Trying to make up a puller for a steering wheel (Land Rover) so it's
imperial (it really is in this instance!)
Can anyone tell me which imperial thread is frequently confused for 6mm
metric? To be a bit clearer, I can't use my thread gauges in this
instance because they're a bit too wide to probe the hole in question.
But a 6mm threaded rod *will* go in nicely like it's a perfect fit - up
to a point! After several turns, however, it binds up. So... what
imperial bolt size & thread type would this most likely be? Something
very close to 6mm metric but 25 TPI. AF? UNF? UNC? Any ideas?
On Sun, 22 May 2016 02:03:34 +1000, F Murtz wrote:
Perhaps I didn't make myself clear enough earlier. Whatever this thread
is, it's very, very close to 25TPI. Like *VERY* close if not spot-on.
This is because the 6mm rod that almost fitted is *very* close to 25TPI.
What age is the Land Rover? Before metric, most UK car threads were
unified. UNC for threads into ally - but for steel and nuts and bolts
6mm would be closest to 1/4" UNF/C. The spanner which fits that is 7/16th
AF. The next size up in UNF/C is 5/16th. About 8mm.
Generally, in terms of thread pitch, UNC is closer to metric than UNF.
*Don't squat with your spurs on *
Dave Plowman email@example.com London SW
Do you need a puller?
Leave the centre nut on a turn or two, and give the wheel a really good
wiggle and a thump from behind and a wiggle and a thump from behind.
It'll let go soon enough. When it does, you will WANT that centre nut
still on - else you'll get a steering wheel in the face...
Tried it already. The problem is the more modern LR steering wheels are
very rubbery affairs and lack the rigidity necessary for such an approach
to succeed. Anyway it's probably just as well it didn't work as I'd left
off the centre nut! :-D
I don't doubt it, but the frame could be made of cast iron for all the
good it will do to clump it when its smothered in rubber. If you can't
transmit the shock to the splines thanks to all the rubber, there's not
much you can do - other than use a puller.
Won't work for a steering wheel; different forces in play.
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