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Correct disk brakes

Posted: 16 Jun 2013, 17:17
by Negativegravity
I bough nearly a year ago these brakes from brickwerks:

http://www.brickwerks.co.uk/index.php/b ... -late.html" onclick="window.open(this.href);return false;

With the view to changing my old ones at some point. That point came yesterday, but upon inspection, the housing for the bearings is not tapered inside?! Is this correct? The bearings are tapered so surely these should be too? Unless I'm missing the point somewhere...

1989 T25 diesel

Any thoughts?
Cheers

Re: Correct disk brakes

Posted: 16 Jun 2013, 17:27
by AdrianC
They're the ones which fitted onto our '88 van just fine a few weeks back, together with these bearings

The inner bearing needs the outer race pressing into the disc - BW did it for me when they supplied the pair. The rest is then just push-fit. Ooodles of grease, and make sure the outer nut's not too loose or too tight.

Re: Correct disk brakes

Posted: 17 Jun 2013, 08:13
by Ian Hulley
Negativegravity wrote: The bearings are tapered so surely these should be too? Unless I'm missing the point somewhere...

You still have the outer races in your discs ... this needs to be punched out and the replacement tapped in very carefully by means of a soft drift/punch along the special grooves in the disc for this purpose OR a press which can keep the pressure equal and the race straight.

Ian.

Re: Correct disk brakes

Posted: 17 Jun 2013, 15:21
by Negativegravity
Aha! That sounds like what I missed! Thanks guys. Next task is trying to get the old disk off the stub axle. It's rock solid even with a long handled wrench. I'll try heating the nuts up an bit with a blow torch.

Re: Correct disk brakes

Posted: 17 Jun 2013, 15:54
by AdrianC
Negativegravity wrote:Aha! That sounds like what I missed! Thanks guys. Next task is trying to get the old disk off the stub axle. It's rock solid even with a long handled wrench. I'll try heating the nuts up an bit with a blow torch.

Have you relieved the peening on the nut? This is the big central hub nut, yes? There's a groove in the stub axle, and the lip on the nut is peened into that. You need to get a small and abusable chisel or screwdriver or similar into the groove, and lever that peening back. Then it should turn EASILY. It mustn't be done up tight - the peening is what holds the wheel to the van.

Re: Correct disk brakes

Posted: 17 Jun 2013, 17:20
by Negativegravity
Nah, it's the two on the back that I'm having difficulty with. The central hub nut is fine!

Re: Correct disk brakes

Posted: 18 Jun 2013, 07:32
by AdrianC
Negativegravity wrote:Nah, it's the two on the back that I'm having difficulty with. The central hub nut is fine!

The caliper holder bolts? Oh, yeh... Them's TIGHT. A big breaker bar did mine, or next step would have been the rattlegun.

Re: Correct disk brakes

Posted: 18 Jun 2013, 08:02
by California Dreamin
Yup ^^^^^^^ Big long breaker bar (for leverage) pretty sure these are 14mm so big buggers and torqued up accordingly...I've never had one seized but they are always FT :D

If you are going to re-use your old bearings (nothing wrong with that if they are in good condition) then I would advise that you buy some high melting point multi purpose grease, a new inner seal and outer peened nut (the inner seal can easily be damaged and has probably hardened with age anyway, the nut can be re-used but often they get messed up peening and un-peening).

Martin