Installation
Installing the hydraulic power unit
2007-9015-001
03-2014
Hydraulic line installation guidelines
Refer to section on hydraulic diagram.
Proper hydraulic hose installation is essential for satisfactory system
performance and ensuring the maximum service life from the hose.
Hose assemblies will flex and change in length due to fluid pressure changes
and temperature. If hose assemblies are too short to permit adequate flexing
and allow for small changes in length, hose service life will be reduced.
● Leave a slight amount of slack in the
hose to allow it to move and
dissipate energy when under
pressure.
● If the hose is too tight, a tension will
be apply to the fitting and connection
point.
Where a hose must be bent into a curve, the curve must be smooth with no twists
in the hose. It must meet the supplier specifications.
● Each hose size has a minimum allowable bend radius. Bending the hose
into a tighter curve can cause flow restrictions, increased pressure, and
stress the hose structure at the bend leading to premature hose failure.
Hose size ID
Minimum radius
¼”
5” [127 mm]
½”
7” [180 mm]
¾”
9.5” [240 mm]
● If a tighter radius is required, use an elbow fitting rather than a straight fitting.
● Use a swivel fitting on at least one end of each hose to prevent twisting the
hose while tightening the fitting.
Avoid placing hoses over sharp edges which could cause abrasions to the hose.
