1-74 SHB WL34 * 2.0
1 Maintenance
Exhaust gas treatment
Indicator lights
Indicator lights indicate the operating states of the regeneration:
29 (illuminates): High exhaust gas temperature.
• This indicator light illuminates during regeneration. The indicator light
goes out once regeneration is over and the exhaust system has cooled
down.
27 (illuminates): Regeneration of the diesel particulate filter necessary.
• The control lamp illuminates if regenerating the diesel particulate filter
is necessary.
- Regeneration can be started manually.
- Regeneration is automatically started.
27 (illuminates) and 22 (flashes): Maximum loading of the diesel
particulate filter reached.
• The loading of the diesel particulate filter is between 100 % and 140 %.
The engine output is reduced. Regeneration of the diesel particulate
filter necessary.
- Regeneration can be started manually.
- Regeneration is automatically started.
27 (illuminates), 22 (flashes) and 23 (illuminates): Max. load of the diesel
particulate filter exceeded.
• The loading of the diesel particulate filter is too high. Engine shuts
down every 30 seconds.
- A regeneration or repair can only be performed by authorized
Perkins distribution partners.
28 (illuminates): Regeneration of the diesel particulate filter interrupted.
• The indicator light illuminates if regeneration has been interrupted.
- Regeneration can be started manually.
Operating states of the regeneration
• If the engine is operated with sufficient load, passive regeneration
occurs during operation. This regeneration has no effect on the perfor-
mance of the vehicle.
• If the load of the engine is insufficient, the diesel particulate filter
collects soot. A regeneration automatically starts upon reaching a
certain soot load and operationally warm engine. The control lamp 29
indicates that a regeneration is occurring.
• If the automatic regeneration is interrupted too often, the soot load in
the diesel particulate filter continues to rise. The control lamp 29
indicates that a regeneration is necessary.
• If this regeneration is also interrupted, the soot load rises to a level
where the engine output is reduced to a maximum of 1800 rpm or the
maximum torque is reduced by 50 %. In addition, the control lamp
flashes 22. The engine light flashing signals that it is the last chance for
the regeneration.
• If this regeneration is also interrupted, the control lamp 29, control
lamp 22 and control lamp 23 illuminate. The engine shuts down every
30 seconds. A regeneration or repair can only be performed by autho-
rized Perkins distribution partners.
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