Maintenance
5556−1/A1
Winterthur Gas & Diesel Ltd.
17/ 18
6. Oil Flow Check
WARNING
Injury Hazard: Do not
operate the engine. Injury
to personnel can occur.
WARNING
Injury Hazard: Before you
operate the turning gear,
make sure that no
personnel are near the
flywheel, or in the engine.
Note: The oil flows through the throttle
(1, Fig. 26) to the bottom housing
(2) and the guide piston (3).
1) The engine must be stopped.
2) Operate the turning gear to move the
roller of the related fuel pump in its
highest position (TDC).
1) Remove the oil drain pipe (4) from the
fuel pump.
2) Set to on the service pump.
3) After one minute, make sure that you
can see the oil flow as shown in
Fig. 26.
4) If the oil does not flow as shown, read
the data in Wärtsilä Technical Bulletin
RT−180.
5) Make sure that the the oil flows in the
inlet pipe (5).
Note: If the oil in the inlet pipe (5) does
not flow freely, it is possible that
there are unwanted particles in the
oil supply system. If you find
particles, remove them.
6) If there is incorrect oil flow, or no flow
on the drain bore do as follows:
a) If the oil cannot flow freely, flush
the bores with e.g WD−40.
b) If there is no oil flow, use a heat
gun to apply heat to the clogged
drain bore.
c) Use a small drill bit to open the
bore.
d) Remove the particles with a nylon
brush.
7) Install all unions and plugs.
8) Connect the oil drain pipe (4) and (5) to
the fuel pump.
Fuel Pump: Disassemble, Assemble
2015−08
4
WCH02790
3
1
2
WCH02790
Fig. 27
Oil Flow
4
5
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