Ferrino Posted February 12, 2005 Share Posted February 12, 2005 Bought some alloy front hubs for the rebuild and have now sourced some new wheel bearings (from an online bearing supplier for a good price). What is the best way of inserting the races nice and square into the bores of the hub? Can I do it at home with a vice and an appropriately-sized socket? Do you need to lightly grease the outside of the races (ie. the surface which interacts with the hub) to help them in? How much grease do you need to pack into the 'caged' part of the bearing? Cheers! Lobbying Caterham for a new badge.... Link to comment Share on other sites More sharing options...
Ernie Panks Posted February 12, 2005 Share Posted February 12, 2005 I've always pressed mine in on a 10T press with a suitably sized mandrel, but then again, I'm lucky to have one at my disposal where I work! Not sure of the vice approach, you may not get enough tonnage. Try a local machine shop if they do charge you, I doubt it would be much. As far as grease goes, I pack as much asI sensibly can into my bearings. I've never seen a failure due to overgreasing! visit Carrotland.co.uk Link to comment Share on other sites More sharing options...
wonkey eyed barmaid Posted February 12, 2005 Share Posted February 12, 2005 last time i changed front wheel bearings [albeit on a normal hub] i was able to chap the bearings into place. piece of fairly solid wood 'just the right size' and a rubber hammer. just work your way around and gently tap them down square, avoiding hitting any part too many times and getting it 'wedged'... had no problems since. Link to comment Share on other sites More sharing options...
Rob Walker Posted February 12, 2005 Share Posted February 12, 2005 I put the hubs in the oven 100C for about 20mins and the bearing outer races in the freezer the bearing races then just drop into place. Link to comment Share on other sites More sharing options...
Billyboy Posted February 12, 2005 Share Posted February 12, 2005 I would second Rob here - NO damage can occur this way!! Link to comment Share on other sites More sharing options...
Ferrino Posted February 12, 2005 Author Share Posted February 12, 2005 Oven & freezer trick sounds good to me - cheers! Lobbying Caterham for a new badge.... Link to comment Share on other sites More sharing options...
Joe 90 Posted February 12, 2005 Share Posted February 12, 2005 I've managed it successfully using a large vice. As the jaws are parallel, there's not much danger of wedging. SEP field working, not spotted in 103,100 miles. Some photos on webshots, updated 25 Jan Link to comment Share on other sites More sharing options...
Chelspeed Posted February 13, 2005 Share Posted February 13, 2005 If you're changing them rather than just fitting new ones the old races make perfectly sized (obviously) mandrels for spreading the load from the 14lb sledge or the big FO vice. Link to comment Share on other sites More sharing options...
Paul McKenzie Posted February 13, 2005 Share Posted February 13, 2005 Foreign Office vice Paul Link to comment Share on other sites More sharing options...
MartinS Posted February 26, 2005 Share Posted February 26, 2005 Hi all, I've just tried replacing the bearings on my seven, and I'm a little worried as with one bearing set replaced I had real difficulty getting a split pin in. Comparing with the other wheel, the nut doesn't tighten so far so there is only a very small amount of hole available for the split pin. I believe the races are square and fully in, although my method of inserting them was faily crude (gradual tap in circles using the old race as a mandrel and a bit of wood for protection). Anyway, the split pin is in, but should I be worried about the difference as a hint that something isn't right? Cheers! Martin Link to comment Share on other sites More sharing options...
F355GTS Posted February 26, 2005 Share Posted February 26, 2005 Martin worth taking it off and checking it I think Mark Link to comment Share on other sites More sharing options...
MartinS Posted February 26, 2005 Share Posted February 26, 2005 Checked it, although it's quite hard to see properly I believe the races are seated correctly. Humm, odd.. M. Link to comment Share on other sites More sharing options...
Big Brother Posted February 26, 2005 Share Posted February 26, 2005 Martin, Are there two holes in the stub axle shaft? Most cars have two and they are offset, so if one is not lined up, the other one is Just a thought Steve SE7EN-UP! Incorporating the Caterham Links Database Link to comment Share on other sites More sharing options...
MartinS Posted February 27, 2005 Share Posted February 27, 2005 Ah, school boy error that I made last time, but alas no. This is more just that the hub doesn't seem to sit as far back as it did previously, which results in not a lot of the hole being exposed when I try and put a split pin in. I'll try and do the other set of bearings tomorrow and see if they are any different. Cheers! M. Link to comment Share on other sites More sharing options...
F355GTS Posted February 27, 2005 Share Posted February 27, 2005 Martin Are the felt seals tight against the hub/ stub saxle joint, I'm just wondering if you have the wrong races in the respective bearings Mark Link to comment Share on other sites More sharing options...
MartinS Posted February 27, 2005 Share Posted February 27, 2005 Thanks for the suggestions guys, but my mistake was slightly more stupid than even I would have expected! I had two of the washers that hold the felt face to face (enclosing the felt). It looked neat and tidy but sleeping on it and actually thinking it was obvious it wasn't right! :) Anyway, both bearing sets replaced now, and the hubs are running like a dream! The nut has to be tighened far less now (pratically just finger tight now) to stop any lateral movement so there is far less resistance. Wahoo! 😬 My first proper bit of mechanical work on the 7 bar changing the oil. I stuck Mintex M1144's in while I was at it. Only problem now is after replacing the oil and cranking the engine to restore some oil pressure, with the plugs back in the engine won't turn, flat battery! 🙆🏻 Thanks again guys M. Link to comment Share on other sites More sharing options...
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