Bleeding Air From a Jack

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Tips and hints for your business

During shipping, a jack can be tipped causing air to get in to the cylinders.  For this reason, when you first take a new jack out of the box, it is essential that all of the air is bled out of the jack before use.

In addition, you should follow this procedure on a monthly basis or when you see any laps in lifting power.  Bleeding the jack on a monthly basis will help keep your jack working at peak performance.

How to Bleed Standard Service and Bottle Jacks
 

 

1. Pump 10 times with valve open

Bottle1.jpg

2. Close valve and raise to fully extended height
 

 

3. While in full extension, continue to pump 10 times

Bottle2-3.jpg
 

4. Release the valve and lower cylinder
 

5. Repeat two times to remove all air from the cylinder if necessary

Bottle4-5.jpg
 


* Most often this will bleed the jack entirely.  If not, after the cylinder has been released and lowered, gently pull the oil fill plug on the side to help release any trapped air.

 

Bottle-bleed-(1).jpg

Please watch the video below for further instruction to bleed a service jack.
 

How to Bleed Hydraulic Axle and Bottle Jacks

1. Open release valve

Hydraulic1.jpg

2. Depress jack trigger for 30 seconds

Hydraulic2.jpg
 

3. While still depressing trigger, close release valve

Hydraulic3.jpg
 

4. Hold until cylinder is fully extended

Hydraulic4.jpg
 

5. Release trigger and open release valve until cylinder is fully retracted into base

Hydraulic5-(1).jpg
 


* Most often this will bleed the jack entirely. If not, after the cylinder has been released and lowered, gently pull the oil fill plug on the side to help release any trapped air.

 

Hydraulic-bleed.jpg
 
Please watch the video below for further instruction to bleed a hydraulic jack.