Jeep Cherokee 2000 Service Manual - page 1155
EXHAUST SYSTEM AND TURBOCHARGER
TABLE OF CONTENTS
page
page
DESCRIPTION AND OPERATION
EXHAUST SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . 1
EXHAUST HEAT SHIELDS . . . . . . . . . . . . . . . . . . 1
REMOVAL AND INSTALLATION
EXHAUST PIPE . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
MUFFLER AND EXHAUST TAILPIPE. . . . . . . . . . . 2
EXHAUST MANIFOLD AND TURBOCHARGER
(LHD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
EXHAUST MANIFOLD AND TURBOCHARGER
(RHD)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
INTAKE MANIFOLD. . . . . . . . . . . . . . . . . . . . . . . 10
SPECIFICATIONS
TORQUE SPECIFICATIONS . . . . . . . . . . . . . . . . . 10
DESCRIPTION AND OPERATION
EXHAUST SYSTEM
The basic exhaust system consists of an engine
exhaust manifold, turbocharger,exhaust down pipe,
exhaust pipe, exhaust heat shield(s), muffler and
exhaust tailpipe
The exhaust system uses a single muffler.
The exhaust system must be properly aligned to
prevent stress, leakage and body contact. If the sys-
tem contacts any body panel, it will transfer objec-
tionable noises originating from the engine to the
body.
When inspecting an exhaust system, critically
inspect for cracked or loose joints, stripped screw or
bolt threads, corrosion damage and worn, cracked or
broken hangers. Replace all components that are
badly corroded or damaged. DO NOT attempt to
repair.
When replacement is required, use original equip-
ment parts (or equivalent). This will assure proper
alignment and provide acceptable exhaust noise lev-
els.
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.
EXHAUST HEAT SHIELDS
Exhaust heat shields are needed to protect both
the vehicle and the environment from the high tem-
peratures (Fig. 1).
DO NOT allow the engine to operate at fast idle for
extended periods (over 5 minutes). This condition
may result in excessive temperatures in the exhaust
system and on the floor pan.
REMOVAL AND INSTALLATION
EXHAUST PIPE
WARNING: IF TORCHES ARE USED WHEN WORK-
ING ON THE EXHAUST SYSTEM, DO NOT ALLOW
THE FLAME NEAR THE FUEL LINES.
REMOVAL
(1) Raise and support the vehicle.
(2) Saturate the bolts and nuts at turbo down pipe
to exhaust pipe with heat valve lubricant. Allow 5
minutes for penetration..
(3) Disconnect bolts from exhaust pipe to turbo
down pipe (Fig. 2).
Fig. 1 Heat Shields
1 – EXHAUST MANIFOLD HEAT SHIELD
2 – DOWN PIPE HEAT SHIELD
XJ
EXHAUST SYSTEM AND TURBOCHARGER
11 - 1