Manitowoc GROVE GMK6400 User Manual

Maintenance work on the carrier
7.18 Towbar coupling
16.11.2018
Maintenance manual 3 302 756 en 7 - 127
GMK6400
7.18.4 Checking the lower bushing
Prerequisites – The coupling is closed; à p. 7 - 124.
Checking the
bushing
• Check the internal diameter of the lower
bushing. The dimension D must not be
greater than the following values:
If the dimension is larger than that given
above, have the bushing replaced by
Manitowoc Crane Care or an authorised GROVE
dealer or your repair crew.
7.18.5 Checking the initial tension of the springs
The coupling head should require physical force to twist it when checking
the torque.
• Check the initial tension of the rubber springs by twisting the coupling
head clockwise and anticlockwise.
M 3
Model series 400: 31.5 mm (1.25 in)
Model series 700: 34.2 mm (1.35 in)
M 3

Manitowoc GROVE GMK6400 Specifications

General

Brand	Manitowoc
Model	GROVE GMK6400
Category	Construction Equipment
Language	English