Oh no... WD45 hydraulic pump making some bad noise
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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=9746
Printed Date: 21 Jan 2025 at 10:27pm
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Topic: Oh no... WD45 hydraulic pump making some bad noise
Posted By: Glockhead SWMI
Subject: Oh no... WD45 hydraulic pump making some bad noise
Date Posted: 20 Mar 2010 at 10:22am
| I jumped on the WD last night to grade the driveway. When I lifted the blade the pump was making some horrible noises. I have a big list of things to fix on this unit. Are the pumps servicable or would it be better to start looking for a suitable replacement? |
Replies:
Posted By: CTuckerNWIL
Date Posted: 20 Mar 2010 at 10:30am
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The pumps can be rebuilt. There are o-rings and check valves consisting of a seat, ball and spring. Not much else to fix. My bypass spool broke a few years ago and I had to replace it(part from AGCO). Maybe your bypass spool is hanging up and not unloading. Could be just needs a cleaning.
------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: Glockhead SWMI
Date Posted: 20 Mar 2010 at 10:53am
| Hmmm.... this thing did have some of the nastiest fluids in it I have ever saw. It sounds really bad. |
Posted By: Max(ia)
Date Posted: 20 Mar 2010 at 12:54pm
| Just a thought, did you return the hyd. lever to neutral after you lifted the blade, if not could be the pump running. |
Posted By: LouSWPA
Date Posted: 20 Mar 2010 at 1:21pm
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Jesse,
I've had two of them (WD/WD-45) where the noise was the result of a worn/broken cam follower(s) that also chewed up the cam shaft! If that is your problem, and the cam shaft is not too bad it's easy to fix. If the cam shaft is beyond use it's a big problem.
But, the noise can be lots of other things, too
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Posted By: gary ny
Date Posted: 20 Mar 2010 at 1:36pm
| Lou is right the cam followers brake and they will make a real bad noise ,easy fix though |
Posted By: Duey (IA)
Date Posted: 20 Mar 2010 at 3:34pm
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I have a blow up of the parts and some tips on the pump on my web site.
http://dueyschutter.freeservers.com/photo3.html%20 - http://dueyschutter.freeservers.com/photo3.html |
Posted By: Glockhead SWMI
Date Posted: 20 Mar 2010 at 10:00pm
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How would the engine make noise only when I have an implement attached and the hydraulics in the up position? Not sure I understand what you are talking about.
I have the new engine on the stand almost ready to get rebuilt. That should take care of any problems there.
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Posted By: LouSWPA
Date Posted: 20 Mar 2010 at 10:10pm
The hydraulic pump is four pistons, actuated by cam followers which are actuated by a cam shaft that runs from the engine clutch to the transmission. That's the cams and followers I am talking about. Not the the engine cam.
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Glockhead SWMI wrote:Posted By: NICKMI
Date Posted: 20 Mar 2010 at 10:51pm
| ive got a good pump on a junker wd out back if your interested |
Posted By: Glockhead SWMI
Date Posted: 21 Mar 2010 at 9:11am
| Lou, OK. I thought ya lost your marbles for a minute. I forgot about the cam followers in the pump. I heard cam and thought of the engine. |
Posted By: LouSWPA
Date Posted: 22 Mar 2010 at 12:10am
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Posted By: John Ontario
Date Posted: 22 Mar 2010 at 7:00pm
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Is there somewhere that you can buy a kit to rebuild the pump? The pump on my 45 leaks in the raised position. Schematics would be great as well.
Thanks John
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Posted By: Chuck(ONT)
Date Posted: 22 Mar 2010 at 7:04pm
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http://dueyschutter.freeservers.com/photo3.html - http://dueyschutter.freeservers.com/photo3.html scroll down for a schematic. Agco still carries a kit, around 100.00. |