D4-9 / D4-9X Four-Post Lifts 61 P/N 5900251 — Rev. A1— August 2021
Final Checklist Before Operation
Make sure these things have been done
before
putting the Lift into normal operation:
• Review the Installation Checklist to make sure all steps have been performed.
• Make sure the Power Unit is getting power from the power source.
• Check the reservoir on the Power Unit; it must be full of approved Hydraulic Fluid or automatic
transmission fluid.
You can damage the motor by running it without enough fluid.
• Check the Hydraulic System for leaks. Verify all Hydraulic Hose connections, Hydraulic Fittings,
and Auxiliary Port Plugs on the Lift and Power Unit are tight.
• Make sure all four Posts are properly anchored, shimmed, level, and stable, if you anchored them.
• Make sure all Lifting Cables are taut, seated in their Sheaves, and lubricated.
• Make sure that all Lifting Cables are straight between the Top Cap and the Slack Safety Sheave. If
any two are more angled than straight, then the Top Caps may have been installed incorrectly. If
so, they must be fixed. Refer to Installing the Top Caps for additional information.
• Make sure all Safety Locks are operating normally.
• Make sure the backup Slack Safety Locks are
not
engaged.
• If it has not been done already, perform an Operational Test of the Lift with a typical Vehicle. Refer
to Performing an Operational Test.
• Leave the Installation and Operation Manual with the Lift.
Performing an Operational Test
We strongly recommend doing an Operational Test of your Lift with a typical Vehicle before starting
normal service.
During the Operational Test, watch the Lift and its components and check for proper installation and
operation. If you run into an issue that does not go away, refer to Troubleshooting for more
information.
Note: Residual air in the Hydraulic System can cause the Lift to shake, move erratically, or
squeak when you start using it; this is normal. If it does not go away after raising and
lowering the Lift two or three times, try bleeding air from the Hydraulic Cylinder. If it still
does not go away, refer to Troubleshooting for additional information.
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