D4-9 / D4-9X Four-Post Lifts 69 P/N 5900251 — Rev. A1— August 2021
4. Disengage the Safety Locks, then lower the Vehicle back
down onto the Runways; the weight of the Vehicle will
lower it to the ground.
If you continue to have issues with your Lift, take it out of service, then contact your dealer, go to
dannmar.com/support, email support@dannmar.com, or call (877) 432-6627.
Bleeding the Hydraulic Cylinder
The Hydraulic Cylinder on the Lift is self-bleeding, which means that in most cases any air in the
Hydraulic System gets removed automatically simply by using the Lift.
In rare cases, it may be necessary to manually bleed the Hydraulic System of any extra air.
⚠ WARNING Before performing any maintenance on your Lift (for example, bleeding the
Hydraulic Cylinder or adding Hydraulic Fluid), make sure both Runways are on the
ground and the power source has been disconnected and cannot accidentally be
re-connected.
Symptoms of air in the Hydraulic System include Runways moving erratically and/or making odd
noises during raising or lowering. These could be caused by other situations; refer to
Troubleshooting for more information.
To bleed the Hydraulic System:
1. Raise the Lift to maximum rise and then lower it all the way back down again.
⚠ CAUTION Pause for at least a full minute between each cycle. The Lift’s motor cannot run
continuously; it is designed for regular use, but not continuous use.
2. Raise the Lift again to maximum rise; watch the Runways as you raise it.
If the Lift does
not
move erratically, squeak, or jerk as it moves, the Hydraulic System has been
purged of air. You can return the Lift to normal operation.
3. If the Lift
does
move erratically, squeak, or jerk as it moves, perform Step 2 again.
When the Lift is raising and lowering smoothly, you can return it to normal operation.
If your Lift is still moving erratically or making odd noises after bleeding the Hydraulic System, take
it out of service, go to bendpak.com/support, email support@bendpak.com, or call (800)
253-2363.
4. Check the Hydraulic Fluid reservoir on the Power Unit.
NOTICE Bleeding the Hydraulic System may lower the amount of Hydraulic Fluid in the reservoir.
5. Add additional Hydraulic Fluid if necessary.
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