rlubikey Posted August 15, 2016 Report Share Posted August 15, 2016 I've just greased my rear hubs on the Spit and discovered that one has a little (~1mm) hole on the top where the excess grease exits. You wipe off the excess and what's left sits in the hole until next time you grease. The other hub doesn't have this hole so the grease exits through the weakest seal. Just my luck it was the outer one next to the brakes, so I'm going to have to change the seal - which has probably been assembled the wrong way round. So here's the question - this hole; was it something Triumph did on only a few hubs? One period of production maybe? Or is the hub "sans hole" a repro. part? What do you guys think? I'm guessing that the hole defines the route for the grease through the hub, i.e. from nipple, through bearing, out of hole. So I'm thinking of drilling one when I rebuild the hub. Madness or ... ? Cheers, Richard Link to comment Share on other sites More sharing options...
68vitesse Posted August 15, 2016 Report Share Posted August 15, 2016 I always understood that you pumped grease in till it exited from the inner seal, this is to ensure fresh grease flows through the bearings. Both inner and outer seal lips point towards the diff. Just had a look at a spare assembly the only hole, apart for the ones for the brakes, is behind the grease catcher. When I rebuilt this earlier this year the inner grease seal was forced out of the trunnion when I greased it. The parts came from one of the usual suppliers, a replacement seal works fine, the only difference I could see was that the faulty one was unmarked and the replacement had a part number etc. on it. Regards Paul Link to comment Share on other sites More sharing options...
Pete Lewis Posted August 15, 2016 Report Share Posted August 15, 2016 wouldnt a new hole equal water ingress . the hole in the hsg and the catcher on the back plate is there to keep leaking grease from contaminating the brakes not a a means of is it filled or not , if the outer seal is sound then none should leave via the back plate , any grease should exit via the inboard seal behind the dust thrower cup as paul says they should be fitted to allow grease out but not water In. Link to comment Share on other sites More sharing options...
Ben Caswell Posted August 15, 2016 Report Share Posted August 15, 2016 Richard did you get round to painting the Atlas in GWR colours Link to comment Share on other sites More sharing options...
rlubikey Posted August 15, 2016 Author Report Share Posted August 15, 2016 Thanks for your comments guys. Paul, yes, it seems the outer seal has given way first. At least the grease catcher did its job. Pete, I didn't mention that, sitting on top of the pile of grease on the hub with the hole was a tiny "pin" of stiffer grease. Presumably this is what was sitting in the hole and was ejected first. I found mention of the hole on http://www.britishcarforum.com/bcf/showthread.php?35140-Spitfire-rear-suspension-question though some said they had them and some not. I assumed at the time the "have nots" were either unobservant or theirs were blocked with age-old grease. Seems that was a wrong assumption. I was going to take the wheel off and get a picture this evening but ran out of time. Ben, the Atlas has had all the bodywork done now and is (still) in primer. Yes, it's going to be Russet Brown and (Rover Metro) Primula Yellow - a very good facsimile of GWR Chocolate & Cream. Cheers, Richard Link to comment Share on other sites More sharing options...
Pete Lewis Posted August 16, 2016 Report Share Posted August 16, 2016 I would bet that extra hole in the top of the trunion block has been added at some time in its previous life, and without some protection will end up with road water getting in. you don't want any breather or escape route as the flow when pumped in is supposed to ooze out the inner seal showing the needle rollers have received some renewed grease. so my view is where ever its come from .............. plug it up Pete Link to comment Share on other sites More sharing options...
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