8-156 Periodic Maintenance and Adjustment
Basic information
Hitch coupling device is the device linking tractor and trailer.
Coupling ball are parts that are subject to type approval and that connect vehicles, and
are therefore subject to the highest safety requirements.
Adapt your driving to the road conditions when towing a trailer. Towing a trailer affects
the handling of a vehicle. Always follow the vehicle manufacturer’s operating
instructions.
Specifications of the vehicle manufacturer regarding trailer and torque load set the
standards for vehicle operation.
Values specified for the tow bar must not be exceeded.
T : Total weight of the vehicle in t
R : Total weight of the trailer in t
g : acceleration due to gravity, 9.81 m/s
2
Always observe the standard fixing points specified by the vehicle manufacturer.
Always observe national guidelines concerning official approval of extensions.
These installation and operating instructions have to be kept with the vehicle
documents.
Installation instructions
The Coupling ball is a safety component and should only be installed by qualified
personnel.
The Coupling ball can be easily installed and removed with the normal force of your
hands.
Any alteration and/or conversion of the Coupling ball is prohibited and will result in
the cancellation of the type approval.
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