John Bean 40HP210ES, Instruction Manual

10.0 BLEEDING PROCEDURES  

After filling the unit, there will still be trapped air in the system. You must bleed 
the system as instructed for proper operation of lift. 
 

1.  To bleed the air from the hydraulic system, raise the internal cylinders 

approximately 12”, using the pumping unit. (LIFTING STRUCTURES 
MUST BE OFF).  

2.  Loosen the 1/4” hex head bolt at the end of each internal cylinder, using a 

7/16” socket wrench. (DO NOT ALLOW THE INTERNAL CYLINDER TO 
ROTATE WHILE LOOSENING OR TIGHTENING THIS PLUG).  

3.  Step down on the end of each cylinder to force the trapped air from the 

system. Repeat if necessary to remove all air till oil begins to flow from the 
plug.  

4.  Once this is completed make sure to properly apply sealant to these plugs 

and tighten to prevent leaking.  

5.  Open lowering valve on pump. Step on the ends of these cylinders to 

force them back down.  

6.  Add oil till recommended level in the tank is met.  
7.  Attach the arm structures. Torque 7/8” bolster bolts to 250 lbf-ft.  
8.  Raise lift fully and wipe pistons down with a light coat of silicone lubricant 

or WD-40.  

9.  Lower the lift and record oil level in the pumping unit.  
10. Pressure check bleed-plugs by inspecting them through the hole in the 

center of the lifting structures.  

11. Check the hydraulic tee and the fitting on the pump for any leaks, tighten 

if necessary.  

CAUTION! 

DO NOT FULLY RAISE LIFT WITHOUT SUPERSTRUCTURES 
ATTACHED. THE PISTONS WILL COME OUT OF CASINGS AND 
MAY BE DIFFICULT TO LOWER WITHOUT THE WEIGHT OF THE 
SUPERSTRUCTURE ON THEM. 
 
WHEN BLEEDING CYLINDERS, DO NOT ALLOW INNER 
CYLINDERS TO ROTATE. THIS MAY CAUSE HOSE KINK. 
 
KEEP ALL LIQUIDS AWAY FROM LIFT (water, cleaners, acids, 
etc). ANY LIQUID WHICH GETS INSIDE THE LIFTING UNIT WILL 
CAUSE INTERNAL DAMAGE AND WILL NOT BE COVERED 
UNDER WHEELTRONIC’S WARRANTY. 

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