Modification 1 - Deeper O-Ring Location Into Egr Coolant Return Tube Plus Retaining Clip; Removal Of Egr Coolant Return Tube And Elbow; Installation Of Egr Coolant Return Tube And Elbow - Navistar INTERNATIONAL DT 466 Service Manual

Modification 1 – Deeper O-ring
Location into EGR Coolant Return
Tube plus Retaining Clip

Removal of EGR Coolant Return Tube and Elbow

CAUTION: To prevent engine damage, do not mix the
new longer leg EGR coolant return tube elbow with the
original short adapter end EGR cooler return tube.
The EGR coolant return tube and mating elbow were
redesigned as a production running change to locate
the elbow O-ring one inch deeper into the EGR
coolant return tube. Both the EGR coolant return tube
and EGR coolant return elbow were redesigned to
accomplish this. The EGR coolant return tube has
a one inch longer arm to locate the O-ring one inch
deeper into the EGR coolant return tube adapter end.
1. Drain coolant to a level below the cylinder head.
2. Remove bolt from EGR return tube located at
back of cylinder head. Retain bolt for reuse with
new EGR cooler return tube assembly.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
EGR COOLER AND TUBING
3. If applicable, remove two set screws or retaining
4. Remove EGR return tube and elbow as an
Installation of EGR Coolant Return Tube and
Elbow
1. Install two O-rings onto EGR cooler elbow and
CAUTION: To prevent engine damage, do not use
engine oil or any other petroleum based products on
EGR coolant return tube or elbow O-rings. These
O-rings are not compatible with petroleum based
lubricants.
EGES-265-2
Follow all warnings, cautions, and notes.
© 2009 Navistar, Inc.
clip retaining the EGR cooler elbow.
assembly by lifting it out of the EGR cooler.
one O-ring onto pilot of EGR coolant return tube
assembly.
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