Forced Lever - Checking Correct Functioning - Manitowoc GROVE GMK4090 Maintenance Manual

Maintenance work on the carrier
7.12 Suspension
7.12.3
G
S
7 - 80
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.
Risk of crushing when releasing 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.
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.
•
Start the engine.
•
Lower the truck crane to the lowest level with the level adjustment sys-
à
tem; Operating manual .
•
Switch off the suspension;
The suspension struts and the forced levers (1) are brought together.
•
Raise the truck crane with the outriggers;
•
Switch on the suspension;
•
Check whether 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
repair crew.
à
Operating manual .
à
Operating manual .
or an authorised GROVE dealer or your qualified
3 302 649 en
à
Operating manual .
Maintenance manual
M 3
GMK4090