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Steps for seating valves:
- Apply a coarse abrasive paste to the valve face.
ATTENTION
DO NOT ALLOW THE PASTE TO PENETRATE IN THE SPACE
BETWEEN THE VALVE STEM AND THE VALVE GUIDE.
- Apply acid with molybdenum disulphate to the valve stem.
- Fit the valve into the cylinder head.
-Twist the valve until its face and its seat are uniformly
ground, then remove the paste immediately.
N.B.:
TO OBTAIN THE BEST VALVE SEATING RESULTS, SHAKE
SOFTLY IN THE VALVE SEAT WHILE TWISTING BACKWARDS
AND FORWARDS BY HAND.
- Apply a coarse abrasive paste to the valve face and repeat
the above steps.
N.B.:
MAKE SURE THAT ALL TRACES OF GRINDING PASTE ARE
REMOVED FROM THE FACE OF THE VALVE SEAT AFTER
EVERY VALVE SEATING OPERATION.
- Apply blue mechanical dye (Dykem) to the valve face
(b) .
- Fit the valve into the cylinder head.
- Press the valve through the valve guide and against its seat
to obtain a good contact.
- Measure the width of the valve seating (c) once again. If it is
outside that specified, rectify and grind the valve seat.
51
INSPECTION AND REPAIR
WORKSHOP MANUAL
Содержание DSR ADVENTURE 125
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