Author	[Modern View]
Ultradog MN 11-08-2012 11:18:16 184.100.104.240 Report to Moderator	I'm still not getting this pump to bleed properly and/or the lift arms to stop chattering. They say if you aren't much of a mechanic keep changing parts till you find the problem. I have had 3 different pumps on this tractor, including an NOS pump that I have. They all do the same thing. I have had both ends of the suction line off, cleaned them with lacquor thinner and gooped them with silicone. I have bled about 3 gallons of oil out of the pump - high speed, low speed. I blew lacquer thinner through the suction line to possibly clean out the filter. Getting frustrated here. What should I do? [Reply]   [No Email]
flyingace 11-11-2012 07:40:04 64.77.223.103 Report to Moderator	Re: 3000 hydraulic pump part 2 in reply to awhtx, 11-08-2012 11:18:16   Ultradog MN said: (quoted from post at 15:22:37 11/08/12) Well, I don't know what I did but it started working properly. Darned things! I had put the old pump back on and let it run about 1k rpm for a while. Dunno. I will run it again tomorrow to see if it holds prime. Hope so. I wish I knew why it wouldn't prime before though. Just to better unterstand it all. Thanks to all! Don't want to rain on your parade, but mine does this as well. I think I have it fixed because it's working every time I start it up. The next thing I know, it won't lift - have to prime it again. Hopefully, yours is permanent. Since mine is just a chore tractor, I live with it. But I have to admit, not knowing what's causing it irks me. This post was edited by flyingace at 07:41:08 11/11/12. [Reply]  [No Email]
Greg Wolodkin 11-11-2012 04:49:09 207.255.190.138 Report to Moderator	Re: 3000 hydraulic pump part 2 in reply to grayrider, 11-08-2012 11:18:16   Glad to hear you got it working. When you put the new pump back on, how much priming did you do? I ask because I've done all the things you mention except for the silicon, and then some.. actually removed and cleaned the suction filter, replaced the paper filter, replaced all O-rings in the lift cylinder and all the square-cut seals on both ends of the plumbing to the pump. Lift works but chatters. Maybe it will work its way out of that funk, but if I can accelerate the process ... This post was edited by Greg Wolodkin at 04:51:41 11/11/12. [Reply]  [No Email]
Hobo,NC 11-08-2012 16:20:27 71.30.78.35 Report to Moderator	Re: 3000 hydraulic pump part 2 in reply to ohjeffoh, 11-08-2012 11:18:16   Quoting Removed, click Modern View to see Just the same as mine did... Like magic it quit chatter'n... I had replaced all the O-rings in the hydraulics except any internal to the pump... It chattered so bad I you would thing something was in a binde... I do not buy into a o-ring leaking on the suction tube were it enters the rear case in my opinion you can rule that one out as a possible issue... [Reply]  [No Email]
RickB 11-08-2012 14:38:32 69.195.58.63 Report to Moderator	Re: 3000 hydraulic pump part 2 in reply to Ultradog MN, 11-08-2012 11:18:16   Silicone usually causes more problems than it ever fixes. New o-rings of the proper size and clean, smooth surfaces on the suctioon tube and adapter where the seals contact are necessary. [Reply]  [No Email]
Ultradog MN 11-08-2012 14:22:37 184.100.104.240 Report to Moderator	Re: 3000 hydraulic pump part 2 in reply to Ultradog MN, 11-08-2012 11:18:16   Well, I don't know what I did but it started working properly. Darned things! I had put the old pump back on and let it run about 1k rpm for a while. Dunno. I will run it again tomorrow to see if it holds prime. Hope so. I wish I knew why it wouldn't prime before though. Just to better unterstand it all. Thanks to all! [Reply]  [No Email]
Bern 11-08-2012 16:11:02 66.218.203.192 Report to Moderator	Re: 3000 hydraulic pump part 2 in reply to Ultradog MN, 11-08-2012 14:22:37   I've had more than one of those pumps do exactly what you describe. One thing is for sure, they don't bleed very fast. [Reply]  [No Email]
Vito 11-08-2012 12:46:23 68.118.193.1 Report to Moderator	Re: 3000 hydraulic pump part 2 in reply to Ultradog MN, 11-08-2012 11:18:16   Any pinhole leaks in the lines? Vitoi [Reply]  [No Email]
leej 11-08-2012 12:40:39 72.181.173.171 Report to Moderator	Re: 3000 hydraulic pump part 2 in reply to Jerry/MT, 11-08-2012 11:18:16   Quoting Removed, click Modern View to seeTake it and $50,000 to JD dealer & be sure lift works before you take the new 'green' one home. That or build yourself a wooden tractor, that you can fix. :lol: [Reply]  [No Email]