Fuel System; Cleaning Fuel Pre-Cleaner - Man D2868 LE433 Operating Instructions Manual

Fuel system

Fuel
If diesel fuel containing water is used, damage is caused to the injection system. To some extent this can
be avoided by filling up with fuel after stopping the engine, while the fuel tank is still warm (prevention of
condensation of water). Regularly drain off water from storage tanks.
Caution:
Use only approved fuels, lubricants etc. (see brochure Fuels, lubricants etc."). Otherwise the liab­
ility for defects will become null and void!
Faults
We urgently recommend that malfunctions of the injection system be eliminated only by a workshop author­
ised to perform such work.

Cleaning fuel pre-cleaner

Danger:
Only service the fuel prefilter with the en­
gine switched off.
Close shut-off valves between engine and tank.
Strip the fuel pre-cleaner:
D Remove filter housing (3)
D Remove the sealing ring (1) from the filter hous­
ing (3)
D Wash out filter housing (3) and gauze filter (2)
in clean diesel fuel and blow them out with
compressed air
D Screw the filter housing (3) with strainer (2) and
new sealing ring (1) on the fuel pre-filter hous­
ing
D Torque tighten the filter housing to 10 Nm
Open shut-off valves between engine and tank.
D Screw on the hand pump plunger
D Actuate plunger of hand priming pump until the
overflow valve opens audibly
D Screw in and tighten plunger on hand pump
D Check fuel pre-cleaner for leaks
Maintenance and care
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