Installation Guide

D4-9 / D4-9X Four-Post Lifts 60 P/N 5900251 — Rev. A— October 2020
Troubleshooting
Note: If your Lift is not functioning correctly, you must take it out of service until it is fixed.
Important: All repair work must be done by qualified personnel.
⚠ WARNING The Lift uses electrical energy; if your organization has Lockout/Tagout policies,
make sure to implement them
before performing any Troubleshooting.
Runways do not raise or do not
lower, once raised.
Make sure there is sufficient Hydraulic Fluid in the reservoir.
Make sure there is no air in the Hydraulic System.
Make sure none of the Hydraulic Hoses are pinched or
leaking.
If the Hydraulic Fluid is dirty, replace it with clean fluid.
Make sure the Power Unit is getting power.
Make sure Lift is not overloaded.
One corner of the Lift is lower than
the other three corners.
The Safety Lock on the low corner is not engaged. Raise the
Runways, then lower them down onto Safety Locks. Make
sure all four Safety Locks are engaged at the same height.
Runways move erratically or squeak
when in use.
Move the Runways up and down a few times to flush any
residual air from the Hydraulic System. Make sure to pause for
at least a full minute between cycles.
Runways do not stay up. Check for leaking Hydraulic Fluid.
Make sure the Runways were left engaged on Safety Locks.
Motor not running. Check the connection to the power source; make sure it is
plugged in and of the appropriate voltage.
Check the wiring diagram.
Hydraulic Fluid is dirty. Replace the dirty fluid with clean, approved Hydraulic Fluids,
such as Dexron III, Dexron VI, Mercon V, Mercon LV, Shell
Tellus S4 / S3 / S2, or comparable.
Runways make odd noises. Lubricate the Sheaves using white lithium grease. If the Lift is
new, a break-in period may be needed; run the Lift several
times each day. If the noises persist, contact Dannmar
Support.
Lift becomes inoperative with
Vehicle on it in a raised position.
If Safety Locks are engaged, Vehicle will stay raised. To lower
it, use jacks and jack stands to raise the Vehicle up off the
Runways a few inches, 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 [e-mail], or call [phone].