(Un)coupling the trailer
33
Operation
3
Ball couplings
Fig. 5
Example: Ball couplings
1
Handle
2
Safety catch
3
Wear indicator
4
Safety display
5
Softdock (rubber protection from impact)
There are different ball head couplings from different
manufacturers. In principle, they are constructed in the
same way and fulfil the same functions for trailer operation.
The ball head coupling on a car trailer coupling as
well as the ball head coupling on the trailer are
subject to wear and tear during operation. This
depends on the driving style as well as adhering to
regular maintenance of the ball head and the trailer
coupling. The various signs of wear (Fig. 5 /3) on
the ball head coupling or additional safety displays
(Fig. 5 /4) are there for your safety. These display
the status and wear of the ball head and the
coupling cup / spherical cup.
Wear check
Fig. 6
Example: Ball coupling from below
1
Coupling cup
2
Spherical cup
3
Safety display
Regularly inspect the state of the coupling cup (Fig. 6 /1)
and the spherical cup (Fig. 6 /2).
Before every trip, check the state of the ball head on your
car trailer coupling.
The ball head should not show any visible grooves and
should not fall below a minimum diameter -
see “Ball coupling” on page 161.
WARNING
Driving with a worn ball head coupling!
The trailer could come uncoupled while driving, could
start skidding and tip over - risk of an accident!
Do not drive with a worn / dirty ball head coupling.
Before setting off, make sure that the ball head coupling
has clicked into place and the safety display is in the
green / positive area.
A ball head with a diameter of less than 49 mm needs to
be replaced.
Signs of wear
Fig. 7
Example: Optical display on the ball head coupling
1
Wear / safety indicator
After uncoupling the ball head coupling, check the optical
wear / safety display (Fig. 7 /1).
The optical display needs to be in the green /
positive OK area
(+)
.
– Ball head is in new condition.
– Wear of the ball head is in the permitted range.
Correct the coupling if the red STOP marker or
(X)
is
displayed.
– The ball head coupling of the trailer has not been
properly coupled.
Carry out maintenance work if the warning sign
(-)
is
displayed.
– Ball head on the car trailer coupling is at the bottom
wear limit (Ø 49 mm).
– The ball head coupling of the trailer is damaged.
B - 027
1
2
3
4
5
B - 028
2
3
1
1
B - 031
1
Summary of Contents for 1000 Series
Page 1: ...GENERAL CAR Program PART 1 OPERATING MANUAL humbaur com 1000 8400 SERIES EN ...
Page 9: ...1 7 Safety ...
Page 21: ...2 19 General information ...
Page 31: ...3 29 Operation ...
Page 67: ...3 65 Operation Trailer safety ...
Page 75: ...4 73 Chassis ...
Page 103: ...5 101 Body ...
Page 134: ...Cover net 5 132 Body ...
Page 135: ...6 133 Electrical system ...
Page 145: ...7 143 Testing care and maintenance ...
Page 185: ...8 183 Troubleshooting guide ...
Page 194: ...Hydraulics 8 192 Troubleshooting guide ...
Page 195: ...9 193 Proof of inspection ...