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TOWBAR AND OVERRUN BRAKE CHECK
Coupling head
Check coupling head for wear and correct operation.
Check the wear indicator (use within the "+" range
only).
Check the coupling head fastenings (see arrows,
Figure) at regular intervals for firm seating.
Height adjustment facility
After every adjustment the clamping nuts (1) must be
screwed up tight and secured with the spring pin (2).
Tightening torque:
M 24 = 250 - 350 Nm
M 32 = 350 - 400 Nm
Check tight fit of the clamping nuts and correct
positioning of the adjustment facility.
Brake play
The check is carried out visually on the stroke (x) of
the overrun coupling.
As soon as this is more than 50 mm when the brakes
are applied, adjust the wheel brakes.
Check towbar, handbrake lever, spring actuator,
reversing lever, linkage and all movable parts for ease
of movement.
Initially, then every 5,000 kilometres or
annually.
Initially, before every journey, after 500
kilometres, then every 5,000 kilometres
or annually.
After the first run, then every 2,000 -
3,000 kilometres.
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