Maintenance
2751−3/A1
Winterthur Gas & Diesel Ltd.
3/ 5
4. Valve seat − grinding
Use only the tool 94291 (see Fig. 3) to grind
the valve seats.
1) Read the data in the manufacturer’s
manual for the tool 94291.
2) Put the valve seat (1) in the correct
position on the tool 94291.
3) Put the template 94279 on the valve
seat (see Fig 4).
Note: The data on the template 94279
shows the maximum permitted
limits for the valve seat (1).
4) Measure the distance between
template and valve seat.
5) If the measured values are more than
the limits given on the gage 94122, you
must replace the valve seat (1).
6) If the values are less than the limits
given, do the procedure that follows:
7) Use the tool 94291 to grind the sealing
face of the valve seat (1). Make sure
that you get a smooth and flat surface.
8) Keep the valve seat angle to between
30°0' and 30° 2’.
2015
Valve Seat − Replace / Grind
94291
1
WCH02361
94279
WCH02361
1
1
Between:
30°0' and 30°2’
II
I
Fig. 3
Fig. 4
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