Hydraulic pump

[CathyCase]

Hi: Still dealing with my hydraulic pump d25569. I took it apart and the shaft has two grooves in it. I took it to the machine shop and he said try and polish it with crocus cloth which I did, it now looks better than the attached photo, but the new seal rides in the lower groove. I think it will leak. I order a ne d25569 replacement pump, it is 1/2 inch too long, and is too wide, to get the right hose (facing crawler) in the hose would have to be bent less than 90 degrees and almost kicks the hose. I tried to get a new shaft for the old one, found a company that advertised they had them but when I called they didn't have them Part number d26061. The new shaft would be my preference. I know someone must have a pump or a shaft. The trick is finding that person. Any help would be appreciated. I have rebuilt the cylinders, got all new hoses, and this pump issue is a bummer. I hope I can find a fix. If needed I can make the d25569 replacement pump fit, but it wouldn't look good, and wouldn't be correct. Thanks

 

[Brokengun]

Have you tried these guys https://www.colemanequip.com/parts/model/Case-420C-Crawler-Tractor-Parts/No-Description-vg/D25569-HYDRAULIC-PUMP-0gy5

They show a shaft for $242.48

Is your new pump an after market replacement?

If this doesnt help keep commenting I or someone will keep looking

 

[chuck machinist]

If you can take it apart and post a picture of the entire shaft, perhaps I may be able to assist you. CM

 

[CathyCase]

Hi Chuck. I will get that tonight for you.

 

[CathyCase]

Hi: I did contact Coleman, they said they don't have the pump shaft and they need to update their web page. Grrr, I was excited when I first saw their add.

 

[CathyCase]

5.1 inch long
1 inch diameter spline side
0.750 woodruff key side
spline length 1.375

Hope this helps

 

[ArleninOr]

Any possibility of using a speedi sleeve on the shaft where the seal rides? Thinking outside my box again I know.

 

[Lpakiz Larry]

Go to a seal and bearing place and get the next undersize seal, with the same OD to fit the bore of the case. There are several different styles of seal, so have the old seal with you.
Then have a machine shop clean up the shaft to the correct size to fit your new seal.

 

[CathyCase]

Hi: We don?t have a seal and bearing place in town, the 1machine shop we have said he won?t mess with it. He told me to use crocus cloth. Know anywhere I could send it? I live in a very rural and remote area.

 

[CathyCase]

I will see if my brother can ind some shop ner his home in Paso robles

 

[Doc Larry]

Your machinist isn't much of one if he can't or wont clean up that shaft for you. Anyone with a lathe can do that for you if you take the shaft out. Maybe you'll have to mail it to someone. Then fit a slightly undersized seal. Almost any town of reasonable size will have a bearing and seal shop and can order virtually any seal. The sleeve is another option. By the way, the shaft as show in the picture is much too rough for a seal to last....

 

[ss55]

A Speedi-Sleeve would be my choice to repair those wear grooves. They cost about $25 and up but save a lot of time. The sleeve should last about as long as the original shaft did. NAPA Auto carries common sizes in stock, or buy them online, they are easy to mail. The installation tool that comes with one will be too short to go all the way down that shaft, you will need to use a pipe or block to push the repair sleeve to the right location.

http://www.skf.com/caribbean/products/seals/industrial-seals/power-transmission-seals/wear-sleeves/skf-speedi-sleeve/index.html

 

[ss55]

http://www.skf.com/binary/98-128020/11337_2-EN-SKF-Speedi-Sleeve.pdf

 

[CathyCase]

thanks for the info. The shop is actually a very good shop, he did my engine for my 1950 Dodge pickup. He is a one man shop and just won't do the small jobs anymore. We had a retired machinist that had equipment in his garage, but he doesn't do any work. Nearest next machine shop is 2.5 hours to 4.5 hours. Mine is a very small town. Anyway, my brother is looking around his home town for someone to do the shaft. Lots of online seal shops I have used for other things. I would prefer a new or old shaft in good shape as opposed to cleaning this one, or the sleeve idea. The machinist here locally said that was an option, but he didn't favor that idea (wish he would just clean mine up, but he won't-can't imagine it would take very long). Thanks again

 

[CathyCase]

Thanks, that will be the route I go If we can't find another option

 

[CathyCase]

I have found a couple companies online that rebuild hydraulic pumps, including shaft repairs, and complete shaft manufacturing for obsolete parts (I'll bet that is expensive). I am going to call some today and see what they say. I still hope to find an old rebuilt pump, old pump, or shaft, I am sure one is out there somewhere, but if not I will go with rebuilding the shaft. I have done the sleeve thing before on another project, and it will be my last option. Anyway, still plugging a way at a solution. I appreciate everyone's input

 

[CathyCase]

I talked to three hydraulic pump repair companies. All of them said they will grind the shaft, chrome it, then grind it to specs. $125-150. Sounds like it should work, has anybody done a similar repair?

 

[kevinthefixer]

(quoted from post at 09:09:22 05/03/18) I talked to three hydraulic pump repair companies. All of them said they will grind the shaft, chrome it, then grind it to specs. $125-150. Sounds like it should work, has anybody done a similar repair?

e used to do that with crankshafts for 1/4-mile race cars. Works very well. Understandably, it costs a lot more for a crank, but if you don't have large bucks you can't race competitively. Looks like you're in!

 

[CathyCase]

Thanks for letting me know it works well. I was a bit nervous since I didn,t know. It will be so fun to get the pump all back together and working
well