Volvo TAD1240GE, Operator'S Manual

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Operation
18
Low-load operation
Avoid prolonged operation at idle or at low loading.
This can cause increased oil consumption and even-
tual oil leakage from the exhaust pipe due to oil lea-
king past the turbocharger seals and following with the
charge air into the intake tract during low turbo pressu-
re conditions.
A consequence of this is a build-up of carbon deposits
on the valves, tops of the pistons, in the exhaust
ports and the exhaust turbo.
Low loads also result in a combustion temperature
that is so low that complete combustion of the fuel
can not be guaranteed. Possible consequences of this
include fuel dilution of the lubrication oil as well as lea-
kage from the exhaust pipe.
If the following items are performed as a comple-
ment to the normal care of the engine there will be
no risk of operational disturbances due to opera-
tion at low loads:
•
Keep low load operations to a minimum. If
periodic test operation of the engine is done
without load every week, the operating time
should be limited to approximately 5 minutes.
•
Operate the engine under full load for
approximately 4 hours once a year. Carbon
deposits in the engine and exhaust system will
thereby have the chance to burn off.
Throttle
The throttle (A) is mounted on the right side of the in-
strument box. Avoid sudden and extreme changes in
throttle position.
Clutch
A clutch is optional. Engage the clutch at a
1000–1200 rpm max.
N = Neutral
E = Engaged