Maintenance2751−3/A1
Winterthur Gas & Diesel Ltd.
4/ 5
5. Valve Seat − Check
You do this procedure to make sure that the
sealing face of the valve spindle correctly
touches the sealing face of the valve seat.
1) Put a thin layer of engineer’s blue paste
on the sealing face of the valve spindle
(4, Fig. 5).
2) Put the valve spindle (4) in position in
the valve guide bush.
3) Put the wooden block (2) on the valve
spindle (4).
Note: During step 4) below, do not turn
the valve spindle (4) because this
can cause the sealing faces to
seize.
4) Tap the wooden block (2) with the
hammer (1) three of four times.
5) Use the feeler gauge (94122) to do a
check of the clearance between the
sealing faces of the valve spindle (4)
and valve seat (3).
Note: The clearance must be as shown
(S= 0.029 mm to 0.048 mm).
6) Remove the valve spindle (4) from the
guide bush.
7) Do a check of the engineer’s blue
paste. The blue paste must only show
on the inner part of the full
circumference of the valve spindle (see
View I
).
2016
Valve Seat − Replace / Grind
003.457/00
003.455/00
S = 0.029 mm to 0.048 mm
I
II
3
Engineer’s blue
paste mark
Fig. 5
1
2
4
4
3
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