Maintenance work on the carrier
7.10 Suspension
03.11.2017
Maintenance manual 3 302 574 en 7 - 73
GMK3060
7.10.3 Forced lever – checking correct functioning
On suspension struts with forced levers, the forced levers must be checked
for proper functioning when the suspension is switched on and off.
• Start the engine.
• Lower the truck crane to the lowest level with the level adjustment sys-
tem;
à Operating Instructions.
• Switch off the suspension; à Operating Instructions.
The suspension struts and the forced levers (1) are brought together.
• Raise the truck crane with the outriggers; à Operating Instructions.
• Switch on the suspension; à Operating Instructions.
• Check that all suspension struts are extended and the forced levers (1) are
slackened.
If the suspension struts are not extended or only partially extended, the
forced lever is faulty.
• Faulty forced levers should be replaced as soon as possible by Manitowoc
Crane Care
or an authorised GROVE dealer or your qualified repair crew.
G
Risk of crushing when enabling the suspension locking system!
When the suspension is switched on, the wheels drop down suddenly.
Ensure that nobody is in close proximity to the wheels when you switch on
the suspension.
S
Risk of damage to the tyres!
Remove sharp-edged or pointed objects from below the wheels before
switching on the suspension.
In this way you prevent the tyres from bursting or being damaged when the
wheels come down.
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