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SECTION 5
OPERATING
THE
MACHINE
Page 12
•
STOPPING THE ENGINE
COOL ENGINE DOWN
Idle the engine
3
to
5
minutes before shutting it down. This
will allow lubricating oil and water to carry heat away from
the combustion chamber, bearings,shafts, etc.
This cooling-down period is especially important for the
turbocharger. The turbocharger contains bearings and seals
that are subject to high heat of combustion exhaust gases.
While the engine is running, this heat is carried away by oil
circulation. If the engineisstoppedsuddenly, the turbocharger
temperature may rise as much as 100 degreesF. The result of
this extreme heat may be seized bearings or loose oil seals.
IDLING
Long periods of idling are not good for an engine because
operating temperatures drop so low the fuel may not burn
completely. This will cause carbon to clog the injector and
piston rings.
If the engine coolant temperature becomestoo low, raw fuel
will wash lubricating oil off of cylinder walls and dilute the
crankcase oil so all moving parts will suffer from poor
lubrication.
NOTE: If the engine is not being used,shut it down.
SHUTDOWN
To shut the engine down after the cooling period turn the
combination switch (1IIust. 13) to the "OFF" position.
•
NOTE: Stop the engine immediately if any parts fail.
Practically all failures give some warning to operator before
parts fail and ruin engine. Many engines are saved because
alert operators heed warning signs (sudden drop in oil
pressure, unusual noise, etc.) and immediately shut down
engine.
A
delay of ten secondsafter a bearing failure causes a
knock and may result in a ruined crankshaft or allow a block
to be ruined by a broken connecting rod.
Never try to make the next trip or another load after the
engine indicates that something is wrong. It doesnot pay.
•
•
•
lIIust. 13
Combination Switch.
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