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Calculation of the minimum D-value, which your tow coupling must have:
D-value
l
in kN
100
150
200
250
300
350
Compare the calculated D-value from the table with the information regarding the D-value on the na-
meplate of the tow coupling (if you are unable to find the nameplate for the tow coupling, request the
D-value and the permissible drawbar load from your authorised service centre, the car manufacturer
or from the manufacturer of the tow coupling).
Example:
D-value according to nameplate:
permissible drawbar load:
vertical height K:
horizontal length L:
1.
Comparison permissible drawbar load has been met because there is a minimum drawbar load
of 70 kg.
2.
Now, look at the D-value in the table at the interface 80 mm height/250 mm length, in this case
7.1. With it, the requirement is met; this D-value of the tow coupling is higher than the minimum
D-value calculated from the table.
3.
That results in the rear carrier being able to carry a payload of 59 kg (max. payload of the rear
carrier).
Preparation and assembly of the rear carrier on the tow coupling
Mount the quick coupling on the rear carrier basket using the enclosed mounting materials (4 bolts
M10x25, 4x washers,
4 lock nuts). (please refer to page 8, Fig. 1).
Then, mount the quick-release mechanism to the rear carrier basket using the enclosed mounting
screws. Please make sure that all screwed connections are tightened appropriately (observe tighte-
ning torque). Only use the enclosed lock nuts. All grease must be removed from the tow ball before
placing and mounting the rear carrier on the tow coupling.
Pull out the safety bolt (A) and rotate it 1/4 turn.
Now, the lever can be flipped upwards. Both ball clamping jaws in the quick-release mechanism
open.
Place the rear carrier onto the tow ball and press the lever halfway down, so that the carrier can still
be adjusted horizontally.
If the rear carrier is aligned horizontally behind the car, press the hand lever all the way down and
secure it using the safety bolt.
Important: the contact pressure of the ball clamping jaws must be readjusted or readapted to every
tow coupling, to achieve the required clamping stability.
To do so, first loosen the counter nut (C), to then tighten the adjustment screw (B) with 32 Nm using a
torque wrench. At the same time, the hand lever must be in the clamping position (pressed down).
Then, retighten the counter nut.
The contact pressure of the ball clamping jaws must be checked at regular intervals.
This adjustment must be repeated for every vehicle/coupling change. If you do not have a torque
wrench, have this adjustment work conducted in a workshop.
You can protect the rear carrier against theft by inserting a padlock into the holes (D) intended for this
purpose.
40
60
12,0
9,6
10,7
8,9
9,7
8,3
9,0
7,9
8,5
7,6
8,1
7,3
10.5 kN
70 kg
80 mm
250 mm
21
k
80
100
8,0
6,9
7,6
6,7
7,3
6,5
7,1
6,4
6,8
6,2
6,7
6,1
120
140
6,1
5,5
6,0
5,4
5,9
5,4
5,8
5,4
5,7
5,3
5,7
5,3
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