HD-973P Series Multi-Level Parking Lift 52 P/N 5900076 — Rev. B3 — January 2024
The Power Unit must be installed on the Power Post; attach it to one of the two Mounting Brackets,
whichever is more convenient for the installation.
Important: Many people install the Flex Tube Bracket Plate and/or the Zero Angle Bracket at the
same time as they install the Power Unit. Refer to Installing the Flex Tube and
Installing the Pushbutton Air Valve for more information to see if this makes
sense for your installation.
⚠ DANGER Risk of explosion: The Power Unit has internal arcing or parts that may spark and
should not be exposed to flammable vapors. Never expose the Power Unit motor
to rain or other damp environments. Damage to the motor caused by water is not
covered by the warranty.
The Hydraulic Fluid reservoir on the Power Unit must be filled with Hydraulic Fluid or automatic
transmission fluid before you begin normal operation of the Lift. When you receive the Lift, the
fluid reservoir is empty. The Power Unit will not work correctly until it is filled with approved
Hydraulic Fluid.
Approved fluids are any general-purpose ISO-32, ISO-46, or ISO-68 hydraulic fluid, approved
automatic transmission fluids such as Dexron III, Dexron VI, Mercon V, Mercon LV, or any synthetic
multi-vehicle automatic transmission fluid.
⚠ WARNING Do not run your Power Unit without Hydraulic Fluid; you will damage it.
Even though you are not connecting the Power Unit at this point, you can fill the Hydraulic Fluid
reservoir with fluid.
To install the Power Unit:
Find the four supplied Hex Head Bolts, Flat Washers, and Nyloc Nuts.
Line up the holes on the Power Unit Back Plate with the four holes in the Mounting Bracket you
want to use.
If you are going to install the Flex Tube Bracket Plate and/or the Zero Angle Bracket at the same
time as the Power Unit, now is the time to put those into place.
Tip The Power Unit is heavy. BendPak recommends having one person hold the Power Unit
while another person bolts it into place.
Connect the Power Unit to the desired Mounting Brackets on the Power Post.
Fill the Hydraulic Reservoir on the Power Unit with approved fluid.
The Hydraulic Reservoir holds approximately 7 gallons (26.5 liters). Use care to keep the fluid clean
when filling the reservoir.
Approved fluids are any general-purpose ISO-32, ISO-46, or ISO-68 hydraulic fluid or approved
automatic transmission fluids such as Dexron III, Dexron VI, Mercon V, Mercon LV, or any synthetic
multi-vehicle automatic transmission fluid.
Do not connect the Power Unit to a power source at this point.
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