT
- Ensure that the camshaft bearings are not abnormally
worn.
- If any measurements or values are not as specified, pro-
ceed to replace the defective parts.
N.B.
A BALL BEARING IS PITTED ON BEARING «A»; CONSE-
QUENTLY, BEARING «B» IS MORE IMPORTANT BECAUSE IT
WORKS DIRECTLY ON THE ALUMINIUM OF THE CYLINDER
HEAD.
C
HARACTERISTIC
Standard diameter - Bearing A:
Ø 12+0,002+0,010 mm
Standard diameter - Bearing B:
Ø
16-0,015-0,023mm
Minimum allowable diameter - Bearing A:
Ø
11,98mm
Minimum allowable diameter - Bearing B:
Ø 15,96 mm
Standard height - Intake:
25,935
mm
Standard height - Exhaust:
25,935
mm
Maximum allowable axial play:
0,5
mm
- Ensure that the rocker arm pivot is not worn or scored.
- Measure diameter «A».
- Measure the inside diameter of each rocker arm «B».
- Check that the cam contact shoe and the adjuster articula-
ted cap are not worn.
ENGINE EE
- CYLINDER ASSY. AND TIMING SYSTEM
ENGINE
- CYLINDER ASSY. AND TIMING SYSTEM
I
NSPECTING THE CAM SHAFT