Hobby Caravan Series, Handbook

Page: 21 / 118

03-5
Fig.
Fig. 5
Maintenance
Coupling ball on base vehicle
Ensure that the coupling ball meets the required
dimensions and is undamaged, clean and free of
grease. When using dacromet-coated (dull silver
anti-corrosion coating) as well as lacquered
coupling balls, the coating must be removed
completely with sandpaper (200-240 grain) so
that it does not create deposits on the friction
lining. The metal surface of the coupling ball
must be bright. A damaged or dirty coupling ball
causes increased wear of the friction linings; a
greasy one greatly diminishes the stabilization
effect. Thinning solvents or spirit are both
suitable for cleaning.
Tension ball coupler
Keep the friction linings inside the tension ball
coupler clean and free of grease (Fig. 5). When
the friction linings are dirty, the surface can be
cleaned with 200-20 grain sandpaper. Then
clean with petroleum ether or spirit. All movable
bearings and bolts are easy to grease. By regular
upkeep and maintenance of your WS 3000, you
increase its overall life span, function and safety.
Changing the friction lining
The front friction lining () can be changed in
case of excessive wear. Note the detailed as-
sembly instructions in the manufacturer's set
of spare parts. The rear friction lining has such
a large dimension that it does not have to be
replaced.