SERIES 60 EGR TECHNICIAN'S GUIDE
Exhaust Gas Recirculation System Basic Checks
Perform the following basic steps to check the exhaust gas recirculating system.
For all EGR related concerns (may include exhaust smoke complaints), perform the following
steps. If any corrections are made as a result of these checks, test the unit again before proceeding
further:
Basic checks for all Series 60 EGR engines require the following tools:
1,000 Ohm resistor (low watt)
DDR suite 8 or DDDL version 4.2 or higher
Volt Ohm Meter
Pressure gage 0–200 psi
Pressure gage 0–100 psi
Check Delta P Sensor
Follow these steps to check the Delta-P sensor:
1. Turn ignition ON.
2. Plug in DDR/DDDL.
3. Read Delta-P counts (EGR DPS)
[a]
If Delta-P counts read 86–135, verify that the EGR pipes and hoses are correctly
assembled from the EGR tube to the Delta-P sensor. Reversed hoses or pipes will
create black smoke and surging. Go to step 3[b].
[b]
Also inspect carefully for split or leaking pipes or hoses in the EGR mixer tube from
the EGR cooler to the intake manifold. If hoses/pipes are correct,
Check VPOD
Output Pressure
.
[c]
If counts do not fall within the 86–135 range, replace Delta-P sensor; then go to Test.
All information subject to change without notice.
(Rev. April 2004)
5-9
7SE60 0404
Copyright © 2004 DETROIT DIESEL CORPORATION