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JKli
ENGINES
CATALYTIC CONVERTER SYSTEMS
S E E
I.S.
N
O
T
E
S
GENERAL INFORMATION
The stainless steel catalytic converter body is
designed to last the life of the vehicle.
Excessive heat can result in bulging or other
distortion, but excessive heat will not be the fault
of the converter.
A fuel system, air injection system or ignition
system malfunction that permits unburned fuel
to enter the converter will usually c a u s e
overheating.
If a converter is heat-damaged, correct the
cause of the damage at the same time the
converter is replaced.
Also, inspect all other components of the
exhaust system for heat damage.
DUAL BED (TWO and COC) MONOLITHIC-TYPE
CONWERTER
Remove the converter.
NOTE: It may be necessary to heat the rear
exhaust pipe to facilitate converter removal.
CONWERTER INSTALLATION
Install the replacement converter.
Install the clamp over the converter outlet-rear
exhaust pipe junction and tighten the nuts with
61 N-m (45 ft-lbs) torque.
Tighten the manifold flange bolts with 34 N-m
(25 ft-lbs) torque.
Install the DOWNSTREAM air injection tube and
tighten the clamps with 4 - 5 N-m (3 - 4 ft-lbs)
torque.
*
Lower the vehicle.
The dual bed monolithic-type converter catalyst
is not serviceable. If the converter fails to
function properly, the complete unit must be
replaced.
CONVERTER REMOVAL
Raise and support the vehicle.
Remove the converter-to-exhaust pipe clamp
and flange bolts.
Remove the DOWNSTREAM air injection tube.
B-300
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Troubleshooting
