Fuel system
51
Fuel prefilter with water separator
Caution:
Always maintain conditions of absolute
cleanliness when working on the fuel
system.
Fit fuel connections with sealing caps.
The smallest particles of dirt in the fuel
system can lead to total failure of the
injection system.
The fuel pre−filter supplied by MAN must
not under any circumstances be replaced
by a different make.
For CR engines, a fuel pre−filter with water
separator is supplied loose (Manufacturer:
MANN&HUMMEL).
This must be installed in the fuel feed from the
tank to the engine.
The fuel pre−filter is designed as a reversible
double filter.
À Drain plug with left−hand thread
Á Filter bowl
 Filter cartridge
Note:
Note the lever position of the 3−way valve.
Handle in position:
A continuous operation
(both filter halves switched on)
B left side switched off
C right side switched off
Connecting hoses to fuel pre−filter
To connect the fuel hoses of the tank − fuel pre−-
filter and the fuel pre−filter − engine, screw fittings
are delivered with the equipment; these can be
combined depending on the installation situation.
The fuel inlet is marked on the fuel pre−filter
by IN".
The fuel outlet can be positioned by choice either
on the same side as the fuel inlet or on the
opposite side. The respective free outlet opening is
to be provided with a blanking screw.
À Blanking screw M30x1.5
Á Sealing ring
 Screwed socket M30x1.5 / M30x2
à Muff L22 A4C, DIN 3952
C
B
A
3
2
1
1
2 3
4
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