Maintenance and care
53
Fuel system
Fuel
If Diesel fuel which contains moisture is used the injection system and the cylinder liners
/ pistons will be damaged. This can be prevented to same extent by filling the tank as
soon as the engine is switched off while the fuel tank is still warm (formation of con-
densation is prevented). Drain moisture from storage tanks regularly. Installation of a wa-
ter trap upstream of the fuel filter is also advisable. Do not use any additives to improve
flow properties in winter.
Injection pump
Neither the injection pump nor the control unit must be modified in any way. If the lead
seal is damaged the engine warranty will become null and void.
Faults
We urgently recommend that you have faults in the injection pump rectified only in an au-
thorized specialist workshop.
Cleaning fuel pre-cleaner
Strip the fuel pre-cleaner:
D Remove filter housing À
D Wash out filter housing À and gauze
filter Á in clean Diesel fuel and blow
them out with compressed air
D Reassemble using new seal
D Screw on filter housing and tighten it to
10–12 Nm
1 2
D Actuate plunger of hand priming pump
until the overflow valve of the injection
pump opens audibly
D Screw in the tappet of the hand pump
again and tighten it
D Start engine
D Check fuel pre-cleaner for leaks
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