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M. Aftertreatment Device
Check and Clean Aftertreatment Device
--- as required
IMPORTANT:
Check and clean flammable materials on the area
around the Aftertreatment device.
Condensation for dew may blow out from the
exhaust outlet of the aftertreatment device and
black deposition may be observed; it is not a
malfunction.
Do not disassemble the base machine support parts and
sensors.
When the machine is operated in dusty areas, refer to the page
9-1 "Maintenance Under Special Environmental Conditions".
1. Open the right and left side cover.
2. Check exhaust pipe (1) and bellows pipe (2) for cracks.
Check the aftertreatment device units for loose or
disconnection.
Check the lagging cover for breaks.
3. Check the connectors and harnesses of NOx sensors
(3), temperature sensors (4) and dosing module (5) for
abnormality.
4. Close the side cover.
MAINTENANCE
3
7-139
1
2
4
90Z7B_SCR_SN
90Z7B-7-105-1
5
3
4
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