16
00 0290 395 0 - RHB C 490-C 370 - 03/09
1 Introduction
General repair instructions
44966
14041
Taper fittings on hydraulic lines
Installation:
– Oil the O-ring on the sealing cone. Tighten the
union nut a third of a turn beyond the point where
resistance is felt.
Important:
Back up the threaded joint with
a spanner!
Any deviating tightening torques reduce the rated
pressure resistance and the service life of the screw
fitting. This results in leaks and the tube slipping out.
49921
Hydraulic hoses
Hydraulic fittings:
Observe the final assembly instructions:
– For ferrule fittings on hydraulic lines see above.
For progressive ring screw fittings on hydraulic
lines see above. For sealing cone screw fittings on
hydraulic lines see above.
Laying the hoses:
Observe the information provided with the five figures
below.
– Avoid twisting the hoses during installation.
A =
incorrect installation
B =
correct installation
– Hoses must be installed in such a way that neither
tensile loads will occur in any operating condition
nor compression loads on short hose lines.
C =
incorrect installation
D =
correct installation
– As a guideline, the total play of the hose should be
1 cm min. when moving the hose back and forth in
the middle between two holders/connectors
(e.g. clamps).
1
5728
2
5727
Warning!
Hoses laid in a straight line become shorter
due to the internal hydraulic pressure.
Fittings may be torn out.
– Always install hoses with a slight sag.
Even in static positions.
