Wartsila RT-flex50-D User Manual

Maintenance3130−1/A1 RT-flex50-D
Wärtsilä Switzerland Ltd
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2. Preparation for taking a silicone fluid sample
⇒ Remove the casing of the vibration damper.
⇒ Turn the crankshaft in such a way that both screw plugs 3 of the vibration
damper are positioned horizontally to each other, whenever possible. If in this
position the screw plugs cannot be loosened , then the vertical position can
also be chosen.
⇒ Before removing the screw plug, carefully clean the area around it.
D Leave the damper in the mentioned position for at least two hours.
(If the oil sample is to be withdrawn from a removed vibration damper the
same conditions apply as regards the positions and the waiting time).
⇒ Using a flat caulker, hammer back the squeezed material in the corresponding
slot, which serves as locking means of screw plug 3.
⇒ Loosen the screw plug, but do not unscrew it yet, it must still seal.
3. Taking the sample
Prepare sample container ’PB’, i.e. remove both cap nuts 8 and examine the bore
which must be meticulously clean.
Remark: Two different threads are used for the sample bores of the Metaldyne
International and STE vibration dampers. Therefore, the ends of the sample con-
tainer are provided with different threads.
⇒ Remove the previously loosened screw plug 3, and screw in the sample con-
tainer ’PB’ instead.
⇒ After fully screwing in the sample container, screw it back by one turn to pre-
vent it from touching the flywheel inside the vibration damper.
⇒ Wait until the silicon fluid appears at the open end of the sample container.
Depending on the viscosity of the fluid, this may take some seconds only, or
much longer.
⇒ As soon as the silicon fluid flows out of the sample container, close its open
end with the respective cap nut.
⇒ Unscrew the sample container from the vibration damper housing (taking care
not to let escape the fluid), then immediately set in screw plug 3 with a new
O-ring 4 or sealing ring 5. (Avoid any leaking of silicon fluid.)
⇒ Screw the second cap nut on the sample container and tighten it moderately.
⇒ For the different vibration dampers tighten screw plugs 3 as follows:
− Metaldyne International with 25 Nm
− Hasse & Wrede with 20 Nm
− STE with 15 Nm (M10) or 45 Nm (M16)
⇒ Finally secure the screw plugs with centre punch mark ’KS’ (Fig. ’B’).
Taking a Silicone Fluid Sample
2010
CHECK

Wartsila RT-flex50-D Specifications

General

Brand	Wartsila
Model	RT-flex50-D
Category	Engine
Language	English