Net Tractor Talk
       

Go Back   Net Tractor Talk > Brand Specific Forums > Ford / New Holland Forum

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 02-04-2011, 11:06 AM
dbohann66 dbohann66 is offline
Junior Member
 
Join Date: Oct 2010
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
dbohann66 is on a distinguished road
Default Slow or no hydraulics

I have a 1997 new holland backhoe. The hydraulics have been giving me problems lately. They either stop working altogether or work slowly and weak. When it quites alltogether it sounds like there is a binding and fluid gets hoter than usual, like the pump has a restriction. I have to kill the machine and wait 10min or so and restart. Somethimes this works sometimes not. I have rebuilt rear backhoe control valve and front loader control valve, changed filters and fluid. Only thing I have not checked is pump. Any sugestions other than what I have all ready done?
Thanks for any help
Reply With Quote
  #2  
Old 02-04-2011, 11:16 AM
bordercollie's Avatar
bordercollie bordercollie is offline
Senior Member
 
Join Date: Apr 2007
Location: central Mississippi
Posts: 4,070
Thanks: 1,237
Thanked 936 Times in 566 Posts
bordercollie is on a distinguished road
Default

Hi dbohann66 and welcome ! This is a very , very long shot- but we had a hydraulic hose collapse internally and little pieces of it stopped up some of the ports on the old JD4020's loader. It worked very slowly because the fluid was almost blocked by the hose debris. Bordercollie
Reply With Quote
  #3  
Old 02-04-2011, 01:59 PM
bczoom bczoom is offline
Senior Member

 
Join Date: Apr 2006
Posts: 5,983
Thanks: 236
Thanked 569 Times in 426 Posts
bczoom is just really nicebczoom is just really nicebczoom is just really nicebczoom is just really nice
Default

Another long shot, but if you've recently disconnected the hydraulics, re-check all of the quick-connects to make sure they're on all the way (and that you didn't inadvertently switch 2 hoses).
Reply With Quote
  #4  
Old 02-04-2011, 11:25 PM
dbohann66 dbohann66 is offline
Junior Member
 
Join Date: Oct 2010
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
dbohann66 is on a distinguished road
Default

I had thought about a collapsed hose but had ruled it out only because this problem does not occure all the time just at random. It can be working good and in sec just shut down and have no hydraulics at all. Could it still be a main hose collapsed?
Reply With Quote
  #5  
Old 02-05-2011, 10:41 AM
ki0ho's Avatar
ki0ho ki0ho is offline
Super Site Supporter
 
Join Date: Jan 2010
Location: Lake of the Ozarks
Posts: 102
Thanks: 1
Thanked 2 Times in 2 Posts
ki0ho is on a distinguished road
Style:
Default slo hyds.

I would sure check into the posability of some trash in the system like BC mentioned...or you might check to see if there might be a bypas that is sticking.....oil getting hot real quick usely points to a restriction under preasure ......just my two cents.....good luck....
Reply With Quote
  #6  
Old 02-05-2011, 12:58 PM
bordercollie's Avatar
bordercollie bordercollie is offline
Senior Member
 
Join Date: Apr 2007
Location: central Mississippi
Posts: 4,070
Thanks: 1,237
Thanked 936 Times in 566 Posts
bordercollie is on a distinguished road
Default

We undone our hydraulic hoses and found as we traced forward all sorts of rubber crud. It had also gotten in the metal piping running along the cross brace on the bucket too. We got rid of the bad hose .Then when we detached the hose on the cylinder it was packed with debris. It was no fun cleaning it all of of the piping. What a mess. I do remember after removing all we could get to , hooking up to the tractor and flushing fluid through it -with it detached before the cylinder- and stuff still coming out. We replaced the bad hose and it worked fine. I also remember pushing the cylinder back and forth under hydro pressure with only one hose connected to make sure no debris was left in the cylinder itself and some debris exited the cylinder through the hose less port when we did this. I don't know anything about hydraulics but hope this helps.I wish I had paid more attention to my Dad's line of work - hydraulics. Bordercollie

Last edited by bordercollie; 02-05-2011 at 01:11 PM.
Reply With Quote
  #7  
Old 02-08-2011, 08:59 AM
dbohann66 dbohann66 is offline
Junior Member
 
Join Date: Oct 2010
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
dbohann66 is on a distinguished road
Default

Quote:
Originally Posted by ki0ho View Post
I would sure check into the posability of some trash in the system like BC mentioned...or you might check to see if there might be a bypas that is sticking.....oil getting hot real quick usely points to a restriction under preasure ......just my two cents.....good luck....
What do you mean a bypas sticking? I had a Newholland dealer tell me the main system pressure relief valve. I am wondering about the pump. I noticed that I looks like it has benn taken off befor as there is silicone between the pump and tranmission. When weather permits me I will check into this.
Thanks for the replies
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump





All times are GMT -5. The time now is 07:54 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 2002 - 2018, www.DotHQ.com