An excessively high coolant temperature can
damage the engine.
Normal coolant temperature during operation is
approximately 94°C/200°F.
The alarm levels are set in the engine control
unit. The default setting for the lowest and high-
est limit values for high coolant temperature are
95°C/203°F and 105°C/221°F respectively.
The high coolant temperature alarm has the fol-
lowing functions:
• Alarm only.
• Alarm and torque reduction at the lowest lim-
it value.
• Alarm at the lowest limit value and engine
shutdown at the highest limit value.
• Alarm, torque reduction at the lowest limit
value and engine shutdown at the highest lim-
it value.
• Alarm at the lowest limit value and engine
shutdown at the highest limit value with the
possibility of engine shutdown override con-
trol.
• Alarm, torque reduction at the lowest limit
value and engine shutdown at the highest lim-
it value, with the possibility of engine shut-
down override control.
If run for extended periods under an extremely
light load, the engine may have difficulty in
maintaining the coolant temperature. At an in-
creased load the coolant temperature rises to the
normal value.
Oil pressure
Information about the normal oil pressure and
lowest permitted oil pressure is contained in the
Lubrication system
section in the Technical Data
chapter.
The engine management system has the follow-
ing alarm levels:
• At an engine speed below 1,000 rpm and an
oil pressure below 0.7 bar/10.2 psi.
• At an engine speed above 1,000 rpm and an
oil pressure below 2.5 bar/36.3 psi for longer
than 3 seconds.
The incorrect oil pressure alarm has the follow-
ing functions:
• Alarm only.
• Alarm and torque reduction by 30%.
• Alarm and engine shutdown.
• Alarm and engine shutdown override control.
High oil pressure (above 6 bar/87 psi) is normal
when starting a cold engine.
Charging indicator lamp
If the lamp comes on during operation:
• Check and adjust the drive belt according to
the section Checking the drive belt
.
If the charging indicator lamp is still on, this
could be due to an alternator fault or a fault in the
electrical system.
Belt transmission
When the belt transmission is new, it may make
a squeaking noise when running. The noise is
normal and disappears after 50-100 hours of op-
eration. The noise does not affect the service life
of the belt transmission.
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