Egr Cooler Ports Setup - Detroit Diesel Series 60 EGR Technician Manual

TEST F
Engines equipped with a tube and shell bolted flanged cooler that have a coolant-lost complaint
need to be inspected for leaks from other sources. The spring wire hose clamps are a possible
coolant leak path, and should be inspected. If the spring wire clamps are damaged, service kits are
available to replace the damaged components.
A standard test to pressurize the coolant system and investigation of overall coolant system
should have been performed prior to inspecting the cooler. There may be other components of
the engine that are responsible for the loss of engine coolant.
NOTE:
Coolers with internal leaks usually show signs of a white coolant drop-out at the exhaust
side of the cooler, the Delta P Sensor lines, or at the delivery pipe to intake manifold
connector.
If the entire system has been tested, perform the following steps to inspect the cooler:
1. Use hoses, clamps, plugs, and a regulator to seal the cooler water inlet and water outlet
ports. See Figure 10-3.
Figure 10-3

EGR Cooler Ports Setup

2. Fill the exhaust side of the cooler with hot tap water. Allow the water to overflow until the
loose carbon has floated away allowing for a clear viewing of any bubbles. See Figure
10-4.
All information subject to change without notice. (Rev. June 2005)
7SE60 0506 Copyright © 2005 DETROIT DIESEL CORPORATION
SERIES 60 EGR TECHNICIAN'S MANUAL
10-21