5-18 BA 50Z3/6003 en – Edition 4.3 * * 5003b520.fm
Maintenance
The diesel particulate filter must be regenerated before the maximum
authorized threshold value is reached. This can be achieved by running the
machine at high capacity (high diesel engine output requirement)*. If the
pressure does not drop and the maximum authorized threshold value (– see
Alarm messages on page 5-20) is reached, stop the machine and regenerate
the diesel particulate filter externally. Contact an authorized workshop.
* This can cause the exhaust gas back pressure to rise even more, however soot combustion should then cause this pressure
to return to the authorized range. The engines of the 50Z3 and 6003 machines are equipped with an exhaust gas recirculation
valve that closes if the engine is cold and under high load, and therefore significantly raises the exhaust gas back pressure.
Avoid these operating conditions if the pressure is already near the limit.
Cold starting
In order to avoid damage to the particulate filter system, warm up the engine at
low idling engine speed without load for about 15 minutes**. This warm-up
phase is of crucial importance for the 50Z3 and 6003 machines: on these
machines, the exhaust gas recirculation valve is closed when the engine is
cold, which causes the exhaust gas back pressure to rise considerably. Work
cannot start unless the engine has reached its operating temperature and
there is a sudden and very significant drop in counterpressure.
** Approximate value; at lower temperatures, a longer warm-up phase may be necessary, which can be considerably reduced
at high temperatures.
Bleeding the diesel engine fuel system
On machines equipped with diesel particulate filters, the throttle screw connection pre-ten-
sions the system (– see Throttle screw connection on page 5-16) in order to create
enough pressure for the diesel fuel injection nozzle of the particulate filter. In order to bleed
the system, connect the minimess hose onto the throttle screw connection and insert the
other end into a container to collect the fuel as it drains. Remove the hose again as soon
as there are no more bubbles in the fuel draining from the minimess port. The machine can
then be started.
To Next Page
Loading...
Need help?
General
