1973Auto 80 #1 Posted October 26, 2021 Hello all: Attached is a pic of a seal that is leaking on the axel of my 1973 12 HP Auto. I am wondering how hard of a job it is to replace this seal? Do i have to open up the housing? I have never done any trany work and I really don't want too. Can this be fixed from the outside.? Please excuse my ignorance in this area. 1 Share this post Link to post Share on other sites
ebinmaine 67,671 #2 Posted October 26, 2021 8 minutes ago, 1973Auto said: Please excuse my ignorance in this area. No worries. Please keep asking questions. 9 minutes ago, 1973Auto said: I am wondering how hard of a job it is to replace this seal Really not too bad IIFF the hub is free. On the plus side the hub is likely less difficult to remove because the seal is leaking. Do NOT use a 3 jaw puller to remove the hub. There are threads showing good usable pullers. An old hub is actually a great one. It can be replaced from the outside. 3 Share this post Link to post Share on other sites
ebinmaine 67,671 #3 Posted October 26, 2021 Here's a link to a thread with several good hub puller ideas. 2 Share this post Link to post Share on other sites
pfrederi 17,741 #4 Posted October 26, 2021 Seal is WH# 6449 SKF# 11124 2 Share this post Link to post Share on other sites
1973Auto 80 #5 Posted October 26, 2021 Thank you! I have actually had to replace this hub before, in 6/2020. The woodruff key actually the hub was replaced a few years prior. If I am looking at the parts manual correctly I need part 4-20, but that is not called out on the list.🤦♂️. So what part number am I looking for. Share this post Link to post Share on other sites
1973Auto 80 #6 Posted October 26, 2021 2 minutes ago, pfrederi said: Seal is WH# 6449 SKF# 11124 Thank you. This was posted while I was typing!!👍👍👍👍 3 Share this post Link to post Share on other sites
1973Auto 80 #7 Posted October 26, 2021 Ok, next question, after the hub is off, how do I remove the old seal and replace with the new one Share this post Link to post Share on other sites
Achto 27,609 #8 Posted October 26, 2021 5 minutes ago, 1973Auto said: after the hub is off, how do I remove the old seal and replace with the new one Use a small screw driver and a hammer to work the old seal out. Be patient and take care not to put a gouge in the axle or housing. I use a piece of PVC pipe slide over the axle to tap the new seal in. 3 1 Share this post Link to post Share on other sites
pfrederi 17,741 #9 Posted October 26, 2021 Plastic seal stab it with an icepick and pry it out. You can try that on a metal seal by going into the rubber lip but I usually drill a small hole in the metal part then pry it out. Sand off any burrs rough spots on the axle. Then cover the keyway with electrical tape. Grease the seal lip and slid it on. You can tap it in place pushing the hub in on the axle... 3 Share this post Link to post Share on other sites
1973Auto 80 #10 Posted October 26, 2021 Super!!!!! Thanks guys!!. I already found the seal on amazon and ebay. $10. 2 Share this post Link to post Share on other sites
Achto 27,609 #11 Posted October 26, 2021 I've had luck taking the SKF number to my local Napa. Usually have my part next day. Share this post Link to post Share on other sites
pfrederi 17,741 #12 Posted October 26, 2021 If your seal is an original one the new one will be thinner. Don't worry it will still work. Modern seals are thinner. Share this post Link to post Share on other sites
Maxwell-8 4,277 #13 Posted October 26, 2021 Be carfull not damaging the bearing when picking the seal out..... sorry for my "bearing-complex" 1 1 Share this post Link to post Share on other sites
Snoopy11 5,714 #14 Posted October 26, 2021 1 hour ago, 1973Auto said: Hello all: Attached is a pic of a seal that is leaking on the axel of my 1973 12 HP Auto. I am wondering how hard of a job it is to replace this seal? Do i have to open up the housing? I have never done any trany work and I really don't want too. Can this be fixed from the outside.? Please excuse my ignorance in this area. Buddy, you sound like... If you took the hub off, and used a razor blade to pry the old seal out... you can take your computer and... it... You can always take a small ballpeen hammer and tap on it while pulling with you hands to get it off as well... But... I am pretty... uh... 💪 ...so... yeah... it isn't too hard for me... Don Share this post Link to post Share on other sites
Snoopy11 5,714 #15 Posted October 26, 2021 56 minutes ago, Achto said: PVC pipe slide over the axle to tap the new seal in Don Share this post Link to post Share on other sites
Snoopy11 5,714 #16 Posted October 26, 2021 Did anyone mention to make sure the axle is clean before putting the new seal on? Shop rags come in handy there... Don 1 Share this post Link to post Share on other sites
JoeM 7,874 #17 Posted October 26, 2021 Not sure if someone said this but when you clean up the seal area take a good look to make sure there is no scarring. With the new thinner seals now you can tap them in a little deeper to get on a better area of the shaft. I did have one problem child seal installation and ended up using two thin seals. The two new ones are the same thickness as one old one. I packed grease in between the two seals for lubrication . 2 Share this post Link to post Share on other sites
Snoopy11 5,714 #18 Posted October 26, 2021 1 hour ago, JoeM said: Not sure if someone said this but when you clean up the seal area take a good look to make sure there is no scarring. With the new thinner seals now you can tap them in a little deeper to get on a better area of the shaft. I did have one problem child seal installation and ended up using two thin seals. The two new ones are the same thickness as one old one. I packed grease in between the two seals for lubrication . Good idea... I might try that one! Don Share this post Link to post Share on other sites
Maxwell-8 4,277 #19 Posted October 27, 2021 My seals came from TORO and had the same thickness... Maybe they have NOS? Share this post Link to post Share on other sites
