EXHAUST SYSTEM
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION
EXHAUST SYSTEM........................1
CATALYTIC CONVERTER....................2
EXHAUST PIPE...........................2
MUFFLER ...............................2
TAILPIPE................................3
HEAT SHIELDS ...........................3
DIAGNOSIS AND TESTING
EXHAUST SYSTEM........................4
REMOVAL AND INSTALLATION
EXHAUST PIPE...........................4
CATALYTIC CONVERTER....................5
MUFFLER ...............................5
TAILPIPE................................6
HEAT SHIELDS ...........................6
SPECIFICATIONS
TORQUE SPECIFICATIONS ..................8
DESCRIPTION AND OPERATION
EXHAUST SYSTEM
DESCRIPTION
CAUTION: Avoid application of rust prevention
compounds or undercoating materials to exhaust
system floor pan exhaust heat shields. Light over-
spray near the edges is permitted. Application of
coating will result in excessive floor pan tempera-
tures and objectionable fumes.
The gasoline engine exhaust system consists of
engine exhaust manifolds, exhaust pipes, catalytic
converter(s), extension pipe (if needed), exhaust heat
shields, muffler and exhaust tailpipe (Fig. 1).
The exhaust system must be properly aligned to
prevent stress, leakage and body contact. Minimum
clearance between any exhaust component and the
body or frame is 25.4 mm (1.0 in.). If the system con-
tacts any body panel, it may amplify objectionable
noises from the engine or body.
OPERATION
The exhaust system channels exhaust gases from
the engine and away from the vehicle.
Fig. 1 Exhaust System 4.7L, 5.2L and 5.9L Engines—Typical
1 – TAILPIPE
2 – MUFFLER HANGER BRACKET AND ISOLATOR
3 – CLAMP
4 – EXHAUST PIPE
5 – CATALYTIC CONVERTER
6 – EXTENSION PIPE
7 – MUFFLER HEAT SHIELD
DN EXHAUST SYSTEM 11 - 1
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