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4. Maintenance
4.1 Coupling ball 50 mm Ø on towing vehicle
It should be dimensionnaly correct, undamaged, clean and free of grease.
On coupling balls with dacromet coating ( mat silver anti-corrosion coating ) as
well as on painted couplings, the coating must be completely removed using
emery cloth, grain size 200 – 240, prior to the first journey so that it does not
accumulate on the surfaces of the friction pads. The surface of the coupling ball
must be „ bright metal ". A damaged or dirty coupling ball causes increased
wear of the friction pads; a greasy coupling reduces the stabilising effect
significantly. Thinners or spirits, for example, are suitable for cleaning the ball.
4.2 Ball coupling
The interior of the ball coupling in the area of the friction pads is to be kept clean (
Fig. 8 ). If the friction pads are dirty, the surface can be cleaned using emery
cloth, grain size 200 – 240. Subsequently clean the surface with benzine or spirit.
All movable bearings and bolts must be slightly oiled. Regular maintenance and
care will serve to improve the service life, function and safe use of your WS 3000
ball coupling.
4.3 Replacing the friction pads
The friction pads can be replaced in the event of wear.
We supply a replacement set of 2 pads for the purpose of replacing the front and
rear pads. Part No.: 2 x 6209
Please observe the detailed assembly instructions contained in the replacement
set
4.4 Driving noises
Noises caused by friction between the pads and the ball can occur when driving
but which have no effect on the function of the coupling itself.
Noise can also be caused by:
- Dirt between friction pad and ball
Remedy:
Service the ball coupling / drawbar coupling as decribed in chapters
4.1/4.2
or replace the friction pads, refer to chapter 4.3
- Dry running of drawbar/draw tube in the bushings of the overrun device
Remedy:
Grease the bushings using the grease nipples. Remove bellow and grease
the drawbar
- Detachable ball coupling on towing vehicle
Remedy:
Regrease detachable ball coupling on the locking mechanism
( refer to operating instructions for trailer device ).
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