On 2-4L41 and 2-4M41 engines only
31
32
– Run the engine at full speed briefly once a day,
shortly after starting it. Check that indicator
light „5“ comes on briefly or, depending on
version, red zone „1“ is seen in the mechanical
maintenance indicator (Figures 31 and 32,
Chapter 5.4.2.).
On 4L42C and 4M42 engines only
33
– Increase the engine speed briefly to maximum
level and watch out for the pilot lamp „5“ to
flash. The following flashing code indicates
that maintenance work is required on the air
cleaner (Chapter 5.4.2).
7 short flashes (approx. 0.5 seconds) and
1 long flash (approx. 1.5 seconds)
5.2.3. Check the cooling air system
Severe contamination with dirt is a sign that the
air contains a high level of dust, and that the
maintenance intervals should be shortened
accordingly.
– Inspect the air inlet and outlet areas for severe
blockage with dirt, for instance leaves, heavy
dust deposits etc., and clean if necessary
(see Chapter 5.3.2.).
Temperature display „4“ (if fitted) resp. engine
diagnosis indicator „4“ lights up as soon as the
engine starts to overheat (Fig. 31 and 33).
Stop the engine immediately. (Chap. 5.3.2.).
25
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