S 550 (221.171) V8-5.5L (273.961) (2007)
/v8-5.5l_(273.961)/Page-3973015.png)
The body sealing compound and underbody sealant must be removed from all the body mounting points of the trailer coupling. The mounting points
should then be cleaned with a commercially available cleaning agent. Apply anticorrosion paint to bare-metal areas of the body.
Trailer couplings are homologated safety parts. Their installation on the vehicle is to be carried out exclusively by trained, professional technicians.
Trailer couplings, which are damaged because of an accident, bottoming or being run into from behind, must be replaced; subsequent alterations such as
bending, mechanically processing, and welding are not permitted.
The diameter of the coupling ball, measured with a caliper gauge, must measure at least 49 mm at all points. The ball must be greased before use to
reduce wear. Advise the customer accordingly.
It not necessary to grease the ball on trailers with an anti-swerve device (refer to trailer instructions). Advise the customer accordingly.
Advise the customer to read the "Trailer coupling" and "Towing a trailer" sections in the vehicle owner's manual.
The customer should be recommended to install a battery with a larger capacity (at least 70Ah).
