Hydraulic Issue
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=150668
Printed Date: 03 Sep 2025 at 8:49am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Hydraulic Issue
Posted By: Allis Wd45
Subject: Hydraulic Issue
Date Posted: 21 May 2018 at 3:35pm
| My Wd45 is leaking hydraulic oil internally. I can fill the hydraulics up and not even use them and a couple days later it’s low again. I’m thinking it’s leaking into the transmission because after this happens the transmission is over full. I’m wondering if I can use it like this as long as the tranny isn’t over full since I don’t use the hydraulics. What could be the issue and how hard of a fix is it? |
Replies:
Posted By: SteveM C/IL
Date Posted: 21 May 2018 at 3:43pm
| The thing is...the hyd has to run in oil or will destroy cam and followers for pump. |
Posted By: DrAllis
Date Posted: 21 May 2018 at 3:44pm
| I believe I'd keep filling the hydraulic compartment and the problem may eventually cure itself when the oil levels are the same. Don't think it will hurt anything. The fix is remove the torque housing from the tractor and reseal the clutch shaft. |
Posted By: Stan IL&TN
Date Posted: 21 May 2018 at 3:56pm
|
And if you use hy-tran fluid in all compartments then everyone is happy. ------------- 1957 WD45 dad's first AC 1968 one-seventy 1956 F40 Ferguson |
Posted By: B26240
Date Posted: 21 May 2018 at 4:13pm
| I'm with Stan and Doc, matter of fact I have a WD that is filled to one level and it does just fine. Useing universal tractor fluid. |
Posted By: Allis Wd45
Date Posted: 21 May 2018 at 5:39pm
| I’ve been using tractor tranny in the hydraulics so I’ll just keep using that and keep an eye on the transmission fluid level. Thanks all |
Posted By: MACK
Date Posted: 21 May 2018 at 9:21pm
| May have axel seals leaking next. MACK |
Posted By: Allis Wd45
Date Posted: 21 May 2018 at 9:39pm
| Mack do you mean hydraulic fluid leaking in the axle fluid? |
Posted By: Lonn
Date Posted: 21 May 2018 at 10:31pm
|
I think he means the pinion seals leaking rear end oil out next to brake drums. You would see the oil coming out the bottom of the brake housing. Seals are probably already worn out but go unnoticed because heavy oil (80-90 weight) will leak slowly vs the lighter hydraulic oil which you would probably notice immediately. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: Brian F(IL)
Date Posted: 22 May 2018 at 7:49am
That's what I'm experiencing. I'm using it as is for now. Someday, it'll get torn down, re-do the brakes, re-do the axle seals, probably even split it to fix the seals between the hydraulics and tranny. It's been this way for at least 10 years so I guess I'm not doing any more damage to it.
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MACK wrote:Posted By: Allis dave
Date Posted: 22 May 2018 at 9:39am
| I replace the clutch shaft seals on my 45 a couple years ago. It not terribly difficult but is labor intensive. |