Tuscan Gear Knob turned 90 degs and bound up!

Tuscan Gear Knob turned 90 degs and bound up!

Author
Discussion

Snaaakeey

Original Poster:

184 posts

85 months

Tuesday 25th February 2020
quotequote all
Hi all.

I have had a search through the forums on this issue and it has been touched on before although I have not seen a solution. The gear knob came back loose from str8six on the previous service. I unscrewed the small collar underneath which revealed no locking nut. It seems the gear knob is just screwed on ( other cars seem to have a locking nut under the collar) and possibly locked into place with some type of thread lock. The knob turned 90 deg (Left. I assumed its a normal thread!) then seems to have bound. I can't force it any more for fear of damaging the gear stick linkage. Does anyone have any idea how to proceed? It needs a new gear knob as the old one is a bit scratched up so my thinking was to either hacksaw into the knob ( up both sides and across the top) then split the ali knob off the thread or attempt to get the whole stick and knob assembly out and into a vice although I haven't got a clue as to how this is done.

Any advice will be much appreciated!

Thanks in advance.

T


Edited by Snaaakeey on Tuesday 25th February 11:39

Englishman

2,241 posts

223 months

Tuesday 25th February 2020
quotequote all
IIRC, you turn the knob anti-clockwise to undo - not sure what you meant by 'left'.

I use a strap wrench to both undo and tighten gear knobs as that avoids causing damage to the surface. If you are not worried though, just get a large pipe wrench on it and it should come free, certainly before you damage the linkage.

nawarne

3,107 posts

273 months

Tuesday 25th February 2020
quotequote all
Definitely normally threaded.

Should be (from top down) First, the knob then a I/2 nut to lock, then the tapered collar, which when screwed up (i.e anti-clock) will meet underside of knob and will cover 1/2 nut.

Might be best to screw tapered collar clockwise to expose threaded part of 'stick'. Note that when you try to unscrew (ccw) the knob the gearstick is not turning as well. The gearstick is held onto stub protruding from selector linkage with a 3mm(?) allen grub screw which picks up a flat machined onto the stub. You'll only access this by removing the trim and then the rubber gearstick gaiter. The grub screw may have slackened enough to allow a 1/4 turn?

As previous poster advises, you might get the knob undone by using a strap - eg an oil filter remover 'tool' with the rubber straps?
Light scratching on the knob can be recovered using a scotchbright pad.

Nick

blueg33

40,238 posts

237 months

Tuesday 25th February 2020
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Scotchbrite on your knob! eekgetmecoat

Snaaakeey

Original Poster:

184 posts

85 months

Tuesday 25th February 2020
quotequote all
Lefty loosy ha ha yes anti clockwise.

Well when it was loose I tried a pipe grip to take the knob off which locked her up completely. As you can see I don’t have a locking nut under the ball.



So I went with cutting.


Stuck some wd in the cut and













Sorted. Looks like glue maybe.

Cheers all. Hope this helps someone else. Easy job.

Snaaakeey

Original Poster:

184 posts

85 months

Tuesday 25th February 2020
quotequote all
Might keep the japseye look. Sassy

mk1fan

10,712 posts

238 months

Tuesday 25th February 2020
quotequote all
The small collar is the 'lock nut'.

Snaaakeey

Original Poster:

184 posts

85 months

Tuesday 25th February 2020
quotequote all
Aye sort of. Other owners have posted pics which show a similar collar under the ball but when you unscrew it and drop it away like mine you then have a proper hexagonal nut you can get An adjustable on to really tighten and lock the ball. The collar I have in the pic can only be finger tightened as it’s smooth. Not really a locking nut and I couldn’t get it to lock the knob in place. I presume there may be variations of how the gear knob is attached or something. My collar would undo and rattle about after some hard driving and vibrations.

mk1fan

10,712 posts

238 months

Wednesday 26th February 2020
quotequote all
You need a strap wrench to tighten it. I also use some PTFE tape to or a dab of regular threadlock to help keep things set.

ETA - TVR produced a silly solution to a simple problem.

Snaaakeey

Original Poster:

184 posts

85 months

Wednesday 26th February 2020
quotequote all
Good idea mk1fan. I’ll try that out with my new knob.