UD Trucks Body Builder’s Manual

This Book has been prepared to provide intermediate and final stage manufacturers with basic data, such as mass and dimensions, of the chassis-cab manufactured byNissan Diesel Motor Co.,Ltd.  This Book is not intended to provide instructionsor authorization by Nissan Diesel Motor Co., Ltd. for modification, alteration or completion of any vehicle and nothing contained herein is to be regarded as providing any such instructions or authorization.  Nissan Diesel Motor Co., Ltd. and Nissan Diesel America, inc. shall not be responsible for any modification, alter-ation or completion of the vehicle which shall be the responsibility of sub-sequent stage manufacturers.

UD Truck BODY BUILDER’S BOOK for:

• UD1800HD/MKA370
• UD2000/MKB370
• UD2300/LKC370
• UD2600/PKA370
• UD3300/PKC370

The chassis-cab manufactured by Nissan Diesel Motor Co., Ltd. is designed to comply with applicable Federal Emission Control Regula-tions, Federal Noise Emission Control Regulations, and Federal Motor Vehicle Safety Standards applicable atthe time of manufacture.  State-ments relating to the compliance ofthe chassis-cab manufactured by Nis-san Diesel Motor Co., Ltd. in compliance with the Federal Motor Vehicle Safety Standards (FMVSS) are set forth solely in the Document for Incomplete Vehicle accompanying each chassis-cab and nothing con-tained herein is to be regarded as astatement relating to compliance with the FMVSS.

Regulations such as those issuedby the Federal Highway Administra-tion or issued pursuant to the Occupational Safety and Health Act(OSHA) and/or state and local laws and regulations may require installa-tion of additional equipment for the particular use intended for the vehicle.Nothing contained herein is to be construed as a representation that such equipment required for the particular use intended has been installed on the incomplete chassis-cab.

NOISE EMISSION CONTROL SYSTEMS AND MODIFICATIONS
All new Nissan Diesel Motor Co., Ltd. vehicles sold in the U.S. are manufactured in compliance with the U.S. Environmental Protection Agency Federal Noise Emission Standards for Medium and Heavy trucks in excess of 10,000 pounds GVMR (40 CFR 205.). The Noise Emission Warranty is provided in the Warranty and Service Booklet.  The Nissan Diesel Motor Co., Ltd. Owner’s Manual includes maintenance information for systems which may affect exterior noise emissions.  Both documents must be incorporated in and furnished with each vehicle at the time of sale.

ADDITIONOFOTHERLIGHTSANDELECTRICALCOM-PONENTS
When the total wattage of the lights on Table III of paragraph 4 exceeds 108W, or when adding a light other  than one described in para-graph 4 and other electrical components, install the wiring circuit accord-ing to paragraph 3 and the instructions below:

1. Power supply (12-bolt)
   • The fuse box located inside the cab has a spare 15A power source.When adding a circuit, use SAE Type 1A 1/4 terminal (see SAEJ858a) for the connection terminaland an automotive low-tension wire
   • AWG16, (1.25 mm2).  Properly insulate the connections.
   • The load current should be less than 10A (120 watts).
   • when connecting a load of more than 10A (120 watts), take power from the vehicle’s junction block ora point as close to the battery as possible.  Be sure to install a fusible link, fuse or circuit breaker for cir-cuit protection.
2. Switch for added device
   • When controlling an added light with an existing switch, install a relay for the light.  Be careful to pass only the actuating current for the relay passed through the switch.
   • Other added loads must not be controlled by existing switches.  Be sure to install an exclusive switch for each added device.  When add-ing switches inside the cab, extra care must be used to prevent inter-ference to existing wiring.

ENGINE CONTROL
The engine governor is available only in electronic types but not in mechanical types.

ENGINE WITH AN ELECTRONIC GOVERNOR

• The engine with an electronic governor is not equipped with a controllever for the injection pump.
• An engine control lever is available as an option, and the enginecontrol unit can be controlled externally by connecting the enginecontrol lever to the connector (chassis harness on the inner left sideof the cab mounting bracket).
• The engine control lever shouldbe attached on the chassis side,using an extension harness.
• The characteristics of the governor can be switched by connectingor disconnecting the two harness connectors (junction A andjunction B) in the lower inner section of the instrument panel in frontof the front passenger seat.
• Positions of the junctions

WIRING DIAGRAM INFORMATION
HOW TO READ WIRING DIAGRAM
The electric wiring diagram and other electric informations contained in this guide use abbreviations, symbols, and numbers. This chapter ex-plains their meanings and how to read the wiring diagrams.
NOTE: Other detail electric informationsof chassis-cab, please refer tothe ”NISSAN DIESEL MOTER CO.,LTD. SERVICE MANUAL“.
Parts Abbreviation
The parts abbreviation indicates the name, location and condition of each part, such as a switch, meter or light.

SIMPLIFIED LAYOUT OF HARNESS
SCHEMATIC DIAGRAM
The schematic diagram illustrates how each harness (main harness, chassis harness, floor upper harness, bodyside harness, etc.) is wired on the  actual vehicle.  Depending on the vehicle model,however, the arrangements of the wires and units may sometimes be different, so the respective schematic dia-grams must be carefully checked tosee if they coincide with the arrangements in the actual vehicle.