5.2.4. Checking cooling air zone
Severe contamination is a sign that there are
large amounts of dust in the atmosphere and
that maintenance intervals should be reduced.
– Check the air inlet and outlet zones for block-
age by coarse material such as leaves, large
amounts of dust etc., and clean if necessary
(see chapters 2 and 5.3.4.).
– If a temperature warning light „4“ is provided,
it will come on if the engine overheats, fig. 25.
In this case, stop the engine immediately
(Chapter 4.3. and 5.3.4.).
5.2.5. Checking the water trap
The intervals at which you should check the
water trap depend entirely on the amount of
water in the fuel and the care taken when re-
fuelling. The normal interval is once a week.
30
– Loosen hexagon screw „1“ with approx. 2-3
rotations.
– Trap the drops which emerge in a transparent
vessel. Since water has a greater specific
gravity than diesel fuel, the water emerges be-
fore the diesel fuel. The two substances sepa-
rate at a clearly visible line.
– As soon as diesel only emerges at screw „1“,
this can be tightened again.
If an external water trap is attached, check its
water content every day, when the engine oil
level is checked. The water which has collected
is separated at a clearly visible line from the
diesel fuel above it.
31
– Open drain plug „1“ and drain the water out
into a suitable vessel.
– If the drain plug is difficult to reach, an exten-
sion hose can be attached to it.
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