Re: A couple of Hub and Brake questions

[Roger Furneaux]

hi Steve - this is sometimes a problem: new hubs can be a thou or two undersize, and new seals are typically two or three thou oversize! Check you have the right seals: 2.25" od, 1.5" id, 3/16" thick, and make sure you press them in straight. The original brake drum nuts are, incredibly, 3/8" BSF thread but only 5/16" spanner size and hardly look up to the job (on the back they are holding the hubs to the bearing carriers, and are, therefore, holding the wheels on!!!), and the spring washers are very wide (0.8" od). Nowadays, I supply standard 3/8" BSF half-nuts and standard thin spring washers (0.675" od, 0.08" thick) although we are getting a quote for a batch of large washers. Full nuts can, with some hubs, hold the wheel away from the Rudge-Whitworth taper. I use 33 lbsf. ft. of torque (the same as the 8mm small end clamp bolts) even though in theory 3/8" can go higher, but the studs are not exactly high tensile! As I have Bob's magnificent Alfin drums, I use flat washers since the spring washers would really chew up the ali. The thick chunky spring washers can even chew up steel! ocTagonally TCRoger, "Mad Metrics" PS in case anybody has forgotten, or new members do not know, I can supply virtually every nut and bolt for a TA/B/C, in BSF or metric. PLS ask for a list! Steve S. wrote:

>1) Fitting an oil seal to the front hub of my TC, I'm finding it >impossible to insert the seal without the rubber covering along the >sides of the seal from peeling back in places. Will this be a problem >or can I just leave it that way? > >2) What is the torque spec for the drum brake nuts on a TC?

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