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I have a Probasics 0086 hydraulic patient lift. The boom does not raise when pumping handle. I believe hydraulic oil needs refilled. How do I add more oil to piston.

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Can u post pic of pump there are all diferent types but most are flat head screw take screw out fill with oil

Posted on Apr 23, 2017

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The dig boom will not raise or lower on a 1020 walk behind trencher

Craig, I do not have a lot of experience with trenchers, if hydraulic operated not enough oil/check reservoir,, one of the valves/controls may be stuck, you will have to follow line from boom cylinder and trace it back to the valve and dismantle and repair. Secure boom as to not harm you or others.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

Apr 13, 2016 | Cars & Trucks

1 Answer

Case 580k backhoe. Why do none of the levers to the boom work?

some hydraulic units use a flow rate valve in the bottom of a ram to stop the operation in the event of a hose failure
it effectively locks the oil in the ram to stop what is raised from free falling and becoming dangerous
Talk with the service dealer to see if you have such a valve and how to release it after repairs are carried out

Aug 30, 2015 | Cars & Trucks

1 Answer

Replace cylinder in bottom boom on hiranger bucket truck

ive heard of folks doing it without a crane but i would not try it , alignment is too critical with getting guides and stops back in and with nothing to move boom that would be too difficult

anyways: suspend boom end with double straps from crane , disconnect hydraulic/electric swivels/plugs at truck end lift end of boom slightly with boom all the way extended straight out , remove acess panel (both sides) at jct of upper/lower boom section . remove C clip one side drive out pin oppisite side (wiggle boom to clear pin) locate stops in lower section boom end unbolt , slowly pull upper boom with crane away take care of hydraulic lines and electric wires set on floor on wood cribbing , locate bottom of cylinder truck end find C clip and pin Might be behind a trim cover that might need to be remove drive out pin also remove bottom cylinder hyd hose connect crane to cylinder end move out a foot or so remove top cyliinder hydraulic hose then carefully slide out cylinider with crane , Note if your valves are not tight and new oil will leak back and cause boom base to sag when you unhook hydraulic hoses , your gonna need to block this up with wood cribbing just in case

reverse removal process to install new one , also i would not just install a new seal (you can) with out having cylinder recromed I'll bet it's rusty thats what tears the seals up
and allways replace entire oil volume in hydraulics your old seal is in old oil not good for the new one

Apr 26, 2014 | 1985 Chevrolet Chevy

1 Answer

My excavator hitachi ex200-1 weak swing and when you swing then stop vibration begin on turn table when i stop to swing,and when i swing and lift cylinder raise,vibration on the turn table will contin

Not sure would need to have a good look ,but i suspect a safety valve isnt closing properly causing thumping within the hydraulic system which is the vibration you can feel,shouldnt cost a lot to repair providing the faulty valve can be located so return to the dealer as they will have a good idea as yours isnt the first to go wrong iam sure

Sep 24, 2012 | Cars & Trucks

1 Answer

Top worked fine yesterday but today tried to let down only clicked

It is a hydraulic pump that applies pressure to the 2 hydraulic pistons to raise & lower the top. So, check for something obstructing movement first.

The convertible top:
  • is motor-driven.
  • requires parking brake engaged to complete circuit for operation.
  • is equipped with a back window glass (42006) . The back window glass is permanently attached to the folding top back window curtain (52500) and cannot be opened.
  • Damaged fluid reservoir.
  • Damaged folding top hydraulic cylinders .
  • Damaged folding top motor upper and lower hose .
  • Damaged convertible top regulator.
  • Parking brake not engaged.
  • Open power distribution box circuit breaker CONV TOP (30A), fuse junction panel Fuse 1 (15A).
  • Circuitry open/shorted.
  • Damaged convertible top switch.
  • Damaged raise/lower relay .
  • Damaged folding top hydraulic lift motor and plate kit .

  • Convertible Top Does Not Raise/Lower
  • Open circuit breaker or fuse.
  • Circuitry open/shorted.
  • Damaged folding top switch.
  • Damaged raise/lower relay .
  • Damaged folding top hydraulic lift motor and plate kit .
  • Parking brake not engaged.


Jun 29, 2011 | 1998 Ford Mustang

2 Answers

Oil pressure drop to 20 lbs lifter start to rattle

You may have a clogged oil pump pick up screen, a bad oil pump or worn main bearings or cam bearings.

Jun 13, 2010 | 1992 Chevrolet C1500

1 Answer

There is a clicking noise ( raises and lowers ) when idleing . someone thought it was a cam noise

hi this could be a cam noise, but also can be a tappet noise, if you have not changed the oil in a while it could be the oil has gone thin and needs new oil, the other thing is, blocked hydraulic tappet's, best way to sort this is to use an engine flush which you add to your old oil, run the engine for half hour, then drain, then refill with new oil, do not use 15w/30, try using 20w40 this is a thicker oil and will possibly silence the tappet's, but if the engine has done allot of miles these may need replacing altogether.....hope this helps

Feb 26, 2010 | 2004 Volvo S40

1 Answer

Convertible top

here's some info

Symptom Chart Condition Possible Source Action
  • Folding Top Does Not Raise and/or Lower
  • Blown fuse(s).
  • Circuitry open/shorted.
  • Damaged folding top switch.
  • Damaged raise/lower relay .
  • Damaged folding top hydraulic lift motor and plate kit .
  • Parking brake not engaged.
  • Go to Pinpoint Test A.
  • Top Hesitates and/or Comes Up Uneven
  • Damaged folding top hydraulic lift motor and plate kit .
  • Damaged folding top motor upper and lower hose .
  • Damaged folding top hydraulic cylinder .
  • Damaged folding top linkage.
  • Go to Pinpoint Test B.
  • Top Does Not Raise or Does Not Go All the Way Up
  • Damaged folding top linkage.
  • Damaged folding top hydraulic lift motor and plate kit .
  • Go to Pinpoint Test C.
  • Hydraulic System
  • Damaged fluid reservoir.
  • Damaged folding top hydraulic cylinder .
  • Damaged folding top motor upper and lower hose .
  • Go to Pinpoint Test D.

Lift Cylinder, Power Top Removal and Installation
NOTE: The cylinder rods should be in the fully-retracted position.
  1. Remove pump and motor as outlined.
  1. Remove the upper and lower hose fitting from the folding top hydraulic cylinder (50600) . Use absorbent rags or a container to catch any hydraulic fluid that leaks out when removing the fittings.
  1. Remove each of the service cylinder plugs one at a time and attach the hose fittings. NOTE: Be sure each fitting is installed in the correct position on the folding top hydraulic cylinder .
    NOTE: Make sure that the tetra seal is installed in the bottom of each of the folding top hydraulic cylinder ports before attaching the upper and lower hose fittings.
  1. Connect the folding top hydraulic lift motor and plate kit (533A00) to a 12-volt power source and cycle the folding top hydraulic lift motor and plate kit in and out several times to purge the air from the hoses. Some noise squeal may be noticed due to the air.
  1. Carefully remove the rubber fill plug from the back and the reservoir and check the fluid level. The level should be at the bottom of the filler hole. If necessary, add Synthetic Mercon® Multi-Purpose Automatic transmission fluid E6AZ-19582-B (ESR-M2C163-A2) or equivalent.
  1. Replace the fill plug with a new fill plug.
  1. To install, reverse Removal procedure.

Jan 04, 2009 | 1989 Ford Mustang

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