| Author | Message | ||
| james dean boggs (Jd_boggs)
Registered Member Username: Jd_boggs Post Number: 140 Registered: 11-2004 Posted From: 66.233.34.38 Rating: N/A |
I have grease spilling out the vent holes of the brake drum and would like to fix it before I start for home in southern California. I had this problem last year and thought I fixed it but on inspection today it didn't hold. Last year I replaced both inner and outer rubber seals and a metal fitting that seals the outer axle housing. Have a question: Is it possible to OVER fill the differential? I can't imagine the seal failing already.. This is the link for pics from last year's repair.. http://www.promarc.com/hobbies/brake/index.htm | ||
| larry currier (Larryc)
Registered Member Username: Larryc Post Number: 241 Registered: 2-2007 Posted From: 64.12.116.203 Rating: N/A |
JD, If the fill plug is on the side then I don't think you can over fill it. The brake shoes are wet, so it is the inner seal. I have great luck with Stemco Grit Guard Seals and use the kit with a wear sleve inclosed. Zero failure rate. Make sure your vent tube is not plugged, otherwise not much else involved. Not everyone will agree, but I just clean up the greasy shoes and run them. Never had as problem. | ||
| Tony Gojenola (Akbusnut)
Registered Member Username: Akbusnut Post Number: 44 Registered: 11-2006 Posted From: 208.98.151.220 Rating: N/A |
I'm a little confused. If your hubs are spilling grease, they are grease-packed, which is evident by the presence of an outer seal. If this is the case, the leakage could only be caused by a defective inner seal, incorrect seal or installation, or possibly the wrong grease used. However, if the the leakage is in fact differential oil, the problem lies with the outer seal, which prevents oil from entering the hub. If the hub is oiled as opposed to grease-packed, there should be no outer seal present. I suspect in either event, the wrong seals may have been used previously. Oil seals and Grease seals are not the same. tg | ||
| john w. roan (Chessie4905)
Registered Member Username: Chessie4905 Post Number: 1542 Registered: 10-2003 Posted From: 71.58.110.9  Rating: N/A |
Sometimes, some people not experienced with the greased packed bearings in the hubs hub with oil in axle tubes and differential, can accidentally install those axle seal plates with the small seal on them that go between the axle shaft and wheel hub backwards, causing major distortion of the plate/seal and major mess of oil mixed with hub grease. Another problem can be noticeable wear on the underside area of the bare axle housing tubes where the inner bearing race or part the rollers are riding on in that cage. This causes incorrect axle bearing adjustment and constant seal leaking problems, since that hub will always move up and down over every little bump, making it nearly impossible to allow the seal to do it's job. Only way to fix it properly with this condition is to have one of those companies come and remove axle stub and install and weld new stub in place. You most likely don't have this problem, but check for it while you have hub and drum off. If you reuse the shoes because they are very new with full lining, make sure you get all the grease out of the rivet holes. Brake clean works well and lacquer thinner works good too. Away from any combustible items, you can heat the shoe surface with a propane torch several times to help sweat the grease out of the pores. Don't try to burn it out though. Otherwise, change the shoes and clean up the mess completely, and what a mess it will be! | ||
| macgyver (91flyer)
Registered Member Username: 91flyer Post Number: 442 Registered: 11-2004 Posted From: 74.193.225.243  Rating: N/A |
I had a similar problem on the bookmobile I have when I changed out all the seals.... Turns out that when I installed the inner seal, it folded slightly in one almost imperceptible spot for some reason... The seal was defective. I replaced it. The shoes were brand new and hadn't been driven even 20 miles yet before it started leaking diffy oil.... I used the method described by John... Just on a different level. I used brake clean first, got the major stuff out... Then dipped the shoes in carb cleaner (the big can o' crap) for about 5 minutes and let them dry... Then sprayed them with brake clean again and used a good stream of air from my compressor to dry them out and get everything out of the nooks/crannies... If there was still any grease/oil present on the blowout, I'd repeat... Had to do it twice to the bottom shoe where the grease and oil settled... The top shoe came out clean on the first try. Good as new and had no problems with the shoes afterwards... Cleaning the hub was a little easier... A good wipedown, brake clean and another wipe. Done. If you decide to use heat... Be careful not to scorch or burn the shoes... They'll start to fall apart under load. Had that happen once too. Just not on a bus... -Mac | ||
| Glenn Williams (Glenn)
Registered Member Username: Glenn Post Number: 224 Registered: 6-2006 Posted From: 216.163.56.194  Rating: N/A |
I had a similar problem. Put in new seals, did it right, and they leaked again. Turned out that my breather vent on the top of the axle housing was toast. That will cause too much pressure to build up inside the axle housing and it will force out the oil/grease. Be sure to check it. Good Luck! Glenn | ||
| james dean boggs (Jd_boggs)
Registered Member Username: Jd_boggs Post Number: 141 Registered: 11-2004 Posted From: 74.61.242.20 Rating: N/A |
Have more information. Went to Linder Truck repair in Tulare CA. And spoke with the shop manager. Dropped off both the shoes, hub and brake drum. Brake shoes were again soaked along with drum etc. In short a repeat failure of last year's debacle. They're going to ship new seals from Los Angeles and should get them by 1PM tomorrow. Upon further inspection I found that the outer seal had failed because of sharp burrs on the spindle that comes in contact with the outer seal. The shop manager told me that the seal part numbers did not match the axle model number. Bottom line: the spindle has damage on its surface and and they gave me the wrong seals last year. Will confirm it tomorrow. | ||
| james dean boggs (Jd_boggs)
Registered Member Username: Jd_boggs Post Number: 142 Registered: 11-2004 Posted From: 66.233.34.38 Rating: N/A |
Got new seals with matching sleeves, installed them will be back on the road tomorrow. I checked the breather vent last year. It was fine. I'm confident that it will hold just fine but will not really know until I get home. Thanks to everyone for your help. Thankfully my nephew lives here and was able to do the heavy lifting for me. | ||
| David Evans (Dmd)
Registered Member Username: Dmd Post Number: 339 Registered: 10-2004 Posted From: 173.68.141.145  Rating: N/A |
did they do the rite thing for you? just wondering how that worked out since they did the work. Nephews can be a good thing. Good luck. | ||
| james dean boggs (Jd_boggs)
Registered Member Username: Jd_boggs Post Number: 143 Registered: 11-2004 Posted From: 71.121.48.229 Rating: N/A |
David, This is a different shop altogether. This shop was thorough and professional. The other was just a truck parts place in Indio CA. |