416 hydro shucked out?
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=202893
Printed Date: 19 Nov 2024 at 11:21am
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Topic: 416 hydro shucked out?
Posted By: 55allis
Subject: 416 hydro shucked out?
Date Posted: 27 Aug 2024 at 12:02am
So I think I shucked the hydro pump after seeing this… Not sure how and why but I’m wondering if it could be because I changed the oil to John Deere low velocity hydro oil. I also hat that apart to replace the O-rings in the control shaft. It drove around for 10-15 minutes and than the hydro lever locked up and it wouldn’t move after that.  I think it’s possible to fix if I can find different plungers and the big funny washer in the second picture, also confirm what caused this to happen…. ------------- 1955 AC WD45 diesel with D262 repower, 1949 AC WD45 |
Replies:
Posted By: DrAllis
Date Posted: 28 Aug 2024 at 3:31pm
| It is trashed. Get a complete different (used) hydro assembly. I doubt that any internal parts are even available. All oil lines and a cooler if equipped will need to be flushed clean. Sure looks like an oil related failure to me, but I'm not there looking at it and don't know how deep you were into it before it ate its pigs. |
Posted By: Steve in NJ
Date Posted: 30 Aug 2024 at 9:50am
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I'm wit' the Doc on that one! Get yourself another Hydro or parts Tractor to snag the Hydro out of. I would say she's whooped! See what happens when you mix Green with Orange? You get chit'....  Steve@B&B ------------- 39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife |
Posted By: 55allis
Date Posted: 30 Aug 2024 at 12:13pm
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Boy, I guess that makes a difference, funny thing is the drive part is just fine…. I think it’s supposed to have red atf oil type 3 but please don’t be afraid to correct me. I’ve had enough mistakes already.   ------------- 1955 AC WD45 diesel with D262 repower, 1949 AC WD45 |
Posted By: mwells
Date Posted: 30 Oct 2024 at 6:06pm
| It looks to me like something came apart and tore it up especially if it was just fine when you just had it apart to replace those orings. How much play is there in the slipper and the piston? It's very possible one of those broke and took out the rest of the hydro. Nice thing is these are self contained units so it's easy to clean them up. Flush the cooler/hoses and resivor and go again. It's very fixable if you can find the parts. Did you have the housing bored and bushings installed on the swash plate shaft when you replaced the orings? This should be done if you haven't already as it will just leak again shortly after as the housing is egg shaped and most likely has a groove worn in it. |