Maintenance work on the carrier
7.19 Towbar coupling
7 - 138 3 302 744 en Maintenance manual
GMK5250L
09.03.2018
7.19.3 Checking the cotter pin
Prerequisites – The coupling must be closed; à p. 7 - 136.
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 personnel.
• Also check the cotter pin for the correct ver-
tical play. Take a screwdriver and 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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