Maintenance2751−4/A1
Winterthur Gas & Diesel Ltd.
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8) If the measured values are more than the limits given on the gauge (94122), you
can repair the valve spindle (see the data below).
9) If more than 3.0 mm is ground off, do step a) and step b) below:
a) Use a build-up welding procedure to repair the surface of the valve seat.
b) Grind the seating surface of the valve spindle again (see paragraph 2).
3. Corrosion
Corrosion can occur at the bottom of the valve plate when engines operate for a long
time (e.g. in rough weather conditions).
If the corrosion is less than or equal to 9.0 mm (see Fig. 2), the valve spindle can be
repaired.
Note: The repair procedure can only be done in a WinGD authorized repair
workshop.
Valve spindles cannot be repaired when the corrosion is more 9.0 mm, but can
continue to operate until the corrosion has a depth of 21 mm.
Exhaust Valve: Valve Head − Grind the Seating Surface
2015
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