Maintenance work on the carrier
7.19 Towbar coupling
09.03.2018
Maintenance manual 3 302 744 en 7 - 137
GMK5250L
7.19.2 Checking the bearing
Prerequisites – The coupling must be closed; à p. 7 - 136.
Checking the
bearing
• Check the bearing of the towbar coupling by
vigorously shaking it up and down and in
the longitudinal direction (arrows). Hold the
towbar coupling at the top and bottom of
the coupling head and not by the coupling
jaw.
The vertical play at the coupling head must be
no more than 3 mm (0.1 in).
G
Risk of injury.
Ensure that the towbar coupling is closed for the following work (lever
points downwards). The lever may otherwise come down with great force
and cause serious injury to your hand.
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