Isuzu Trooper (1998-2002 year). Manual — part 542
6F–4
ENGINE EXHAUST
Three Way Catalytic Converter LH
Removal
1. Disconnect battery ground cable.
2. Raise the vehicle and support with suitable safety
stands.
3. Disconnect front O
2
sensor harness connector and
rear O
2
sensor harness connector (3)(4).
4. Remove exhaust front pipe fixing three stud nuts (2)
from exhaust manifold side and two nuts (6)(7) from
rear end of exhaust front pipe (9).
150R200006
Legend
(1) Gasket
(2) Front Exhaust Pipe Fixing Three Stud Nuts
(3) O
2
Sensor Harness Connector
(4) O
2
Sensor Harness Connector
(5) Gasket
(6) Front Exhaust Pipe RH Fixing Bolts and Nuts
(7) Front Exhaust Pipe Fixing Bolts and Nuts
(8) Gasket
(9) Front Exhaust Pipe LH
Installation
1. Install exhaust front pipe (9) and tighten three studs
nuts (2) and two nuts (6)(7) to the specified torque.
Torque
Stud nuts : 67 N·m (6.8 kg·m/49 lb ft)
Nuts(6) : 57 N·m (5.8 kg·m/42 lb ft)
Nuts(7) : 43 N·m (4.4 kg·m/32 lb ft)
2. Reconnect O
2
sensor harness connector (3)(4).
6F–5
ENGINE EXHAUST
Three Way Catalytic Converter RH
Removal
1. Disconnect battery ground cable.
2. Raise the vehicle and support with suitable safety
stands.
3. Remove torsion bar. Refer to removal procedure in
Front Suspension section.
4. Disconnect front O
2
sensor harness connector (6)
and rear O
2
sensor harness connector (3).
5. Remove front exhaust pipe fixing bolts and nuts (4).
6. Remove three stud nuts (2) from exhaust manifold
then remove the exhaust front pipe (7).
150R200007
Legend
(1) Gasket
(2) Front Exhaust Pipe Fixing Three Stud Nuts
(3) O
2
Sensor Harness Connector
(4) Front Exhaust Pipe Fixing Bolts and Nuts
(5) Gasket
(6) O
2
Sensor Harness Connector
(7) Front Exhaust Pipe RH
Installation
1. Install front exhaust pipe (7) and tighten three stud
nuts (2) and two nuts (4) to the specified torque.
Torque
Stud nuts : 67 N·m (6.8 kg·m/49 lb ft)
Nuts : 57 N·m (5.8 kg·m/42 lb ft)
2. Install the torsion bar and readjust the vehicle height.
Refer to the installation and vehicle height adjustment
instructions in the Front Suspension Section.
6F–6
ENGINE EXHAUST
Exhaust Silencer
Exhaust Silencer and Associated Parts
150R200030
Legend
(1) Exhaust Silencer
(2) Mounting Rubber
(3) Rear Exhaust Pipe
(4) Rear Exhaust Pipe Nuts
(5) Gasket
(6) Rubber Support
(7) Nut
(8) Exhaust Silencer Fixing Bolts
(9) Gasket
(10) Exhaust Silencer Fixing Nuts
(11) Exhuast Front Pipe
Removal
1. Disconnect battery ground cable.
2. Raise the vehicle and support with suitable safety
stands.
3. Remove rear exhaust pipe (3). Refer to Rear Exhaust
Pipe in this section
4. Remove exhaust silencer fixing bolts (8) then
disconnect exhaust silencer from front exhaust pipe
(11).
6F–7
ENGINE EXHAUST
5. Remove exhaust silencer mounting nuts (7) from
rubber support (6) chassis side then remove exhaust
silencer (1).
Installation
1. Install the exhaust silencer (1) and tighten two nuts
(12) to the specified torque.
Nuts: 16 N·m (1.6 kg·m/12 lb ft)
2. Install the exhaust silencer and tighten two bolts (8)
on front exhaust pipe to specified torque.
Bolts: 43 N·m (4.4 kg·m/32 lb ft)
3. Install the rear exhaust pipe (3) and tighten on
exhaust silencer to specified torque.
Nuts: 43 N·m (4.4 kg·m/32 lb ft)
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