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7 12-13
SUBJECT
DATE
Fuel Cooler Leak Test Procedure - Three-Filter Fuel System
July 2013
Additions, Revisions, or Updates
Publication Number / Title
DDC-SVC-MAN-0084
Platform
Section Title
Change
DD Platform
Fuel Cooler Leak Test
Procedure - Three-Filter
Fuel System
Torque spec in step 4 was reduced to 3.5 N·m (30 lb·in.).
All information subject to change without notice.
7 12-13
Copyright © 2013 DETROIT DIESEL CORPORATION
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2 Fuel Cooler Leak Test Procedure - Three-Filter Fuel System
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Fuel Cooler Leak Test Procedure - Three-Filter Fuel System
Test as follows:
Table 1.
Service Tools Used in This Test
Tool Number
Description
J-45982-7
Air Pressure Regulator
W470589139100
Fuel Cooler Leak Test Plate
NOTE: This test is used only for the Three-Filter Fuel System.
WARNING: PERSONAL INJURY
To avoid injury, never remove any engine component while the engine is running.
1. Remove the fuel cooler from the fuel filter module. Refer to section "Removal of the Fuel Cooler - Three-Filter
System".
2. Thoroughly clean the surface of the fuel cooler.
3. Install W470589139100 Fuel Cooler Leak Test Plate (1) onto the fuel cooler using supplied mounting bolts.
4. Gradually tighten bolts in a cross pattern until a torque of 3.5 N·m (30 lb·in.) is achieved.
5. Connect J-45982-7 air pressure regulator to W470589139100 Fuel Cooler Leak Test Plate and turn the regulator
counter clockwise until regulator stops.
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All information subject to change without notice.
Copyright © 2013 DETROIT DIESEL CORPORATION 7 12-13
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WARNING: PRESSURIZED AIR AND FLYING PARTICLES
To avoid injury to eye or face, wear a face shield or goggles when conducting a pressure test.
6. Attach shop air supply to the J-45982-7 air pressure regulator and turn the regulator clockwise until the gauge on the
tool reads 10 psi.
7. Close the shut-off valve on the J-45982-7 air pressure regulator and disconnect the shop air supply.
NOTE: If air bubbles are present between the fuel cooler leak test plate and the fuel cooler, it may be necessary
to tighten the mounting bolts. Only tighten enough to prevent air from escaping between the fuel cooler and the
fuel cooler leak test plate.
8. Submerge the fuel cooler into a tank filled with warm water and verify no leaks are present between the fuel cooler and
the fuel cooler leak test plate.
9. Continue to monitor the fuel cooler for one minute and observe if air bubbles escape continuously from the fuel cooler.
a. If no air bubbles are present, reinstall the fuel cooler. Refer to section "Installation of the Fuel Cooler - ThreeFilter System".
b. If air bubbles are present, replace the fuel cooler. Refer to section "Installation of the Fuel Cooler - Three-Filter
System".
All information subject to change without notice.
7 12-13
Copyright © 2013 DETROIT DIESEL CORPORATION
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