lubrication is established. Connect the oil inlet
If engine oil becomes contaminated by water,
the turbocharger must be drained to prevent
sludge formation. It is recommended that after
an engine overhaul, an oil inlet filter (see "Engine
Service Manual") be installed and used during
the first 5 to 25 hours of operation and then
removed, as this filter can clog with carbon that
is normally suspended in the oil of a diesel
It is imperative that the air cleaner service
outlined in the Operators Manual be rigidly
followed because of the oil carry-over and power
losses that can be incurred with a restricted air
turbocharged engines are considerably greater
than for a non-turbocharged engine of the same
size running at the same speed. Air inlet
accessories must minimize the restriction at this
higher air flow and maintain performance of the
The engine crankcase breather should be
cleaned periodically to be sure that there is no
should be free from vibration or unusual noises.
The exhaust stack should be covered to prevent
water from entering and damaging the turbine
during shutdown periods or when unit is being
Periodic inspection of the compressor wheel
should be made to check for soft carbon
excessive end play.
COMPRESSOR CLEANING PROCEDURE
The frequency of cleaning the compressor end
of the turbocharger depends on the condition
under which the engine is operated. Before
cleaning, inspect the components for signs of
rubbing or other defects which might not be
evident after cleaning.
Refer to respective engine section for removal of
turbocharger from engine.
Remove the compressor housing ( and Key 9,
To prevent damaging the compressor wheel,
rest the unit on wooden blocks in a pan or
container for cleaning fluid. The compressor
wheel must be down and the shaft vertical.
NEVER REST THE WEIGHT OF THE UNIT ON THE
Fill the container only up to the edge of the
compressor housing, using a good grade metal
cleaner or equivalent. Never use a caustic
Do not allow the cleaning fluid to get to
the rotating housing.
After deposits have softened, remove with a soft
brush or plastic blade scraper.
Wash the compressor cover in cleaning fluid and
Assemble the compressor cover and install
turbocharger. Refer to "Engine Service Manual"
for installation procedures.
Printed in United States of America