ways carry the ball coupling in the vehicle.
→ pa
ge 322
Removing and slackening the ball
c
oupling
Fig. 160 Overview: removable b
all coupling.
1
Protective cap.
2
Ball head.
3
Retaining balls.
4
Catch (ball) for locking element.
5
Centring device.
6
Shank.
7
Lock cover.
8
Key.
9
Handwheel.
10
Gap (pre-tensioned ball coupling).
11
White marking on ball coupling.
12
Green marking on handwheel.
13
Red marking on handwheel.
Removing the ball coupling
1.
Stop the vehicle and secure against
rolling away → page 195.
2. Switch o the engine → page 148.
3. Unhitch the trailer and disconnect the
electrical connection between the vehi-
cle and the trailer. If fitted, remove the
adapter from the trailer socket.
4.
R
emove the lock cap → Fig. 160
7 from
the lock on the handwheel.
5.
Insert the key → Fig. 16
0
8 into the lock
and turn it anti-clockwise.
6
.
Hold the ball coupling → Fig. 160
2
tightly in one hand → .
7
. Use your other hand to pull out the
handwheel → Fig. 160
9 in the direc-
tion of arrow A and hold it in this posi-
tion.
8
.
Turn the handwheel → Fig. 160
9 as far
a
s it will go in the direction of the arrow
B .
9
.
Hold the handwheel → Fig. 160
9 in
this position and guide the b
all coupling
2 downwards out of the mount. The
b
all coupling engages and is pre-ten-
sioned.
10. Insert the sealing plug into the mount
for the ball coupling.
Slackening the ball coupling
The ball coupling must be slackened be-
fore being returned to the storage box.
1. Hold the ball coupling in one hand.
2. Use your other hand to turn the hand-
wheel → Fig. 160
9 as far as it will go in
the direc
tion of the arrow
B .
3.
P
ress in the ball → Fig. 160
4 .
4
.
Turn the handwheel back → Fig. 160
9
anti-clockwise.
5.
R
elease the ball → Fig. 160
4 . The
handwheel no longer protrudes from
the b
all coupling. The ball coupling is
now slackened.
6.
Turn the key → Fig. 160
8 clockwise
and remove. S
tore the key in the stow-
age box.
7.
Close the lock cap → Fig. 160
7 .
8
. Place the slackened ball coupling in the
stowage box. Secure the stowage box
under the right-hand front seat.
Towing bracket
281
2KF012720AE
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