Manitowoc Grove GMK 5250L Maintenance Manual page 282

Maintenance work on the superstructure
8.7 Main boom
Before checking
Checking
After checking
8 - 54
•
Have pressure testing performed;
•
Telescope the telescopic section I to 56%
and mechanically lock the telescopic section
I in the basic section;
•
Pull the telescoping cylinder back;
à
Operating manual .
•
Switch the engine off and secure against
unauthorised use of the truck crane.
•
Secure yourself to prevent yourself from
falling.
•
Remove the cover (1) – the pressure
accumulator is present on the telescoping
cylinder (2).
à
p. 8 - 53.
•
Secure yourself to prevent yourself from
falling.
•
Fasten the cover (1).
•
Start the engine.
•
Retract the telescopic section I to 0% and
mechanically lock the telescopic section I in
the basic section;
3 302 744 en
à
Operating manual .
à
Operating manual .
Maintenance manual
GMK5250L