Maintenance work on the carrier
7.4 Fuel system
7 - 28 3 302 577 en Maintenance manual
GMK7450
16.08.2018
7.4.1 Checking fuel filter 1
Prerequisites – The truck crane must be level; à Operating manual.
– The engine must not be running and must be secured against unauthor-
ised use;
à P. 2 - 3.
Checking You can visually check the degree of contamination (6) of the internal
filters (5) through the transparent co
ver (1).
Visual inspection
• Clean the cap (1) with a cloth if necessary.
• Check that the fuel level (3) lies between the
lower ring (4) and the upper ring (2).
The fuel level (3) must always be higher
than the dark discolouration (6) of the
filter (5) due to the contamination.
This ensures that the fuel always flows
through the upper, clean region of the filter.
Degree of soiling
• Check the degree of soiling.
• Change the filter at the very latest when soil-
ing degree (D) is reached.
A 0% soiling:
Filter is new:
B 25% soiling.
C 50% soiling.
D 100% soiling:
Filter is full; replace.
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