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ENGINE EXHAUST
AFTERTREATMENT
QUICK REFERENCE GUIDE
Three Position Regeneration Switch
Start
Depressing the button in the START
direction for 4 seconds will initiate a
parked regerneration.
Center
Center is the normal position of the switch.
The center position will allow an automatic
regeneration to occur.
Stop
When STOP is pressed the system will not regenerate
under any conditions.
Do not leave the switch in the Stop position unless you
need to cancel or stop regeneration.
Note: This information is for reference only. Consult the Aftertreatment
Supplement (Y53-6005) included with your vehicle for a complete
description of exhaust aftertreatment.
CONVENTIONAL
MODEL TRUCKS
Y53-6010 Printed in U.S.A. 4/07
Class Pays
WWW.PETERBILT.COM
Class Pays
WWW.PETERBILT.COM
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NOTE: THIS INFORMATION IS FOR REFERENCE ONLY. CONSULT THE AFTERTREATMENT SUPPLEMENT
*
(Y53-6005) INCLUDED WITH YOUR VEHICLE FOR A COMPLETE DESCRIPTION OF EXHAUST AFTERTREATMENT.
Exhaust System Warning Lamp/Icons
High Exhaust System Temperature – HEST
Warns the driver when exhaust temperature
is elevated.
Diesel Particulate Filter – DPF
Indicates when the DPF requires regeneration.
Check Engine
Indicates exhaust system operating conditions that
will cause engine de-rate.
Stop Engine
Indicates exhaust system operating conditions that
will force engine shut-down.
Exhaust System Warnings Operator Actions
1st Level Warning
DPF lamp is on steady. The DPF is becoming clogged with soot and needs
regeneration. If the warning is ignored the DPF will
become increasingly clogged.*
2nd Level Warning
DPF lamp flashes once every second. The DPF is becoming increasingly clogged with
soot, and requires regenerating soon. If the warning
is ignored the DPF will become increasingly clogged
and could result in an engine de-rate.*
3rd Level Warning
DPF lamp flashes.
Check Engine Warning lamp is on.
The engine de-rates power, because the DPF is
clogged with soot. The DPF requires immediate
regeneration. If the warning is ignored the vehicle
will soon begin an engine shutdown.*
4th Level Warning
Caterpillar Engine
DPF lamp flashes.
Check Engine Warning lamp is on.
Stop Engine lamp is on.
Cummins Engine
Stop Engine lamp is on.
The DPF and Check Engine warning lamps will
turn OFF.
Regeneration cannot be performed, and the engine
ECU will begin a shutdown sequence.
When the engine begins to shutdown, you CANNOT
initiate regeneration. Refer to the Engine
Manufacturer’s Operation and Maintenance Manual
for further instructions.
Dealership Service will be required.
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