5 Maintenance
Troubleshooting
Particulate filter system fault warning light flashes and buzzer sounds when ignition is switched
on.
Possible cause
Remedy
Switch illumination in the start switch or emer-
gency stop switch for the particulate filter sys-
tem defective.
Check the indicator lamp: switch on the
glow plug start switch. Both switches should
light up briefly once, if not, exchange the
indicator lamp bulb. (Regeneration can still be
performed even though the lamp is defective;
acknowledge by pressing the start switch)
Fault in particulate filter system. Please contact your authorised dealer.
"Particulate filter alarm" indicator light illuminates and the truck only moves at crawling speed
Possible cause
Remedy
Load period of the particulate filter exceeds 8.5
h.
Regenerate particulate filter immediately.
Engine runs rough and loses power.
Possible cause
Remedy
Fuel supply insufficient. Blockages or air locks
in the fuel system, caused in winter by paraffin
wax segregation.
Renew fuel filter, check fuel line connections
for leaks and tighten clamping screws. In cold
climates, use winter fuel.
Pump/nozzle unit is not operating correctly.
Contact your authorised dealer.
Engine oil level too high.
Drain oil until oil level is at upper dipstick mark.
Very smoky exhaust.
Possible cause
Remedy
Bad sealing by coked or broken piston rings.
Contact your authorised dealer.
Irregular idling.
Possible cause
Remedy
Fuel supply problems.
Drain water from or change fuel filter. Check
fuel lines or fuel injector lines for leaks.
Engine speed incorrectly set.
The setting should be performed only by
a trained technician. Please contact your
authorised dealer.
198 Operating Instructions – 393 807 1001 EN – 08/2008
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