Isuzu KB P190. Manual - part 613

ENGINE EXHAUST  6F-3 

 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

When inspecting or replacing exhaust system components, 
make sure there is adequate clearance from all points on the 
underbody to prevent overheating the floor pan and possible 
damage to the passenger compartment insulation and trim 
materials. 
Check complete exhaust system and nearby body areas and 
rear compartment lid for broken, damaged, missing or 
mispositioned parts, open seams, holes, loose connections or 
other deterioration which could permit exhaust fumes to seep 
into the rear compartment or passenger compartment. Dust or 
water in the rear compartment may be an indication of a 
problem in one of these areas. Any faulty areas should be 
corrected immediately. 

Hangers 

Various types of hangers are used to support exhaust 
system(s). These include conventional rubber straps, rubber 
rings, and rubber blocks. 
The installation of exhaust system supports is very important, 
as improperly installed supports can cause annoying vibrations 
which can be difficult to diagnose. 

Three Way Catalytic Converter (If applicable) 

The three way catalytic converter is an emission control device 
added to the exhaust system to reduce pollutants from the 
exhaust gas stream. 
 
CAUTION: The catalytic converter requires the use of 
unleaded fuel only. 
Periodic maintenance of the exhaust system is not required. If 
the vehicle is raised for other service, it is advisable to check 
the condition of the complete exhaust system. 
A dual bed monolith catalytic converter is used in combination 
with three way catalytic converter. 
Catalytic Types: 
Three way (Reduction/Oxidation) catalyst 
The catalyst coating on the three way (reduction) converter 
contains platinum and rhodium which lowers the levels of 
nitrous oxide (NOx) as well as hydrocarbons (HC) and carbon 
monoxide (Co). 

Gasket 

The gasket must be replaced whenever a new exhaust pipe, 
muffler or catalytic converter is installed. 

6F-4  ENGINE EXHAUST 

 

 

 
 

Service Precaution 

CAUTION:  
Always use the correct fastener in the proper location. 
When you replace a fastener, use ONLY the exact part 
number for that application. ISUZU will call out those 
fasteners that require a replacement after removal. ISUZU 
will also call out the fasteners that require thread lockers 
or thread sealant. UNLESS OTHERWISE SPECIFIED, do 
not use supplemental coatings (Paints, greases, or other 
corrosion inhibitors) on threaded fasteners or fastener 
joint interfaces. Generally, such coatings adversely affect 
the fastener torque and the joint clamping force, and may 
damage the fastener. When you install fasteners, use the 
correct tightening sequence and specifications. Following 
these instructions can help you avoid damage to parts 
and systems. 
 

ENGINE EXHAUST  6F-5 

Exhaust Pipe 

Exhaust Pipe and Associated parts 

 
 

 

 

 

RTW46FLF000401 

 

 

 
 
 
 
 
 
 
 
 
 

 

 

Removal 

(2.4L) 

CAUTION 

When you remove or install the front exhaust pipe, make 
sure not to damage the fuel evaporative pipe. 

1. Damper rubber 

2. Exhaust silencer 

3. Mid pipe 

4. Damper rubber 

5.  Front exhaust pipe fixing nut 

6.  Catalytic converter (If applicable) 

7.  Front exhaust pipe 

6F-6  ENGINE EXHAUST 

 

 

Installation 

To install, follow the removal steps in the reverse order. 
 

 

 

 
 
 
 
 

 

 

Important - Installation 

1.  Front Exhaust Pipe Flange Nut 
Connect the exhaust pipe to the exhaust manifold. 
Front exhaust pipe to manifold nut. 
Torque 
 

N

⋅m (kgf⋅m)

28 (2.9) 

Inspection 

Make the necessary adjustments, and part replacements if 
excessive wear or damage is discover during inspection. 
 
1.  Front Exhaust Pipe 

2.  Center Exhaust Pipe and Catalytic Converter Flange Nut 

3.  Exhaust Pipe Damper Rubber 

4.  Exhaust Silencer with Rear Exhaust Pipe 
 
Check the pipes for for corrosion, cracking , damage or 
misalignment and repair if required. 
Check the damper rubber for deterioration or damage and 
repair if required.