Go BottomLoader
 | lakeman
Join Date: Jul 2003 Posts: 39 Rollag Minnesota 
|
2004-08-18 93806
I have a L4330HST and a LA853 loader. I take the loader on and off several times a year. The last time I took it off I could not get one of the hoses off. I released the hydraulic pressure by moving the control levers and that did the job. When I was putting the loader back on I couldn't get the hoses attached. The hydraulic pressure was so high that I couldn't get the couplers on. I started the tractor stoppped it and moved the rear hydraulic controls and loader controls to release pressure and the pressure still wouldn't release. I kept doing this for about a half hour and finally got the hoses attached one by one. Could there be something wrong to cause the hydraulic pressure not to release? I even went and put on a rear attachment to see if that would help it release after I shut off the tractor. I am a novice at this stuff but I have taken the loader off a half dozen times before and never had this problem. Any ideas?
Thanks for the help!
Reply to |
Quote Reply |
Add PhotoLoader
 | beagle
Join Date: Jan 2004 Posts: 1333 Michigan 
 Pics
|
2004-08-18 93810
When removing the loader, always shut down the tractor and move the controls to all positions several times to try to relieve any pressure and bring the loader to a "rest" position before disconnnecting the lines. Sometimes after the loader has been sitting, it will still shift, building some pressure in the lines due to the difference in volume from one side of the cylinders to the other as the loader continues to settle. Best you can do is try to get the loader in a rest position before disconnecting the lines with the tractor shut down. If you move the controls several times, you will notice that the bucket will re-adjust itself several times before it is at rest.
Hope this helps. ....
Reply to |
Quote Reply |
Add PhotoLoader
| texbaylea
Join Date: Feb 2004 Posts: 51 Brazos County, Texas
|
2004-08-18 93821
If there was a large difference in temperature (hotter) fluid expansion will make a difference. Direct sun exposure makes it worse. I have a grapple on the bucket on my tractor and I had parked it where I could easily see it from the house. I did not use it during the course of the next day but I watched it open up as the day grew hotter and then close back down as the sun went down. Get yourself a soft face hammer and tap the poppet valve on the male half to relieve pressure on that side of the system. ....
Reply to |
Quote Reply |
Add PhotoLoader
| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley 
|
2004-08-18 93824
I guess it's obvious that the tractor is off. I put the loader in float and then work the bucket both directions. Unless the lift in float relieving the bucket pressure can re-pressurize the lift hoses if the bucket isn't flat.
Hoses on implements definitely pressurize in the sun. One year it happened a lot when the tractor and implements were outside. A rag wrapped around the male couplers and pushing against a tire worked most times for the male couplers I have. A female coupler takes a soft punch and a hammer. ....
Reply to |
Quote Reply |
Add PhotoLoader
| cthonestguy
Join Date: Jun 2004 Posts: 267 northeast
|
2004-08-18 93838
Be sure if you use either of the 2 top suggestions that you were eye protection and old clothes. The rag trick works good but you still have a shot at getting a dose of hydro fluid on your new shirt. I had an old Meyer plow that would always build up pressure when unhooked for a while. I always had to releve the pressure by pushing the male hoses against a soft block of wood. It's messy but it works. ....
Reply to |
Quote Reply |
Add PhotoLoader
| hardwood
Join Date: Dec 2002 Posts: 3583 iowa
|
2004-08-19 93844
Lakeman, we've had the same problem for years on farm equipment and 99% of the time the sun is the culprit. Our latest idea was to put a "T" in the circut anywhere handy with a high pressure ball valve. Just open the ball valve a bit to relieve the pressure when trying to hook the hoses up. It's worked fine for us. Best of luck. Frank. ....
Reply to |
Quote Reply |
Add PhotoLoader
 | Art White
Join Date: Jan 2000 Posts: 6898 Waterville New York
Pics
|
2004-08-19 93847
Hardwood you made my day. I haven't heard of putting a T in the lines to help relieve pressure but there is no reason that it shouldn't work other then it might cause some alignment problems with attachemnts with weak cylinders but it would let you know you have a problem. This is not a new problem and the suggestions here have all been good. ....
Reply to |
Quote Reply |
Add Photo
Go Top
Share This