WÄRTSILÄ RT-flex50-D, Maintenance Manual

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Maintenance
8733−1/A1
RT-flex50-D
Wärtsilä Switzerland Ltd
4/ 4
F
G
H
016.739/08
016.739/08
016.739/08
3
x
DF
94870c 94870a
1. 2.
HD 94870b
⇒
Remove claw 5 (Fig. ’B’).
⇒
Fix fuel pressure pipe 3, e.g. in a vice.
⇒
Screw on counter nut 94870c until it reaches the
thread end of the fuel pressure pipe.
⇒
Turn screw-on sleeve 94870a up to the counter nut.
⇒
Lock the screw-on sleeve with the counter nut.
⇒
Clamp grinding tool 94870b in hand drill ’HD’.
⇒
Slide grinding tool into the screw-on sleeve
until it slightly touches the fuel pressure pipe.
⇒
Let the grinding tool rotate with a max. speed
of 1500 rpm and grind for 3 to 5 seconds.
⇒
Withdraw the grinding tool from the screw-on sleeve
and blow out both parts with pressurized air.
⇒
Verify the surface quality of sealing face ’DF’ and if
necessary repeat the regrinding process using a
fresh emery cloth ’EC’.
Remark: In case of big notches the tube has to be short-
ened in order to restitute a clearance of ’x’ = min. 0.5 mm
between the countersunk screw and the end face.
⇒
Remove counter nut and screw-on sleeve.
⇒
After grinding thoroughly clean the fuel pressure
pipe.
2010
Fuel Pressure Piping: Removing, Fitting and Regrinding of Sealing Faces