Maintenance
2708−6/A1
Winterthur Gas & Diesel Ltd.
1/ 1
Sealing Face for the Prechamber − Grind
Tools:
1 Grinding device 94270−03
1 Stencil 94270−3D
1. Procedure
1) Make sure that the stop sleeve (2) is
attached to the spindle (1) of the device
(94270−03).
2) Use the applicable grade of emery
cloth related to the quantity of metal
you want to remove.
3) Put the stencil (94270−3D) on the
emery cloth.
4) Use a pencil or a ball pen to make the
inner shape (3).
5) Cut out accurately the shape (3).
6) Attach the shape (3) to the device
(94270−03) with the clamp (4) and the
the Allen screw (5).
7) Attach the device (94270−03) to the
cylinder cover as shown.
8) Attach an electric drill to the spindle (1).
9) Operate the electric drill at a maximum
of 500 rpm.
10) Apply a light pressure and start
grinding.
11) Regularly remove the unwanted
material from the device (94270−03)
and the bore (6).
12) Make sure that the circular marks
around the sealing face are concentric.
13) Change the emery cloth for a smoother
grade, then do step 3) to step 12) again
until you get a smooth finish.
14) Clean the bore (6).
Pilot Injection Valve
2018
Fig. 1
5
4
3
WCH00866
1
2
94270−3
94270−3D
6
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