m2 hydro
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=134119
Printed Date: 25 Aug 2025 at 6:49am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: m2 hydro
Posted By: bradley6874
Subject: m2 hydro
Date Posted: 22 Jan 2017 at 9:25am
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Brothr is looking for sombody to rebuild the hydro fo his m2 got real week as he finished up he dropped it out and was going to take it to Oakley but they dont do them sany more any suggestions who to send it to thanks richard ------------- You can wash the dirt off the body but you can’t wash the farmer out of the heart and soul |
Replies:
Posted By: bradley6874
Date Posted: 23 Jan 2017 at 6:40am
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Bump ------------- You can wash the dirt off the body but you can’t wash the farmer out of the heart and soul |
Posted By: EricPA
Date Posted: 23 Jan 2017 at 7:35am
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Did you try Binkley & Hurst? ------------- Life is tough,but it's tougher when you're stupid. - John Wayne |
Posted By: shameless (ne)
Date Posted: 23 Jan 2017 at 7:50am
| would hydros from other makes fit/work? |
Posted By: bradley6874
Date Posted: 23 Jan 2017 at 8:58am
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Call in to Brinkley now last one I heard they did.cost the man 7000 that's hard to justify for a $3500 combine any body got a used one ------------- You can wash the dirt off the body but you can’t wash the farmer out of the heart and soul |
Posted By: DrAllis
Date Posted: 23 Jan 2017 at 12:11pm
| I sincerely hope the diagnosis was accurate. I have seen quite a few hydro's that were supposed to be going bad/weak, and all that was wrong was the hydro's drive belt wasn't TIGHT. Also, while looking for a used hydro, you'd better know what you're looking for. M-2's from 1977 and 78 were a 4X6 size with their own charge pump built in. 1979 and up were a 6X6 size and charge pump was belt driven by the hydraulic pump under the radiator. A 6X6 with a weak charge pump will make the hydro perform badly, but it isn't the hydro....it's the charge pump. |
Posted By: shameless (ne)
Date Posted: 23 Jan 2017 at 2:04pm
| that's good to know Doc! what would any of us do without you? |
Posted By: bradley6874
Date Posted: 23 Jan 2017 at 2:37pm
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Belts were tight they changed filters and checked pressure was ok early part of season was just week with full bin as season went on got steady weaker they tested and droped it out once he got done beans ------------- You can wash the dirt off the body but you can’t wash the farmer out of the heart and soul |
Posted By: Wade (IA)
Date Posted: 23 Jan 2017 at 4:26pm
| Even a 6x6 should only cost $3-4,000 to rebuild! A gauge on the charge pressure line should tell if the pump is still working. I don't know if there is a way to check bypass/ case drain on the dynapower units? |
Posted By: DrAllis
Date Posted: 23 Jan 2017 at 4:35pm
| Quick test/fix/diagnosis would be try to adjust high pressure up to 5,000 psi (this assumes it is lower than 5,000). If it raises up to that point, you might be fixed. If hydro doesn't respond to adjustment, there's a problem.....probably too much case drain/leakage. This also assumes charge pressure is within specs. |
Posted By: CrestonM
Date Posted: 23 Jan 2017 at 4:51pm
x2! The Doc could easily write several books on this stuff. No doubt he's forgotten more than I will probably ever know.
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shameless (ne) wrote:Posted By: JohnCO
Date Posted: 23 Jan 2017 at 9:54pm
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I don't know Creston, you're a lot younger then most of us with plenty of brain cells left to fill up with useful information, and some unnecessary stuff. Stay away from Shameless and you'll be fine! ------------- "If at first you don't succeed, get a bigger hammer" Allis Express participant |
Posted By: tbran
Date Posted: 23 Jan 2017 at 10:05pm
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most of the 6X6 hydro's suffer from a simple fix. Remove the input shaft via pulling the seal retainer /shaft after removing pulley and inspect the snap ring behind the bearing. This can be done w/o pulling hydro. IF and it will be, the shaft snap ring groove is about 2x the width it should be, then the input shaft has moved out and let the pressure off the rotating group. Simply machine the groove for two snap rings and reinstall the shaft with new seal. Probably fixed 20 of these for less than $200.oo This is for hydros that quit pulling or have trouble taking off but otherwise operate ok in lower gears.
------------- When told "it's not the money,it's the principle", remember, it's always the money.. |
Posted By: MACK
Date Posted: 23 Jan 2017 at 10:40pm
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Before you put hydro back in , clean All lines, cooler,pumps, restive, new filter, or any place that could have foreign material . Had a customer blew RWA hose, local ship made new hose. Grinding from where hose was cut went through system, hydro, and RWA motors. One hi priced hose. Can not be too clean. MACK
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Posted By: bradley6874
Date Posted: 24 Jan 2017 at 6:36am
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Thanks mack will flush everthing out still havent herd of a repiar shop ------------- You can wash the dirt off the body but you can’t wash the farmer out of the heart and soul |
Posted By: rw
Date Posted: 24 Jan 2017 at 7:26pm
| sun source does them for our hydros at work the have more than one shop in the US. google them rw |
Posted By: tbran
Date Posted: 24 Jan 2017 at 8:45pm
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also when installing a new hydro = 6x6 start and run engine before putting the belt on. This will charge unit before spinning rotating group. ------------- When told "it's not the money,it's the principle", remember, it's always the money.. |
Posted By: Adam Stratton
Date Posted: 25 Jan 2017 at 7:18am
| What is the correct pressure for the charge pump? Where do you check the psi for the 5k pressure on the hydro? Ive got one acting up on an early l2 and wasn't looking forward to dealing with it. |
Posted By: bradley6874
Date Posted: 25 Jan 2017 at 2:11pm
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Thanks rw just called nice guys will advise how it goes ------------- You can wash the dirt off the body but you can’t wash the farmer out of the heart and soul |
Posted By: GM Guy
Date Posted: 27 Jan 2017 at 12:53am
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another option is Herrs machine, Washington KS. Also, 6x6 hydros came out in 78 for standard machines, and I think in 77 for rice combines. not sure about the hillsides though. ------------- Gleaner: the properly engineered and built combine. If you need parts for your Gleaner, we are parting out A's through L2's, so we may be able to help. |
Posted By: bradley6874
Date Posted: 30 Jan 2017 at 3:11pm
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Well got word back from Brinkley and Hurst they don't do hydros they send them out go figure ------------- You can wash the dirt off the body but you can’t wash the farmer out of the heart and soul |