Sam Posted March 8, 2006 Posted March 8, 2006 Right, I have bought new extended wheel studs to go in my sierra hubs. I got the old ones out fine......but i cant get the new ones in and it is driving me crazy. I have got a big hammer (believe me!! but it just isnt doing the job!! Is there anyway that i can make the hole bigger or file down the bolt?? Or heat something!? Any help please!! p.s. No jokes needed about the size of my hammer. Quote
pete g Posted March 8, 2006 Posted March 8, 2006 get some tubing or plate with hole in it and fit a nut and wind the little b******* in. double check the studs are the same size you changing them for Quote
Sam Posted March 8, 2006 Author Posted March 8, 2006 They 'look' the same, might have to measure more accurately. I will have another go at winding them in. Dont rate my chances!! Quote
adamnreeves Posted March 8, 2006 Posted March 8, 2006 Right, I have bought new extended wheel studs to go in my sierra hubs. I got the old ones out fine......but i cant get the new ones in and it is driving me crazy. I have got a big hammer (believe me!! but it just isnt doing the job!! Is there anyway that i can make the hole bigger or file down the bolt?? Or heat something!? Any help please!! p.s. No jokes needed about the size of my hammer. I recently put extended studs in my rear hubs. This is what I did. 1. Insert studs through the hubs I used several washer and placed over the stud. 2. I also ligned up the splines as best as I could by feel. 3. Then I started screwing on the open ended wheel nut until finger tight initially. 4. Tap the stud from the other end light with a hammer. 5. Tigned up the nut this time with a 17mm small spanner (you do not want to exert to much torque! 6. Tap with hammer again and repeat step 4 - 5 until the stud is in. 7. Make sure that you cannot see a gap between the stud head and the hub, I held up to a bright light. That is it. Took about 10 mins per stud. Quote
Sam Posted March 8, 2006 Author Posted March 8, 2006 There seems to be about 10 mm to go on the studs, but if i look on the other side it seems tight in there already!! Is this where the brute force comes in!! Dont want to ruin the threads....... Sam Quote
Sam Posted March 8, 2006 Author Posted March 8, 2006 I am not looking forward to this!! Oh yeah and then rebuilding half of the back end of my car! b*******. Quote
adamnreeves Posted March 8, 2006 Posted March 8, 2006 There seems to be about 10 mm to go on the studs, but if i look on the other side it seems tight in there already!! Is this where the brute force comes in!! Dont want to ruin the threads....... Sam You ligned the splines up before starting to press in, if not you may be cutting more splines in the stud hole which would take quite a bit of force and I presume you would have to get a hydrolic press to get them in. You do not want to be exerting too much force you should not go over 115nm but I guess that would be hard by hand with the average spanner Quote
Man On The Clapham Omnibus Posted March 9, 2006 Posted March 9, 2006 Check that the heads of the studs are not fouling the hub centre. If the heads are a bit bigger than the old ones they might need a touch on a grinding wheel locally. Just a thought.... Quote
adamnreeves Posted March 9, 2006 Posted March 9, 2006 Just another thought, you got the right studs; ford M12 X 1.5mm thread. The shank diameter where the splines are should measure 13.1mm. I once got the wrong studs which looked the same but were for vauxhall and newer fords I think and the splines were just over 14mm. Quote
Man On The Clapham Omnibus Posted March 9, 2006 Posted March 9, 2006 Just another thought, you got the right studs; ford M12 X 1.5mm thread. The shank diameter where the splines are should measure 13.1mm. I once got the wrong studs which looked the same but were for vauxhall and newer fords I think and the splines were just over 14mm. Adam has a good point - when I did my studs they were really quite easy to pull in. Not a push fit with a hand, but not an "I'm worried that I might be doing some damage" sort of tight fit either. Quote
Sam Posted March 9, 2006 Author Posted March 9, 2006 I am 99% sure that they are the M12x1.5 size. Will have to give them a measure when i get home. I am going to have a go with the bolt method tonight. Will let you know how i get on. Quote
Blatman Posted March 9, 2006 Posted March 9, 2006 There are definitely 2 types of M12 x 1.5 stud though. There's the Cortina ones which is what you want, and there's the Escort Mexico ones which have a larger shank and spline section. The escort ones *won't* fit in a steel hub. You could probably force them into an ally hub with a big enough press but I wouldn't advise it. Or you could drill the stud holes slightly with the correct size drill, the correct size being whatever the Zeus book says it is for an interference fit. Guaranteed it'll be a bl**** odd size though, and it's not really something I'd want to have a go at without a decent pillar drill, a bl**** good clamp and a better pair of eyes! Quote
adamnreeves Posted March 9, 2006 Posted March 9, 2006 I measured the studs I used: M12 X 1.5mm thread. Splin section is 13.1mm diameter, it is 7mm deep. the shank or shoulder of the bolt is 13mm, making a total unthreaded section of the bolt 20mm long. The threaded section length depends on the extended size of course. Quote
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