Valve Seat: Service and Repair

Machining Valve Seats





Note: Before refacing the valve seats, check dimension "A" to avoid carrying out work that may be unnecessary since the wear limit has been exceeded.

Valve seats may be machined until the wear limit distance "A" = 14.5 mm is reached. (New part size: 13.65 + 0.45 mm)

If applicable test with a new valve. Distance "A" must not be exceeded, since otherwise the function of the hydraulic valve tappet could not be guaranteed.

The amount of metal removed should be limited to an absolute minimum, to prevent premature wear of part.