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Subject: 3 pt lift response

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BrianS, NE    Posted 11-27-2017 at 19:32:57 [URL] [DELETE]        [Reply] [Email]  
  • 3 pt lift response
  • OK. So I have been fighting this for a while. I realize the best solution may have been to tear the pump apart and start fresh, but didn't get it done.

    Background. 8N, lifts strong, not much leak down.

    Issue is very slow dropping when I want it down. Last year, I dropped the pump, cleaned really well including a bath in diesel. I also replaced the exhaust valve spring after consultations with folks here.

    Put it all back together, and nothing changed. I ran out of time and had to get ready for winter and suffered through it.

    I have a second 8N which had no issues. My thought was to just swap the pump into my worker and then work on the removed pump as time permitted.

    As you can guess, the pump from #2 put into #1, the worker that had the issue, is exhibiting the same slow drop.

    My question is, is there somewhere else in the "plumbing" that could be causing the slow response to drop the implement?

    Am I making an sense?

    Thanks guys.....

    deanostoybox    Posted 11-27-2017 at 22:43:59 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 3 pt lift response
  • I can imagine a chunk of something buoyant in oil inside the cylinder too big to fit in the passage that will let oil enter, but when the pressure is released it rushes to the hole and stops it up partially so the oil leaks slowly out. I cannot imagine that is very likely though:-) More likely something to do with the linkage adjustment not letting the exhaust valve open completely. Does it exhibit the same behavior in both draft mode and position control mode?

    36 coupe    Posted 11-28-2017 at 21:47:55 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 3 pt lift response
  • 90 gear oil gets stiff around 30 degrees.Icant push the arms dowm while hitching up in cold weather.Have to shut the engine off.

    grizz    Posted 11-27-2017 at 20:36:27 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 3 pt lift response
  • do you have any weight on it can you stand on the bars to make them go down?

    Brian's, ne    Posted 11-27-2017 at 21:05:22 [URL] [DELETE]        [Reply] [Email]  
  • Re: 3 pt lift response
  • Fat guy or heavy Dearborn blade make little difference.

    Charles Krammin    Posted 11-27-2017 at 21:27:24 [URL] [DELETE]        [Reply] [Email]  
  • Re: 3 pt lift response
  • I would check the spring that between the piston and fork as it is what forces the release valve in. could be weak. Put your hand trough the access hole of sideplate and shove the fork in and see if it goes down fast that way.
    I'm sure you got the fork attached at both side of the fork?
    Charles Krammin

    BrianS, NE    Posted 11-27-2017 at 21:43:14 [URL] [DELETE]        [Reply] [Email]  
  • Re: 3 pt lift response
  • Sorry Charles. Not following you. Can you be more specific?

    JMOR    Posted 11-27-2017 at 22:02:29 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 3 pt lift response
  • I think Charles is thinking 9N/2N, not your 8N

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