Sloppy back and forth LT77
Discussion
barreti said:
The only thing I can think of is I over-tightened the spring loaded L shaped plate under the gearlever.
Is this likely to have been the problem?
Looking at how the spring loaded L shaped plate works, I wouldn't have thought it possible to overtighten it, but if the adjustment bolts (the ones with lock nuts on them) have been overtightened I guess it is possible.
barreti said:
How do I know how much to tighten that spring loaded plate? I'm guessing I need to tighten in until the springs are compressed a bit, then do it a bit at a time and feel the gear lever movement to see if it's working ok?
Put the plate on and align the centre of the plate with the middle of the gear lever when its in neutral, tighten the plate up using the spring loaded bolts until the plate is close to but not touching the gear lever. Then put the car into reverse and tighten the plate so it touches the gear lever. This should be roughly in the right place but it might need a little bit of fettling.
barreti said:
I take it the plate is what centres the gear lever - as well as providing a mechanism for activating the reversing light switch?
Nearly but not quite. The plate stops you putting the car into reverse accidentally - it creates that resistance you feel when you try to get reverse. And it's also the thing that depresses the reverse light switch.
Gents, have replaced the aforementioned gear linkage bush today and just like Barreti has mentioned, the circlip has fallen off even though I checked to see it was seated correctly.When veiwed from below with an assistant moving the gear lever back and forth,the bush loses its circular shape causing the circlip to fall of? is this common to have the circlip fall off?
As the bush is forced down by the gearlever I have a feeling that the bush can`t go far anyway with this missing. any thoughts?
thanks Dave
As the bush is forced down by the gearlever I have a feeling that the bush can`t go far anyway with this missing. any thoughts?
thanks Dave
Blimey, glad to see one of my posts being put to good use.
Dave, I can't understand how the bush is being deformed. The thing in the picture is a rose joint and doesn't come apart as far as i remember, so there should be nothing to make it deform. I guess you've had the bush out of the car at some stage, did the ball swivel inside the nylon bush nice and freely.
As the lever moves the circulating ball should be allowed to slide up and down the gear lever a bit to account for the extremes of lever throw - so in neutral it would be furthest up the lever and in reverse or 5th have slid down a bit.
Because of that, I don't think the bush will stay put just by the pressure of the gear lever, or if it does its going to give you a very vague feeling as the entire bush may lift out of the hole when you go for 5th
If its any consolation, I was certain I'd got the circlip in the first time I fitted mine and only when properly testing it did the daft thing ping off. Since refitting it with a circlip from a pack I bought from the local motor factors I've had no problems.
Dave, I can't understand how the bush is being deformed. The thing in the picture is a rose joint and doesn't come apart as far as i remember, so there should be nothing to make it deform. I guess you've had the bush out of the car at some stage, did the ball swivel inside the nylon bush nice and freely.
As the lever moves the circulating ball should be allowed to slide up and down the gear lever a bit to account for the extremes of lever throw - so in neutral it would be furthest up the lever and in reverse or 5th have slid down a bit.
Because of that, I don't think the bush will stay put just by the pressure of the gear lever, or if it does its going to give you a very vague feeling as the entire bush may lift out of the hole when you go for 5th
If its any consolation, I was certain I'd got the circlip in the first time I fitted mine and only when properly testing it did the daft thing ping off. Since refitting it with a circlip from a pack I bought from the local motor factors I've had no problems.
Edited by Barreti on Friday 10th August 09:43
Barreti, the bush came in 2 pieces, the ball and the socket which I had to assemble. I have put the circlip back on and now seems fine. The bush does lose its shape as you move the gear lever, looks a bit odd, like its made of an inferior type of plastic?
Tha job itself is fidley as you suggest, however, rather then using circlip pliers I used a pannel pin bent to hold the circlip open whilst pushing it onto the bush from below and sliding the circlip off the pin, this made it quite easy in the end.
Barretti just shows you the value of Piston heads as this thread provided me with exactly the details I needed.
Regards Dave
Tha job itself is fidley as you suggest, however, rather then using circlip pliers I used a pannel pin bent to hold the circlip open whilst pushing it onto the bush from below and sliding the circlip off the pin, this made it quite easy in the end.
Barretti just shows you the value of Piston heads as this thread provided me with exactly the details I needed.
Regards Dave
60maxx said:
Tha job itself is fidley as you suggest, however, rather then using circlip pliers I used a pannel pin bent to hold the circlip open whilst pushing it onto the bush from below and sliding the circlip off the pin, this made it quite easy in the end.
Fantastic Top Tip Dave, I'll remember that one 
60maxx said:
Barretti just shows you the value of Piston heads as this thread provided me with exactly the details I needed.
Regards Dave
Exactly why we are here I guess, helping each other out. I'm chuffed my info helped Dave and glad you've got the car fixed ready for what looks like being a blinding weekend.Regards Dave
https://tvr-parts.com/tvr-parts/part-details/tvr-u...
https://tvr-parts.com/tvr-parts/part-details/tvr-u...
Not sure about the Sherpa but these looks like the bits for a TVR with an LT77 box, but If you give TVR Car Parts a call with their reference numbers they may be able to advise.
https://tvr-parts.com/tvr-parts/part-details/tvr-u...
Not sure about the Sherpa but these looks like the bits for a TVR with an LT77 box, but If you give TVR Car Parts a call with their reference numbers they may be able to advise.
Edited by Barreti on Tuesday 30th January 19:22
My car dropped its selector ball a couple of weeks ago at the end of the street after going for a nice spin. I ordered the nylon cup, ball and circlips from TVR Parts, very reasonably priced and they arrived today.
After reading this thread I was worried how this would go, but it was relatively easy taking a different approach. The selector rod end is held on to the selector rod with a tapered screw that has a square head, which in my case was just a little bigger than 3/8”, so I needed to tap an extension onto it before I could undo it. Once out, the rod end has a small linkage attached that needs to be undone with a 10mm socket and spanner, then it just slides off. With it on the bench I could install the cup, ball and circlip with ease. Popped it back on, lined up the holes, installed the tapered screw and linkage, then it was all interior work after that. Not bad at all, a couple of hours in all.
I hope this helps someone....
After reading this thread I was worried how this would go, but it was relatively easy taking a different approach. The selector rod end is held on to the selector rod with a tapered screw that has a square head, which in my case was just a little bigger than 3/8”, so I needed to tap an extension onto it before I could undo it. Once out, the rod end has a small linkage attached that needs to be undone with a 10mm socket and spanner, then it just slides off. With it on the bench I could install the cup, ball and circlip with ease. Popped it back on, lined up the holes, installed the tapered screw and linkage, then it was all interior work after that. Not bad at all, a couple of hours in all.
I hope this helps someone....
Just about to take the lever apart as mine also feels sloppy. If it does indeed need a new rose joint then I'll attempt the replacement.
Couple of questions, what should I lubricate the plastic rose joint with?
With the method described by the last poster, anyone have a picture of this linkage and do I access it from below or above?
Couple of questions, what should I lubricate the plastic rose joint with?
With the method described by the last poster, anyone have a picture of this linkage and do I access it from below or above?
Just doing the same job, that circlip is a pain of the highest order. My solution: put the nylon cup in upside down from below, nor too hard a bit of a squeeze, and then circlip it from above - very easily done.
Will drive it for a bit and if there are any issues will post here but for now
Will drive it for a bit and if there are any issues will post here but for now
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