Liebherr R 926 - Manual (Page 12)

12 Liebherr Quick Coupling Systems
Reconditioning
Thanks to replaceable wearing parts Liebherr quick change systems can be reconditioned at little cost within
the shortest of times to restore them to their “as new” state. Hydraulic couplings on the working tool and
hydraulic excavator can be easily replaced on the building site by the machine operator.
Quick and easy: changing sealing washers on the working tool
The condition of the sealing washers can be checked by pressing down the sealing discs. If replacement is
necessary, the sealing washer can be quickly replaced with the help of a screwdriver and a sharp tool.
• Hydraulic excavator: couplings with maintenance-free metallic washers
• hydraulic working tools: couplings with sealing washers
Easy maintenance,
long service life
Press together new sealing washer
and place on the sealing disc with
the open end facing downwards.
Allow the sealing washer to jump into the groove. Remove screwdriver. Press sealing disc down as far as the groove,
position the screwdriver in the centre of the
sealing washer and remove hand.
Press down sealing disc on the coupling plug with a
screwdriver and remove the top sealing washer (red)
with a sharp tool. Working tool hydraulic couplings with sealing
washers