Should there be locking nuts,locking washers or tabs or something on the propshaft flange bolts?Mine were loose

If your bolts go straight into the flange then use locktight and a split washer...

If your bolt goes through the flange use locktight and a nylock on the other side....With some washers of course!

Originally mine had bolts with a special coating (from Ford). Looks like blue paint when you undo them.

I used a Loctite locking compound when I replaced the bolts (the sort of compound that can be undone with a bit of effort).

Ford still sell the proper bolts for the sierra, they are about £1.30 each I could look fot the pt. no. if you need it.

[Edited on 19/8/08 by Dingz]

hmm loctite damages most plastics, i think that applies to nylon used in nlyloc nuts too, so using both together might be counter productive

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Originally posted by RickRick
hmm loctite damages most plastics, i think that applies to nylon used in nlyloc nuts too, so using both together might be counter productive

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yea just use loctite

And tighten them properly - they're usually at a fairly high torque setting, which can be hard to achieve on something that's designed to rotate!

does anyone know what the thread is for the bolts that go into the flange?
thanks