Installation &Maintenance
329
Proper Installations & Hose Routing
Proper Hose Installation
Warning:
Improper selection, installation or maintenance of a hose
assembly may result in premature failures, bodily injury or property
damage.
The following practices should be used when replacing a hydraulic hose
assembly or installing a new hydraulic assembly.
1.
A pre-installation inspection should include the
following:
a.
Check to ensure the hose is the correct specification in style, size
and length.
b.
Check that the hose assembly has no visible non-conformity.
c.
Check fittings for any damage including nicks or burrs.
d.
Check that the hose is routed properly using suggested
guidelines.
e.
Check that the hose is not damaged (kinked, crushed, twisted).
2.
Handle assembly with care. Avoid bending hose beyond the
recommended bend radius.
3.
Hose assemblies should not be installed in a torqued
or twisted condition.
4.
Use necessary restraints and protective devices when necessary to
reduce wear and stress points on the assembly.
Satisfactory performance and appearance depend upon proper hose
installation. Excessive length destroys the trim appearance of an installation
and adds unnecessarily to the cost of the equipment. Hose assemblies of
insufficient length to permit adequate flexing, expansion or contraction will
cause poor power transmission and shorten the life of the hose.
The diagrams below offer suggestions for proper hose installations to
obtain the maximum in performance and economy.
Since hose may change in length from +2% to -4% under the surge of high
pressure, provide sufficient slack for expansion and contraction.
Correct Assembly Installation & Routing
Obtain direct routing of the hose through use of 45˚ and 90˚ adapters and
fittings. Improve appearance by avoiding excessive hose length.
Avoid sharp twist or bend in hose by using proper angle adapters compatible
with the hose.
RIGHT
WRONG
Appendix
Installation & Maintenance
Assemblies
Equipment & Accessories
Fittings
Hoses