Service Manual

WEICHAI EMISSION-RELATED INSTALLATION INSTRUCTIONS
Operation
- The continuous operating exhaust gas temperature must be between 1112 deg F (600°C) and 1562
deg F (850°C).
- The Product installer shall take necessary precautions to accommodate shell skin temperatures
- up to 1202 deg F (650°C).
- System backpressure must remain with +/- 5% of nominal conditions.
- Engine misfires and exhaust stream containments are not permissible.
Vibration
- Vibration isolation must be provided between the engine and the TWC.
- Vibration isolation must be provided between the Product and the chassis.
- Vibration acceleration loads shall not exceed 10g.
Installation
- Product shall not support mounting loads from adjacent components.
- Product must be mounted within +/- 10° of horizontal. Any other orientation must be approved
- by the manufacturer.
- Product must be supported at a minimum of two mounting locations.
- Installer shall ensure mounting hardware, such as fasteners, is sufficient for the application.
- Manufacturer recommends use of graphite gaskets for flanged joints.
- Heat shields must be reviewed by the manufacturer.
- Product cannot be used in corrosive environments (i.e. salt water).
Mounting the catalytic converter in the proper location will control the substrate temperature. To
quickly heat up the catalyst and to ensure an effective operating temperature, the center of the
substrate must be located a minimum of 30 inches (762mm) downstream of the exhaust manifold
flange. This measurement is made along the length of the exhaust pipe and must take all bends and
curves into consideration. The Max distance allowed downstream of the exhaust manifold flange is 36
inches (914mm). Figure 16 depicts an example catalytic converter setup.
Figure 16 CATALYTIC CONVERTER ORIENTATION
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