HD-7P / HD-7W Four-Post Lifts
46
P/N 5900041 — Rev. M — July 2019
Installing the Return Line
The Return Line takes excess Hydraulic Fluid coming out of the Hydraulic Cylinder and sends it back
into the Fluid Reservoir on the Power Unit.
The Return Line is a single piece of ¼ inch, black, polyethylene Tubing with Elbow Compression
Fittings on each end. You need to cut off a piece of the supplied Tubing to create the Return Line.
Important
: The Return Line uses the same ¼ inch, black, polyethylene Tubing as the Air Lines. Be
sure not to confuse the two: the Return Line and the Air Lines do completely different
things and
must
be kept separate from each other.
The following drawing shows how to connect the Return Line.
Drawing not to scale. Some components not shown. Some components exaggerated for clarity.
To install the Return Line
:
1.
Measure the distance from the Return Line connector on the Hydraulic Cylinder to the Return Line
connector on the Power Unit.
2.
Cut a piece of Tubing to the measured length from the roll of Tubing that comes with the Lift.
It is better to cut the Tubing a little too long rather than a little too short.
3.
Route the Tubing from the Hydraulic Cylinder, through the Retaining Rings on the underside of the
Powerside Runway, through the Flex Tube, and out next to where the Power Unit will be installed.
Route the Return Line through the Retaining Rings so that it is away from the Lifting Cables.
4.
Remove the Shipping Plug from the Return Line Connector on the Hydraulic Cylinder.
5.
Connect and tighten an Elbow Compression Fitting into the opening where the Shipping Plug was.
6.
Connect one end of the Return Line to the Elbow Compression Fitting you just installed.
Refer to
Working with Compression Fittings and Tubing
7.
Leave the Power Unit end of the Return Line hanging out of the Flex Tube for now.
It will be connected to an Elbow Compression Fitting and to the Power Unit later in the installation.
Содержание HD-7P
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