Kenworth t800, Руководство пользователя

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2-4
Section 2
Safety & Compliance
08/12
To ensure compliance to emissions regulations, the final configuration of certain features of the completed vehicle
must meet specific requirements. This section describes requirements relevant for only the most common or critical modifi -
cations done by body builders. For a complete description of acceptable modifications, see the application
guidance available from the manufacturer of the engine installed in the chassis.
Fuel System
The following are highlights of some of the more common or critical aspects of this system.
The overall system restriction may not exceed the restriction limitations set forth by the engine manufacturer for both
supply and return.
• Ensure that fuel lines are not pinched or can potentially be damaged when installed between body and frame
• Fuel lines must be routed and secured without dips or sags
• There must be easy access to filter(s) and fill cap
• The tank vent may not obstructed
• Added accessories (heaters, generators) cannot introduce air into system
• Fuel tank must be located so that the full level is not above cylinder head
• “Ultra Low Sulfur Fuel Only” labels must be present on the dash and fuel fill
• Modification of the pressure side secondary filter and plumbing is not allowed without engine manufacturer
approval
• Body installation of fuel tank or routing of lines must not cause significant increase in fuel temperature
• Fuel hoses shall meet or exceed OEM supplied hose material construction specifications
Compressed Air System
The following are highlights of some of the more common or critical aspects of this system.
• Air system modification must meet applicable FMVSS regulations
• Compressed Air tank may not be modified (exception – addition or removal of fittings or relocation of the tank)
• Added devices or bodywork may not interfere with or rub air lines
• Air supply to the engine doser may not be restricted or disconnected
• Air lines should be routed, protected from heat, and properly secured to prevent damage from other
components
• Care should be taken so that air lines do not rub against other components
• Care should be taken to protect the air system from heat sources.
Exhaust and Exhaust After-treatment System
The following are highlights of some of the more common or critical aspects of this system.
• The following after-treatment and exhaust system components may not be modified:
• DPF assembly
• SCR Catalyst assembly
• Exhaust pipes between the engine and after-treatment devices (DPF, SCR Catalyst) and between
after-treatment devices