Results 1 to 5 of 5
  1. #1
    New Member
    Join Date
    Sep 2012
    Posts
    2
    Location
    Ft Smith, AR
    Tractor
    Ford 3000

    Default Ford 3000 Very Slow Hydraulics

    I'm helping out a retired neighbor who recently bought a mid 70's Ford 3000. It's had a loader installed on it by cutting the pressure line on the right side coming from the pump and tying in the loader control valve. The problem is the loader is extremely slow. After starting it up, it takes 1-2 minutes before the loader will move at all. I tore into the rear and checked the filters. They were in good shape. Next, I rebuilt the pump including all new o-rings and seals. I found that the pump drive shaft had some wear on it where the seal rides behind the bearing so I offset the new seal about 1/8" to make sure it has a smooth surface. Still seems to have the same problem, though. I don't have a lot of hydraulic test equipment, but when priming the pump, I loosened the fitting going to the loader control valve and I seem to have good flow. Based on the fact that it takes so long to start working after starting up, I'm thinking I have a problem in the suction line, possibly sucking air someplace. I'm at a loss where it would be, though, since I've replaced all the seals around the pump and don't see any evidence of leaks in the line.

    Has anyone ever solved a problem like this? Any ideas would be greatly appreciated.

  2. #2
    Veteran Member Jerry/MT's Avatar
    Join Date
    Feb 2008
    Posts
    2,010
    Location
    Western Montana
    Tractor
    New Holland TD95D, Ford 4610 & Ferguson TO-30

    Default Re: Ford 3000 Very Slow Hydraulics

    Are you using the correct fluid. Somefolks use gear oil instead of the proper trans/hydraulic fluid. It's possible that you have a leaky relief valve that's "stealing" flow from the pump circuit. Pumps sucking air will "scream", making a high frequency noise. Are you sure the seal you replaced and offset is sealing? Maybe a speedy sleeve should have been used o the shaft to improve the seal surface.

    Loader speed is controlled by the pump flow rate. Most hydraulic pumps on these older tractors were sized for the three point hitch only and a separate, crankshaft driven front pump was used for loaders. Some times a pto driven pump was used. The use of a small capacity pump will slow down loader speed. It should respond to the control valve right away albiet slowly raising the loader.

  3. #3
    Epic Contributor Soundguy's Avatar
    Join Date
    Mar 2002
    Posts
    48,316
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: Ford 3000 Very Slow Hydraulics

    do you have a front mount pump.. or are you talking about the engine side pump? if side pump, i'm amazed at the trouble went thru to get into the hyds.. since you could have used a remote valve under the seat, or asc valve.. or even a PB plate under the blank off plate.,

    the suction line has an oring and is prone to leak.. the pressur eline is a comp fitting and can too.. but does not seem to be your issue..

  4. #4
    New Member
    Join Date
    Sep 2012
    Posts
    2
    Location
    Ft Smith, AR
    Tractor
    Ford 3000

    Default Re: Ford 3000 Very Slow Hydraulics

    Quote Originally Posted by Soundguy View Post
    do you have a front mount pump.. or are you talking about the engine side pump? if side pump, i'm amazed at the trouble went thru to get into the hyds.. since you could have used a remote valve under the seat, or asc valve.. or even a PB plate under the blank off plate.,

    the suction line has an oring and is prone to leak.. the pressur eline is a comp fitting and can too.. but does not seem to be your issue..
    It only has the engine side pump, no front pump. Where is the o-ring you're talking about? I'm guessing it's on the lower right side where the lines go into the rear end. By the way, where's the pressure relief valve on this tractor?

  5. #5
    Epic Contributor Soundguy's Avatar
    Join Date
    Mar 2002
    Posts
    48,316
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: Ford 3000 Very Slow Hydraulics

    first.

    time to get a service manual.

    oring at pump end is the one that usually leaks.

    center housing

Similar Threads

  1. Ford 640 Hydraulics slow
    By lawdealer in forum Hydraulics
    Replies: 2
    Last Post: 12-03-2011, 06:46 PM
  2. Ford 3000 very slow hydraulics
    By Mbbuk in forum Hydraulics
    Replies: 5
    Last Post: 06-10-2011, 01:02 PM
  3. 1964? Ford 3000 diesel engine has very slow acceleration
    By humbll in forum All Other Brands
    Replies: 3
    Last Post: 03-20-2011, 09:10 AM
  4. Ford 3000 Hydraulics
    By deckchick in forum New Holland Owning/Operating
    Replies: 1
    Last Post: 08-16-2010, 03:11 PM
  5. Lift is Slow on Ford 3000
    By browndd1 in forum Parts/Repairs
    Replies: 1
    Last Post: 11-01-2009, 01:00 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.