Manitowoc Grove GMK 4100L-1, Руководство по обслуживанию

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Maintenance work on the carrier
7.19 Towbar coupling
7 - 136 3 302 364 en Maintenance manual
GMK 4100L-1
2
5
.1
1.
201
6
7.19.6
Checking the support ring
Prerequisites – The coupling must be closed;
à
p. 7 - 132.
Checking the
support ring
•
Check the support ring ( 1 ) at the bottom of
the coupling jaw.
When the trailer is coupled, the draw eyelet
of the trailer must not be in contact with the
lower bushing (
2 ).
Have the support ring changed if:
– The trailer's draw eyelet touches the lower
bushing because of wear or
– The support ring has reached its wear limit
of H = 14 mm (0.55 in)
7.19.7 Checking the function of the coupling jaw/
resetting the middle position
Spare parts
and tool – Torque wrench for a torque of 58 Nm (42.7 lbf ft).
Prerequisites – The coupling must be closed;
à
p. 7 - 132.
M 3
M 3