Note:
Do not tighten the cylinder head nuts.
The adjusting screws at the engine
governor and on the injection system
are sealed with lacquer or with lead and are
not to be tightened or adjusted.
5.3.4. Cleaning of mesh insert in exhaust
pipe (additional equipment)
Exhaust system components will natu-
rally be hot and must not be touched
while the engine is running or until it has
cooled down after being stopped.
40
– Loosen pipe clip „1“ and remove with exhaust
pipe.
– Remove deposits in mesh insert „2“.
– Check mesh insert on chinks or fractures, re-
place if necessary.
Remark:
Engine operation for a longer period of time
without load or with less load can lead to de-
posits in the mesh insert. Shorten maintenance
interval.
5.3.5. Check water trap
(
On 4L42C and 4M42 engines only)
The water trap inspection interval depends
exclusively on the water contained in the fuel
and on the care applied in refuelling. It may be
admissible to extend the intervals, or it may be
necessary to considerably shorten the intervals.
41
– Release the drain plug „1“ and collect the
liquid in a transparent vessel.
If the drain plug is not easily accessible, an
extension piece of hose can be slipped on the
plug.
– If an insufficient amount of liquid leaves the
tank, release additionally plug „2“.
As water is heavier than diesel fuel, first the
water, then the fuel will escape. This is indicated
by the clearly visible separating line.
– If finally only fuel leaves through the port, the
drain plug „1“ can be closed again.
– Subsequently, re-tighten plug „2“.
Note:
If starting appears difficult, bleed the injection
system using the manual fuel pump (Chapter
4.1.2.)
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