Maintenance
8733−1/A1
RT-flex58T-E
Winterthur Gas & Diesel Ltd.
3/ 3
3. Sealing faces − grind
To get a clean and smooth finish on the HP
injection pipe do the procedure that follows:
⇒ Put the template (94871A, Fig. C) on the
back of emery cloth.
⇒ Use the applicable grade of the emery
cloth related to the quantity of metal you
want to remove.
⇒ Use a pencil or a ball pen to make the the
inner shape.
⇒ Cut out accurately the shape.
⇒ Remove the four screws (T2) and the
grinding tool (94871).
⇒ Apply Molyslip Copaslip paste to the
threads and faces of the four
screws (T2).
⇒ Remove the cover (T1).
⇒ Put the emery cloth you cut out into the
grinding tool (94841).
⇒ Put the grinding tool (94841), emery
cloth and the cover (T1) in position on the
HP injection pipe (1).
⇒ Torque symmetrically the four screws
(T2) to 2 Nm.
⇒ Put the HP injection pipe (1) in a vice, as
vertically as possible.
⇒ Adjust the speed of the hand drill
between 200 rpm and 500 rpm.
⇒ Align the hand drill and the grinding
tool (94841) accurately with the HP
injection pipe (1) as shown.
⇒ Use light pressure and start grinding.
⇒ Regularly remove unwanted material from the grinding tool (94871).
⇒ Make sure that the circular marks around the sealing face of the pipe are
concentric.
⇒ Make sure that the circular marks around the sealing face of the pipe are
concentric.
⇒ Change the emery cloth for a smoother grade, then do the procedure above
again until you get a smooth finish.
⇒ Replace the emery cloth with a polishing cloth as a last step to polish the HP
injection pipe.
⇒ Clean the HP injection pipe (1).
⇒ If necessary, do the procedure above for the other HP injection pipes.
2015−08
HP Pipe to Injection Valve: Removing, Fitting and Regrinding of Sealing Faces
WCH02726
94871A
SF
T2
94871
T1
1
1
94871
Emery Cloth
Emery Cloth
Hand Drill
D
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