Retrofit trailer hitch
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 approved safety-related parts. They must be installed on vehicles by a specialist. Trailer couplings which have been damaged in an accident, by bottoming or by an impact from behind must be replaced; subsequent modifications such as bending, machining, welding, etc. are not permitted.
The coupling ball must have a ball diameter of at least 49 mm at all points measured with a caliper gageIf this is not the case the coupling ball must be replaced for a new one. The ball must be greased before use to reduce wear.
The micro-encapsulated locking bolts and self-locking nuts may only be used once. If parts of the trailer coupling are removed, new micro-encapsulated bolts and self-locking nuts must be used when reinstalling these parts.
On trailers with an anti-swerve device it is not necessary to grease the ball (refer to trailer instructions). Please inform the customer of this.
Advise the customer to read the “Trailer coupling” and “Towing a trailer” sections in the vehicle owner’s manual
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