Detroit Diesel Series 60 EGR Technician Manual page 150

DDEC V TESTING
TESTS
The following tests support the recommended troubleshooting flow for specific operational
concerns.
TEST A
Test A steps are as follows.
NOTE:
Two regulated air supply lines will be required to perform this test.
1. Remove the turbocharger to charge-air-cooler (CAC) pipe.
PRESSURIZED CHARGE COOLER SYSTEM
To avoid eye or face injury from flying debris, wear a face
shield or goggles.
2. Pressurize the CAC inlet to 207 kPa (30 psi) using special tool TLZ00100 or equivalent.
3. Using DDDL, monitor the boost pressure (psi).
[a] If the pressure is below 187 kPa (27 psi), visually inspect the CAC, hoses, and the
delivery tube for leaks. Repair as necessary.
[b] If the pressure is 187 kPa (27 psi) or higher, continue to step 4.
4. Disconnect the EGR actuator oil line.
NOTE:
The oil line fitting is a 37 degree JIC #6 fitting.
5. Connect a regulated air supply line to the EGR actuator regulated to 69 kPa (10 psi).
6. Using DDDL, activate the EGR Valve (PWM #2) to 90%.
7. Monitor the boost pressure for pressure drops when the EGR valve opens.
10-10
All information subject to change without notice. (Rev. June 2005)
7SE60 0506 Copyright © 2005 DETROIT DIESEL CORPORATION