Valve Guide, Ream
| Valve stem diameter (I): | |
|---|---|
| Standard size | 6.000 to 6.015 mm |
| 1st oversize | 6.100 to 6.115 mm |
| 2nd oversize | 6.200 to 6.215 mm |
Use KM-831 depending on valve stem diameter.
Press guide block onto valve seat and dry-ream the valve guide, starting from the combustion chamber end.
Turn reamer once downwards. Turn reamer to the right only.
After processing the valve guide, repair valves with a larger valve stem diameter must be used. The valve stem of the repair valves is marked (arrow) (1).
Valves with the following valve stem oversize are available:
| Stem oversize | Valve stem diameter |
|---|---|
| 0 mm | 6.000 to 6.001 mm |
| 0.1 mm | 6.100 to 6.115 mm |
| 0.2 mm | 6.200 to 6.215 mm |
After reaming, the valve seat must be re-worked - see operation "Valve Seat, Cut".
Check valve indentation - see operation "Valve Indentation, Check".