2910 Steering problem

Wheeldog · Jun 10, 2001

Thanks Kubmech/w3tcompact/icons/smile.gif. Sorry if I put you through the wringer to get there.

I haven't experienced the PS problem yet, and my mowing jobs usually take 1.5 - 2 hours at a pop. However, it has been a cool Spring to this point in CT, so the problem just may be waiting to show up at the same time as the hot weather.

Rob

Wheeldog · Jun 10, 2001

Kubmech,

I read through this thread after you bumped it to the top for me. I understand the gist of what you are saying, about the smaller reservoir in the PS circuit and the possibility of keeping too much heat in the fluid under certain conditions. You had said that the B24,27,29 all share the same (3.1 gpm) pump, but isn't the B2410's a lower capacity instead? (2.6 gpm PS / 4.4 gpm HST). I can't say as to how this would change things - smaller pump flow means less heat generated but smaller system volume (?) may make things worse? I just think its curious that we've only heard from one B2410 owner with this problem, and I know we have a few out there.

Rob

ronjhall · Jun 11, 2001

Wheeldog
Since I started this line. I thought I should respond on how my tractor is performing this year. I have not had a problem since transmission oil was changed last fall./w3tcompact/icons/smile.gif I haven't had to cut grass in temperatures above 80 degrees yet./w3tcompact/icons/tongue.gif I should get a chance this week. I will let you know how it goes after it is done. My dealer say that some of the 2710 and 2910 have had more than one oil change before problem goes away. These are tractors that are used by commercial owners.

Wheeldog · Jun 11, 2001

Thanks, Ron. We've got some 90+ F days coming by the end of the week, supposedly. I'm not overly concerned about the potential for a problem, just curious really

kubmech · Jun 11, 2001

Rob, I was informed that the flow rates in the manual "can't be right" when I asked the question. They should be 3.1 across the board. The 2410 pump is a different part number, that's why I asked the question, see my previous post in this thread(may have missed it). When I looked up the part numbers for the internal pump gears they were the same part number, which tells me, same size same flow rate. I kind of let it drop at the time, maybe when I get a chance I'll look into it more.

Wheeldog · Jun 11, 2001

Kubmech,

If you went to the trouble of looking up the part numbers of the gears then it sounds like you've already gone above and beyond the call. This is interesting to me first because I have a B2410 and second because I work for a company that designs and manufactures pumps (for aircraft, not tractors though /w3tcompact/icons/wink.gif). I agree that if the gear p/n's are the same that it should put out the same flow, unless the drive speed is somehow different or part of the discharge flow gets routed someplace else. I guess the answer lies somewhere in the difference between pump assembly p/n's.

Thanks for doing the digging. Meanwhile I have to go celebrate cause' my tractor just gained .5 gpm of pump flow/w3tcompact/icons/smile.gif.

Rob

DarinRay · Jun 11, 2001

Rob,

Congratulations on your new find. Hey that is quite a bit of improvement if you ask me. Here's an improvement for me too- my dump truck hyd pump had a pressure of 350psi and now just got a new pump installed after this one layed down and now I have 3600psi.wooooohoooooo /w3tcompact/icons/smile.gif

Darin

Wheeldog · Jun 11, 2001

Darin,

Congrats to you too. Sounds like you may have a catapult instead of a dump body now /w3tcompact/icons/wink.gif.

Rob

ronjhall · Jun 13, 2001

Rob
Well today was the first day over 80 degrees and had to cut the lawn./w3tcompact/icons/smile.gif Power steering started to act up again, just like last year./w3tcompact/icons/frown.gif Called the dealer. He is going to talk to <font color=orange> Kubota</font color=orange> and try to get a Field Service Tech out to look at problem. Will keep everybody up to date when problem is repaired.

Wheeldog · Jun 13, 2001

Ron,

Sorry to hear that the problem remains. I did some mowing last night - 2 hours straight in my neighbor's overgrown yard, and no sign of this problem on my B2410. The outdoor temperature was probably 75-80 F, so I don't know if this was enough of a test.

Good luck with your dealer and Kubota.

Rob