Toyota 4-Runner 1985 Repair Manual page 147

EMISSION CONTROL SYSTEMS (CARB ) _ Thr.ee-~ay
Catalyst (TWC) System
. OXidation Catalyst (DC) System
EC-47
EC2902
Heat Insulator
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EC2903
EC0244
INSPECTION OF EXHAUST PIPE ASSEMBLY
1. CHECK CONNECTIONS FOR LOOSENESS OR DAMAGE
2. CHECK CLAMPS FOR WEAKNESS, CRACKS OR DAMAGE
A03065
INSPECTIOl\l OF CATALYTIC CONVERTER
CHECK FOR DENTS OR DAMAGE
If any part of protector is damaged or dented to the extent
that is contacts the catalyst, repair or replace it.
INSPECTION OF HEAT INSULATOR
1. CHECK HEAT INSULATOR FOR DAMAGE
2. CHECK FOR ADEQUATE CLEARANCE BETWEEN
CATALYTIC CONVERTER AND HEAT INSULATOR
REPLACEMENT OF CATALYTIC CONVERTER
1.
2.
REMOVE CATALYTIC CONVERTER
(a)
Jack up the vehicle.
(b)
Check that the converter is cool.
(c) Remove the bolts at the front and rear of the con-
verter.
(d) Remove the converter and gaskets.
INSTALL CATALYTIC CONVERTER
(a) Place new gaskets on the converter front and rear
pipes, and connect the converter to the exhaust pipes.
(b) Tighten the bolts.
Torque: Catalyst - Exhaust pipe
440 kg-em (32 ft-Ib, 43 N·m)