HD-973P Series Multi-Level Parking Lift 24 P/N 5900076 — Rev. B3 — January 2024
Both Windows must be on the ends of the Powerside Runway and facing the inside of the Lift.
Perform Step 2 for the other two Crosstubes.
About Safety Locks
Safety Locks hold the Runways in place. Once engaged,
Safety Locks hold the Runways in place, even if the
power goes out or th
e Hydraulic Lines break or leak.
: Simply raising the Runways does not
necessarily engage them on the Safety
Locks. You must back the Runways
down onto the Safety Locks to engage
them.
WARNING Safety Locks are dependent on correct
installation of the ‘Ladders.’ Pay careful
attention when installing the Ladders,
thus ensuring correct operation of the
Safety Locks on your Lift.
adders, two per Post, are steel pieces with holes
four inches. As you raise the Runways, the
Safety Locks move into the holes in the Ladder. When
you move the Runways back down a little after passing a
Safety Lock, the Safety Lock engages. Once they are
engaged, Safety Locks stay engaged until you are ready
t
o lower the Runways.
WARNING Always leave the Runways either fully
lowered or engaged on their Safety
Locks. When you engage the Safety
Locks at a desired height, check to
make sure that all four Safety Locks for
that Platform are engaged.
So how do the Runways come down if the Safety Locks are engaged? To lower the Runways, you
raise them a few inches (to get them off the Safety Locks), then
press and hold down
the pushbutton
on the Pushbutton Air Valve. While you hold down the pushbutton, the Safety Locks are moved away
from the Ladders; they cannot engage, which allows the Runways to be lowered.
Out of an abundance of caution, your Lift has a second, independent Safety Lock system called the
Slack Safety. In total, your Lift has two Safety systems:
• Safety Locks: The primary system to hold up the Runways on your Lift are the Safety Locks.
When you move the Runways up, you can hear clicks as the Safety Locks go into the holes in the
Ladders. When you want to keep the Runways at a certain height, you go slightly past the height
you want, then back the Safety Locks down into the holes in the Ladders, which engages them.
• Slack Safety: The Slack Safeties are next to the Safety Locks on the ends of the Crosstube
Gussets. They are different from the Safety Locks in that when the Cables are taut (which they are
during normal operation), they hold the Slack Safeties away from the Ladder so that the Slack
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