Pattey21 Posted February 9, 2023 Share Posted February 9, 2023 Good afternoon, I've got a leak out of one of the half-shafts and need to replace the seal. I've searched for a guide/another thread, nut can't seem to find one (happy to be corrected) What is the method for removing/reinstalling the half shaft after replacing the seal. Cheers Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/ Share on other sites More sharing options...
Duncan Posted February 9, 2023 Share Posted February 9, 2023 Pry out (without damaging seal), there is a circlip in the diff that locates it. Push back in Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7975684 Share on other sites More sharing options...
joshuaho96 Posted February 9, 2023 Share Posted February 9, 2023 4 hours ago, Pattey21 said: Good afternoon, I've got a leak out of one of the half-shafts and need to replace the seal. I've searched for a guide/another thread, nut can't seem to find one (happy to be corrected) What is the method for removing/reinstalling the half shaft after replacing the seal. Cheers When I had to do this for the front diff I removed the diff cover and spun the diff until I could see the axle inside the diff. Then I used a plastic pry tool with a simple flat edge that gradually widens to full width and a hammer. Jam the pry tool in and use a hammer until the axle pops out. As far as I can tell it did not mar or bend any other parts of the diff this way. My least favorite thing is scraping/prying something out with metal on metal so this was a foolproof technique for me and the car needed a diff oil change pretty badly anyways. Then I used a slide hammer with an expanding jaw puller to remove the seal itself. Be careful when you do this because it will suck to damage the seat of the seal. I expanded it into the rubber to keep it from marring the seat instead of trying to catch the back edge where it meets the seat. Another method I've seen since doing that job was a tool that hooks onto the outside of the axle and makes it possible to slide hammer the axle out instead of trying to use a pry bar. Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7975687 Share on other sites More sharing options...
GTSBoy Posted February 9, 2023 Share Posted February 9, 2023 1 hour ago, joshuaho96 said: Another method I've seen since doing that job was a tool that hooks onto the outside of the axle and makes it possible to slide hammer the axle out instead of trying to use a pry bar. Yuh, a bit of flat bar with 3 holes in it. Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7975690 Share on other sites More sharing options...
Pattey21 Posted February 9, 2023 Author Share Posted February 9, 2023 Okay great, thanks a lot Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7975694 Share on other sites More sharing options...
Pattey21 Posted February 28, 2023 Author Share Posted February 28, 2023 So I was blaze' with using the seal puller. I can feel the marks, what can I do so it doesn't leak ie silicone at that point? Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7976267 Share on other sites More sharing options...
Ben C34 Posted February 28, 2023 Share Posted February 28, 2023 Dont stress Debur it and use rtv sealant Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7976269 Share on other sites More sharing options...
Pattey21 Posted February 28, 2023 Author Share Posted February 28, 2023 22 minutes ago, Ben C34 said: Dont stress Debur it and use rtv sealant Just by sanding with fine grit or a special tool? Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7976270 Share on other sites More sharing options...
Duncan Posted February 28, 2023 Share Posted February 28, 2023 yeah just fine grade wet and dry, it should be fine Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7976272 Share on other sites More sharing options...
Pattey21 Posted February 28, 2023 Author Share Posted February 28, 2023 6 minutes ago, Duncan said: yeah just fine grade wet and dry, it should be fine I was thinking 800? Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7976273 Share on other sites More sharing options...
GTSBoy Posted February 28, 2023 Share Posted February 28, 2023 Have you ever felt 800? It will take you a fair while to move any metal with it. Start with 320 or 400. Only rub a little until you feel the peak come down. Then think about maybe going finer. Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7976276 Share on other sites More sharing options...
Pattey21 Posted March 1, 2023 Author Share Posted March 1, 2023 Just taking the edges off it Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7976293 Share on other sites More sharing options...
Pattey21 Posted March 1, 2023 Author Share Posted March 1, 2023 Put oil around the outer edge besides the score where I used permatex black. Time will tell but went back together alright/oil filled Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7976303 Share on other sites More sharing options...
Pattey21 Posted March 15, 2023 Author Share Posted March 15, 2023 So i refilled it and layed it on its side for a day (new seal side down) no leak, went for a drive today and its weeping. Is it possible to be weeping from the half shaft seal, do the take time to bed in? The seal cam pre-greased in the centre and i lubricated the shaft prior to install. Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7976747 Share on other sites More sharing options...
MBS206 Posted March 15, 2023 Share Posted March 15, 2023 What did the mating surface on the half shaft look like? Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7976750 Share on other sites More sharing options...
Pattey21 Posted March 15, 2023 Author Share Posted March 15, 2023 I didn't inspect it thoroughly but my impression when cleaning it prior to lubrication, was the it was "serviceable" but my focus was more on the seal itself. Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7976762 Share on other sites More sharing options...
MBS206 Posted March 16, 2023 Share Posted March 16, 2023 7 hours ago, Pattey21 said: I didn't inspect it thoroughly but my impression when cleaning it prior to lubrication, was the it was "serviceable" but my focus was more on the seal itself. Not 100% across this half shaft in particular as I haven't removed one, but it will be pretty much the same as others... The surface the seal rests on on the half shaft itself can also wear. If it starts to wear down, it's not going to mate and seal properly. When doing the seal, you need to be checking the inner and outer surfaces it mates to, are in good condition too. Is the oil weep 100% coming from the half shaft seal location? Have you checked the breathers/vents aren't blocked? Blocked vents will bust an axle seal/make them weep. This could be why it only showed after a drive, as it needed to heat up and pressurise first (diff unable to breath) Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7976781 Share on other sites More sharing options...
Pattey21 Posted March 24, 2023 Author Share Posted March 24, 2023 Hectic few weeks at work. I made sure to clear/check the diff vent but I will check the breather hose. My guess for it being the half shaft seal location is based on filling it prior and lying it on the damaged side overnight and it did not weep. ill have another look underneath/ check the breather hose Link to comment https://www.sau.com.au/forums/topic/484428-removing-half-shaft-from-diff-r33/#findComment-7977245 Share on other sites More sharing options...
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