Maintenance work on the carrier
7.17 Towbar coupling
7 - 122 3 302 574 en Maintenance manual
GMK3060
03.11.2017
7.17.3 Checking the cotter pin
Prerequisites – The coupling must be closed; à p. 7 - 120.
Checking the
cotter pin
• Check the wear on the cotter pin (1). The
diameter of the crowned section (arrows)
must not be less than the following values:
If the dimension is smaller than that given
above, have the cotter pin replaced by
Manitowoc Crane Care
or an authorised GROVE
dealer or your qualified repair crew.
• Also check the cotter pin for the correct ver-
tical play. Use a screwdriver to press the
pin (1) upwards. The vertical play (2) of the
pin must not exceed 4 mm (0.15 in)
Model series 400: 36.5 mm (1.44 in)
Model series 700: 46.0 mm (1.81 in)
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