Operation Manual

12. Maintenance and upkeep
111
12.2 Drawgear
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 coup-ling 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 and tear on the friction pads; a
greased coupling ball negates the stabilizing eect. Thinning solvents
or spirit are both suitable for cleaning.
1
Rules for greasing and oiling
• Movable parts such as pins and hinged parts on the hand brake
lever and deexion lever of the ramp should be oiled lightly.
• Lightly grease the stationary parts on the case of the overrunning
equipment
j
after every 5,000 kilometres of driving.
IMPORTANT: The friction elements of the WS 3000 safety hitch
may NEVER be oiled or greased.
• Check from time to time to ensure that the bearing surfaces of the
thrust rod are not jammed.
• Clean and oil all movable and stationary parts regularly.
Greasing and oiling
Regularly examine and grease the sliding parts and stationary
parts of the chassis. If the caravan is used seldom, yearly mainte-
nance is required.
Rubber spring axles require no maintenance.
The axle(s) of the caravan is (are) tted with compact
wheel bearings. The cylinder hub, compact bearings
and axle nuts form a closed unit. The compact bearings
are free of maintenance due to their special grease.
You can nd further guidelines in the operating
instructions from the axle supplier.
For safety reasons, the spare parts for heating de-
vices must conform with the manufacturer's instruc-
tions. They must be installed by the manufacturer or
an authorised representative.
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 200-240 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.
Bearing surfaces on the casing of the over-
run coupling
Ball coupling