How to bleed the hydraulic system of a car hoist – Autohoist Australia Skip to content

How to bleed the hydraulic system of a car hoist

How to bleed a 2 post clear floor car hoist- ACE-4000CF

DO THIS IMMEDIATELY AFTER INSTALL AND BEFORE LOADING A VEHICLE ONTO THE HOIST

1. Raise the lift approximately 20-30CM from the floor but do not go past the first lock. Leave the cap off the oil reservoir. DO NOT RAISE THE HOIST TO MAXIMUM HEIGHT

2. Locate on top of one of the cylinders the bleeder screw.

3. Loosen but do not remove the bleeder screw. Loosen it just enough to allow as much air as possible to escape. Once the air has escaped, re-tighten bleeder screw but do not over tighten. Repeat this same process for the other cylinder.

4. Now, using the lock button, lower the lift to the floor. Because in most cases it is impossible to remove all of the air in it will be necessary for you to repeat, until all of the air has been removed. You will know that all of the air has been removed when you get a steady stream of hydraulic oil coming out of the bleeder screw.

5. Now, using the lowering lever, lower the lift to the floor and check the oil level in the power unit reservoir to be sure it is at the proper level. Refill oil reservoir to the proper level as needed and replace cap.

6. Cycle the lift up and down several times to ensure safety latches engage properly. If the latches function out of sync then tighten the cable on the latch that engages first.

After doing this procedure the hoist should travel up and down smoothly and at a consistent speed during operation.

How to bleed a 2 post clear floor car hoist- ACE-4000BE

DO THIS IMMEDIATELY AFTER INSTALL AND BEFORE LOADING A VEHICLE ONTO THE HOIST

1. Press the UP Button to raise the hoist about 20-30cm off the floor. Leave the cap off the oil reservoir. DO NOT RAISE THE CARRIAGES TO MAXIMUM HEIGHT, JUST ENOUGH TO REMOVE ANY SLACK FROM THE CHAIN.

2. Press the DOWN button to disengage the safety locks on both columns and lower the hoist to the ground. Once the lift arms are resting on the ground continue pressing the down button or lock button for several seconds more.

3. Using someone’s help press the lock button and go to each cylinder and confirm that the silver ram is completely retracted into the black outer sleeve. If it is not, then pull the chain or push down on the pulley in order to fully collapse the cylinder.

4. At this point any air should be gone from the lift hydraulic system, if not, repeat the above steps 1 through 3.

5. Cycle the lift up and down several times to ensure safety latches engage properly. If the latches function out of sync then tighten the cable on the latch that engages first.

After doing this procedure the hoist should travel up and down smoothly and at a consistent speed during operation.

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