The tow ball should be clean, free of rust and undamaged and not excessively worn.
If the caravan is fitted with an AL-KO AKS 3004 hitch head then the tow ball must be completely free of grease to avoid contaminating the friction pads.
This type of hitch head is designed to be used with a swan neck, fixed or detachable tow ball.
If you use a ‘bolt on type’ tow ball you may need to replace your tow ball with a special extended neck tow ball.
If you have a bolt on type tow ball you should ask your dealer to check clearance around the tow ball to allow for the stabiliser to articulate.
The AL-KO extended neck tow ball (available from your dealer) is approved to UN ECE R55.
CAUTON: Failure to provide enough clearance around the tow ball may invalidate your stabiliser warranty.
Hitch Head Capacity
The maximum vertical static load which can be put upon the hitch head when connectedis 100 kg. Please refer to the technical data in your handbook. (But see also tow vehicle manufacturer’s weight limits on tow ball loading.)