Dana 25 inner seal question |
Post Reply |
Author | |
Apdodge69
Member Joined: 28 Sep. 2016 Location: Turlock Status: Offline Points: 26 |
Post Options
Thanks(0)
Posted: 24 July 2021 at 3:51pm |
I have a early 46’ 2a, having a leak into the brakes from the housing. I do not see a place for an oil seal in the housing, I have a bushing where the seal goes and it is the bendix style axle shaft. Any help with a diagram or explanation would be great
|
|
Mark W.
Member Sponsor Member Joined: 09 Nov. 2014 Location: Silverton, OR Status: Offline Points: 7975 |
Post Options
Thanks(0)
|
The seals are just outside the Pumpkin in a DANA 25 Not sure how gear oil from the center section could get to the Brakes. Do you have gear oil in your knuckles? You also need to download a copy of the Service manual Edited by Mark W. - 24 July 2021 at 5:05pm |
|
Chug A Lug
1948 2A Body Customized 1949 3A W/S 1957 CJ5 Frame Modified Late 50's 134L 9.25"clutch T90A D18 (1.25") D44/30 flanged E-Locker D25 5.38 Since 1962 |
|
Apdodge69
Member Joined: 28 Sep. 2016 Location: Turlock Status: Offline Points: 26 |
Post Options
Thanks(0)
|
Yes, running oil in the knuckles, looked at the diagram and see it calls for a seal on the back of the knuckle where a bushing is located but not enough room for a seal.
And the surface behind the axle splines won’t fit the ID of the seal, but the inner on the seal fits where I believe the seal would go on the outside of the inner axle. I’m a bit confused
|
|
BD1
Member Joined: 18 Dec. 2019 Location: Maine Status: Offline Points: 629 |
Post Options
Thanks(0)
|
The inner seals in the Dana 25 are all the way in the axle tubes just outboard of the differential bearings. If you have oil getting to your brake drums it is far more likely to be coming from whatever is in the closed knuckles
|
|
BD
'47 CJ2a, Shiny on top! '55 CJ5 project |
|
Oldpappy
Member Joined: 09 Apr. 2018 Location: Tennessee Status: Offline Points: 4899 |
Post Options
Thanks(0)
|
"Yes, running oil in the knuckles"
The only seal on the knuckles is the seal on the back of the knuckles that rides on the ball. There is a seal on the inside of the hubs for the wheel bearings. As already said the oil getting onto your brakes is probably due to what is in the knuckles. Running oil in there will not only cause problems with your brakes it will also cause it to leak past the seals on the knuckles. The oil in the knuckles would fill the hubs and leak past the wheel bearing seals in the hub to get onto your brakes. First step is to repack your wheel bearings, and replace those seals. Then go to the Novak site, they have a good recipe for "knuckle pudding" which is a mixture of 140wt gear oil and chassis grease. It is what I have used for many years. If mixed to proper consistency it will be thick enough not to bleed out through the spindles, and thin enough to leak just enough through the felt seals on the knuckles to keep the knuckle balls wet without forming a dripping leak. There is a guy out there who goes by "Metalshaper" who sells a product specifically made for knuckle lubrication. I haven't tried it, but it is probably a very good product because he knows what he is doing. I don't want to restart an old argument but I advise that you do not listen to the folks who will tell you to use "Cornhead" grease. It is not appropriate for steering knuckles especially with the Bendix axle joints you have. Edited by Oldpappy - 27 July 2021 at 11:51am |
|
If you can't get there in a Jeep you don't need to be there!
|
|
JonJ
Member Joined: 18 Apr. 2020 Location: Essex, UK Status: Offline Points: 316 |
Post Options
Thanks(0)
|
Hi all
While we are on the subject of Dana 25 I dont suppose anyone has a picture of what the front differential looks like with the cover removed. I want to get the right gasket and no one seems to go around the join with the same width and others have 2 notches taken out off centre to the left. Would like to get the gasket and do it all at once. Thanks! Here’s the outside Edited by JonJ - 28 July 2021 at 11:35am |
|
Stev
Member Sponsor Member Joined: 27 July 2016 Location: Cincinnati Status: Offline Points: 2384 |
Post Options
Thanks(0)
|
If the cover is straight, clean the surface with brake cleaner and use RTV to make the gasket - the no leak solution.
|
|
Stev
1946 CJ2A Trail Jeep (The Saint), 1948 CJ2A Lefty Restored |
|
JonJ
Member Joined: 18 Apr. 2020 Location: Essex, UK Status: Offline Points: 316 |
Post Options
Thanks(0)
|
Ok I have permatex gear oil RTV so will use that! Thanks
|
|
Post Reply | |
Tweet |
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |