12-3
1
Changing the friction lining
The front friction lining
j
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.
Noises
Certain noises can occur during the course
of the drive; these noises, however, have no
inuence on the operative effectiveness of the
tension ball coupler.
Possible causes of these noises can be:
1. a dacromet-coated coupling ball on the
base vehicle,
2. a galvanized coupling ball on the base
vehicle,
3. a damaged or dirty coupling ball on the base
vehicle,
4. dirty friction elements on the tension ball
coupler.
5. the towbar or tie rod in the linings of the over-
running equipment are running dry.
Hints
for 1 and 2:
Remove the surface coating of the coupling ball
with sandpaper (200-240 grain) and clean with a
thinning solvent or spirit.
for 3:
Polish or clean dirty or damaged coupling balls.
for 4:
Clean the surface of the friction elements with
sandpaper (200-240 grain) and then clean with
petroleum ether or spirit.
for 5:
Use a lubricating nipple to grease the linings.
Pull back the shock absorber and grease the
bare towbar.
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