HD-973P Series Multi-Level Parking Lift 57 P/N 5900076 — Rev. B3 — January 2024
Connecting the Return Line
The Return Line connects to the Hydraulic Return connector on the Power Unit.
On each Platform, one end of the Return Line is already connected to the Hydraulic Cylinder; the other
end should be coming out of the Flex Tube.
To attach the Return Line to the Power Unit:
Take each Return Line (one per Platform) and securely connect them to a Tee Compression Fitting.
Pick the Hydraulic Return Port on the Power Unit you want to use and remove the Shipping Plug.
Attach a Compression Elbow Fitting (P/N 5550089) to the Hydraulic Return Port.
See Connecting the Power Source to identify the Port locations on your Power Unit.
Cut another piece of Tubing to attach to the other end of the Tee Fitting, then connect the other
end of the Tubing to the COMP end of the Compression Elbow Fitting already connected to the
Hydraulic Return Port.
For information about connection compression fittings, refer to Working with Compression
Fittings and Tubing.
Important: The Air Line, at one point, was also coming out of the Flex Tube and it uses the
same kind of tubing as the Return Line. The Air Line should have been connected in
the previous section, but if it was not, make sure you are attaching the Return Line
to the Power Unit and not the Air Line. Do not attach the Air Line to the
Power Unit by mistake.
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