Hatz 2 - 4 L 40, Инструкция

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5.3.3. Checking threaded connections
Check the tightness of all threaded connections
and take up slack if necessary, provided that
these can be reached during maintenance work.
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.
– Loosen pipe clip „1“ and remove with exhaust
pipe (Figure 26)
– 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.
5.4. Maintenance every
500
hours
of operation
5.4.1. Replace fuel pre-filter
Do not smoke and never bring a naked
flame near the fuel system when work-
ing on it.
– Place a suitable vessel under the filter to trap
escaping fuel.
– Close the fuel supply line.
Note:
Fuel pre-filter maintenance intervals depend on
the purity of the fuel used in the engine and
should be reduced to 250 hours if necessary.
Replace fuel pre-filter
– Pull fuel supply line „1“ off fuel pre-filter „2“ at
both sides (Figure 27).
– Insert the new pre-filter.
Important !
When installing a new filter, note the arrow indi-
cating the correct flow direction (depends on
whether the tank is mounted HIGH or LOW.
The pre-filter's installed position (direction of
flow) should be as vertical as possible.
– Open the fuel supply line.
Note:
To make starting easier, it is best to prime the
fuel delivery pump at lever „1“ until fuel is heard
to flow back through return line „2“ and into the
fuel tank (Figure 9).
– Operate the lever to check for leaks.
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