Question about RTO 20 Ton Air / Hydraulic Bottle Jack

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Hydraulic jack will not lower

2 ton hydraulic jack will not lower. I have tried purging air but have purged most of the oil.
Thanks in advance

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Hs it been overfilled? I sugest removin all the oil. lowering the jack, then re-filling withoil with the jack in the closed possition.

Posted on Oct 11, 2009

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Posted on Jan 02, 2017

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Husqvarna 4623 zero turn mower will not move


Maintanance - How to purge Hydraulic drive system Published 01/13/2010 11:56 AM ' Updated 06/02/2015 02:52 PM
How do I purge the hydraulic system?
Hydrostatic transmissions use oil, under pressure, to provide movement for the tractor. The fluid is pressurized with a pump inside the transmission. If any air is in the fluid, the pump will try to pressurize air. This condition is known as cavitation, and is detrimental to the pump since it allows the pump top operate dry. When the pump cavitates it is not pressurizing any fluid, so the transmission is not able to provide the movement needed.
If your mower is new, or has been stored for a long period (longer than 2 months) the transmission needs to be purged before use. Also, if you experience loss of drive, or slower response, then the transmission should be purged first.
The following procedure will remove trapped air inside the transmission(s).
IMPORTANT: SHOULD YOUR TRANSMISSION REQUIRE REMOVAL FOR SERVICE OR REPLACEMENT, IT SHOULD BE PURGED AFTER REINSTALLATION BEFORE OPERATING THE TRACTOR.
Step 1- Place the rear of the mower safely onto jackstands on a level surface with engine off and parking brake set.

Step 2- Disengage transmission by placing freewheel control, located at the back of the frame, in the freewheeling position.

2a- Mowers with seperate pumps and wheel motors the freewheel is activated by turnign the bypass valves, one on each pump, two full turns.
The oil resevoir needs to be filled to the specifications listed in the owners manual before starting the purge procedure.
Step 3- Sitting in the operators seat(riders), start engine. After the engine is running, move throttle control to slow position. With motion control levers in neutral (N) position, slowly disengage clutch/brake pedal.
Step 4-Move motion control levers to full forward position and hold for five (5) seconds. Move levers to full reverse position and hold for five (5) seconds. Repeat this procedure three (3) times.

NOTE: During this procedure there may be some movement of the drive wheels, but they are not under load. The air is being removed from hydraulic drive system.

Step 5-Move motion control levers to neutral (N) position. Shutoff engine and set parking brake. Check and add oil as needed for units with an oil resevoir.

Step 6-Engage transmission by placing freewheel control into driving position, or by closing the bypass valves on the pumps.
Step 7-Sitting in the operators seat, start engine. After the engine is running, move throttle control to full speed. With motion control levers in neutral (N) position, slowly disengage clutch/brake pedal.

Step 8-Slowly move motion control levers forward, after the tractor moves approximately five (5) feet, slowly move motion control levers to reverse position.
After the mower moves approximately five (5) feet return the motion control levers to the neutral (N) position. Repeat this procedure with the motion control levers three (3) times.

Step 9-Your mower is now purged and now ready for normal operation.For further information or assistance, we recommend contacting your lo

Aug 06, 2016 | Husqvarna Garden

1 Answer

Hydraulic jack manuals


Look for a rubber or plastic grommet on the cylinder in the jack. That is the fill hole.

Aug 03, 2014 | Hein-Werner Hein Werner HW93642 2 ton...

1 Answer

I just inherited an older 3 ton floor jack. Guardian make, Model 4-102, 3000 lb. capacity. What type of fluyid does it take. who would I contact for repair parts? thanks


It was made by Hein-Werner, Similar to the WS model also 3,000lbs (not 3 tons). Been out of production at least 20 years or more. Guardian was Hein-Werner's cheaper off brand. Kind of a "dumbed-down" version. Also made an H-101 which was similar to H-W OS (O-Boy) model of 2500lbs.

Try a hydraulics dealer who sells Hein Werner parts. although obsolete, about 1/2 the parts are still available.

Lastly: Hydraulic jack oil. Never use brake fluid. Engine oil in a pinch, by I would never do it.

Jun 22, 2011 | Garden

1 Answer

My recently purchased used MT180HD tractor will not move. I replaced all hydraulic oil,checked the clutch,and adjusted linkage. What next??? Are my hydraulic pumps bad?? Can a mechanical transmission be...


hi there joedorava

is there input to pumps , are there any leaks in the system either oil / air

have you purged all the air from the hydro units and wheel motors

if air is entraineed in oil , you may get alot of noise from caviatation in the pumps and wheel motors also heat , and vibration and no movement until all the air is gone
top up oil to correct level

caviatation can be quite destructive on pumps etc

i assume you used the correct hydraulic fluid for the unit in question

have you checked changed hydraulic filters when changed hydraulic fluid ?

other than that cant give any more info

cheers pauly46


May 25, 2011 | Diesel Compact Tractor 4x4 20hp Machine ...

1 Answer

Clutch slave cylinder how to bleed


HYDRAULIC SYSTEM BLEEDING Do not use fluid which has been bled from a system to fill the reservoir as it may be aerated, have too much moisture content or possibly be contaminated. Clean the dirt and grease from the cap to ensure that no foreign substances enter the system. It is also important to maintain the fluid level in the clutch reservoir to the top step with hydraulic clutch fluid Hydraulic Clutch Fluid GM P/N 12345347 or equivalent.
  1. Attach a hose to the bleeder screw on the clutch actuator assembly and submerge the other end of the hose in a container of hydraulic clutch fluid.
  2. Depress the clutch pedal slowly and hold.
  3. Loosen the bleeder screw to purge air.
  4. Tighten the bleeder screw to 18 inch lbs. (2 Nm).
  5. Let up on the clutch pedal.
  6. Repeat Steps 2 through 5 until all air is purged from the system.
  7. Fill the reservoir to the top step with hydraulic clutch fluid.
  8. Repeat this bleeding procedure if there is a grinding noise during the clutch spin down procedure.
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Oct 13, 2010 | 1998 Chevrolet Cavalier

1 Answer

Where Do I Fill Oil Into My Car Jack?


Usually only oil has to be added if the jack will not pump up, not down. They go down either by added retraction springs or by the weight of what they were lifting.
Anyway, look for a small rubber plug about 1/2" in diameter on the hydraulic unit, lay the unit on it's side so when the rubber plug is removed the oil won't run out. Once you remove the plug, fill it up with hydraulic jack oil from an auto parts store. Put the plug back in, you may have to work the jack to purge air bubbles, by pumping it up and down a few times.

May 05, 2010 | Sander Industrial Original Clarke Floor...

1 Answer

Hydraulic jack wont move.


Hi, A hydraulic jack is a pretty simple device, consisting of a piston/ cylinder, an oil reservoir, and a valve. You close the valve, pump the handle, which pumps oil into the cylinder and raises the jack. When you open the valve, it allows the oil to flow back into the reservoir and the jack will lower. If it still has oil in it, ( or is still in the up position) start with the valve, you should be able to remove it an clean it up. If you need more help, let me know. Good Luck, this should Fixya!

Mar 20, 2009 | RTO Hydraulic Service Spider Jack,2 1/2...

4 Answers

Sears 4 Ton Hydraulic Automotive Floor Jack-Will Not Lift ?


I have a Sears 1 1/2 ton floor jack. I was able to buy a repair kit from Astro Pneumatic Tool Company 372 OLD U.S. Hwy 52 South Mount Airy N,C 27030-8093
1-800-221-9705
John

Sep 27, 2008 | Plumbing

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