Page 24
DESCRIPTION AND OPERATION
Exhaust gases exiting the EGR valve are hot,
near 1200
°
F (649
°
C). As such, the two tubes and
four clamps are made of stainless steel to provide
maximum service life. The hot tube section has
an integral bellows that allows for expansion and
contraction as engine temperatures change.
Wire-mesh O-rings along with V-band clamps
(Figure 13) are used for a gas-tight seal at the
tube connections. The V-band clamps are
different sizes depending on hot tube and cool
tube use, with the cool tube being the smaller of
the clamps. The seals are one-time use only and
must be replaced anytime a tube is removed in
service. Clamps used to connect the cool-side
tubes generally can be reused. However, for the
hot-side tube connections, the clamps can be
reused, but the T-bolt and nut should not be
reused. Threads of the clamp bolts used in the
latter connections are prone to corrode in the
hotter environment. When removed for service,
the threads can be damaged making it impossible
to properly torque and get a gas-tight seal with
the new connection.
The EGR hot tube clamp retaining nut may gall
on the threads of the T-bolt at clamp removal.
Whenever a hot tube clamp has been in-service
and is removed, always install a
new
T-bolt and
nut. The EGR hot tube clamps should not be
replaced unless a clamp component, other than
the T-bolt and nut, is damaged.
13
Figure 13 — EGR Tube Clamps
1. Cool Tube Clamp
2. Hot Tube Clamp
5-111.bk Page 24 Monday, July 10, 2006 2:26 PM
Summary of Contents for ASET AC
Page 6: ...TABLE OF CONTENTS Page iii TABLE OF CONTENTS 5 111 bk Page iii Monday July 10 2006 2 26 PM...
Page 14: ...INTRODUCTION Page 1 INTRODUCTION 5 111 bk Page 1 Monday July 10 2006 2 26 PM...
Page 23: ...Page 10 NOTES 5 111 bk Page 10 Monday July 10 2006 2 26 PM...
Page 96: ...COMPONENT LOCATOR Page 83 COMPONENT LOCATOR 5 111 bk Page 83 Monday July 10 2006 2 26 PM...
Page 99: ...Page 86 NOTES 5 111 bk Page 86 Monday July 10 2006 2 26 PM...
Page 100: ...TROUBLESHOOTING Page 87 TROUBLESHOOTING 5 111 bk Page 87 Monday July 10 2006 2 26 PM...
Page 140: ...MAINTENANCE Page 127 MAINTENANCE 5 111 bk Page 127 Monday July 10 2006 2 26 PM...
Page 153: ...Page 140 NOTES 5 111 bk Page 140 Monday July 10 2006 2 26 PM...
Page 383: ...Page 370 NOTES 5 111 bk Page 370 Monday July 10 2006 2 26 PM...
Page 479: ...Page 466 NOTES 5 111 bk Page 466 Monday July 10 2006 2 26 PM...
Page 480: ...SPECIFICATIONS Page 467 SPECIFICATIONS 5 111 bk Page 467 Monday July 10 2006 2 26 PM...
Page 505: ...Page 492 NOTES 5 111 bk Page 492 Monday July 10 2006 2 26 PM...
Page 513: ...Page 500 NOTES 5 111 bk Page 500 Monday July 10 2006 2 26 PM...
Page 519: ...Page 506 NOTES 5 111 bk Page 506 Monday July 10 2006 2 26 PM...
Page 520: ...APPENDIX Page 507 APPENDIX 5 111 bk Page 507 Monday July 10 2006 2 26 PM...
Page 528: ...INDEX Page 515 INDEX Index fm Page 515 Monday July 10 2006 2 48 PM...
Page 535: ...Page 522 NOTES Index fm Page 522 Monday July 10 2006 2 48 PM...