Operation Manual

Job Card No.:
Engine:
Filing No.:
Turbocharger Turbine
0178-43-10 2008
© 0885
06.13.01 Page 1 of 2
S/BVM 628
Servicing
Cleaning the turbine during running of the engine on
blended or heavy fuel.
Periodic scavenging of the turbine with fresh
water prevents the formation of heavy carbon
deposits on the turbine blading, and hence
excessive engine exhaust temperature, plus
increased turbocharger bearing loads due to
unbalance. Special attention is therefore to be
given to the following servicing instructions.
Job:
1. Reduce engine power until an exhaust gas
temperature of 250 - 370°C after cylinder is obtai-
ned.
2. To avoid water collecting in the turbine outlet
housing, open drain pipe (4) by screwing off cap
nut (5), and check that this pipe is free (exhaust
gas must emerge).
If necessary, push a thick wire through the depo-
sits.
Wear gloves as protection against hot exhaust
gases.
3. Connect hose (3) between turbine scavenging
feed pipe and water pipe and turn on pressure.
4. Slowly open scavenging nozzles (1).
Should, directly after release of water supply, no
water and/or steam come out of drain pipe (4),
stop scavenging at once and check that drain
pipe is free and that water passes to the scaven-
ging nozzles.
Failing this, water level in turbine housing will rise
and reach the bearings, resulting in possible da-
mage.
5. Scavenging time: 5 - max. 10 minutes.
6. Close scavenging nozzles.
7. Disconnect hose (3) at turbine scavenging feed
pipe.
Tools:
- Standard tools
- Hose 1/2"
Detergent:
- Fresh water
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