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um DSR SM 125 - Valve Springs, Camshaft, and Timing Chain Inspection

um DSR SM 125
120 pages
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VALVES AND VALVE SPRINGS
1. Measurement:
- Free length (a) of spring.
Outside that specified => Renew .
Valve spring free length:
44,90 mm
2. Measurement:
- Spring contact face.
Wear/damage/scratches => Renew.
I NSPECTING THE CAMSHAFT
1. Check:
- Cam salients.
Grooves/scratches/blue colouring => Renew.
2. Inspect:
- Oil passage in the camshaft.
Obstructions => Blow through with compressed air.
V
52
INSPECTION AND REPAIR
WORKSHOP MANUAL

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