Test B - Detroit Diesel Series 60 EGR Technician Manual

DDEC IV TESTING

Test B

Perform Test B as follows.
Diesel engine exhaust and some of its constituents are known
to the State of California to cause cancer, birth defects, and
other reproductive harm.
Always start and operate an engine in a well ventilated
area.
If operating an engine in an enclosed area, vent the
exhaust to the outside.
Do not modify or tamper with the exhaust system or
emission control system.
1. Run the engine on a dynamometer to get the engine hot. If a dynamometer is not available,
run the engine until hot (>170° F [76° C] coolant temperature).
2. Activate the VPOD outputs to 90% and then back it down to 7% using the DDDL.
Visually inspect the VNT and EGR valve for proper rod travel (full travel to stops).
[a] If the VNT is not functioning properly, verify VNT vanes are moving freely. For
detailed information, please visit the Detroit Diesel Technical Service Letter Web
Page at http://192.135.85.10/cust/sletr/revised_2004.asp and browse for Technical
Service Letter "04 TS-16".
[b] If the EGR valve is not functioning properly, replace the EGR valve.
[c] If both the VNT and EGR valve have proper movement the test is complete.
NOTE:
Repeat this step three times.
5-8
PERSONAL INJURY
7SE60 0506 Copyright © 2005 DETROIT DIESEL CORPORATION
All information subject to change without notice. (Rev. June 2005)