Sloppy back and forth LT77
Discussion
The gearchange on the Griff seems to be OK, but the lever movement just doesn't feel as solid as it used to - if you get my drift.
Sorry if this has been posted before, but the search function is down.
There's a metal retainer on each side of the gear lever - which provides the stability in the left/right movement, and from what I can tell there's a ballbearing mechanism which probably stops it pushing out of gear. But what gives it the stability in the back and forth movement?
I'm off back to the car now armed with a camera, I'll post pics to see if anyone can see anything awry and would appreciate your help.
Ta
IanB
Sorry if this has been posted before, but the search function is down.
There's a metal retainer on each side of the gear lever - which provides the stability in the left/right movement, and from what I can tell there's a ballbearing mechanism which probably stops it pushing out of gear. But what gives it the stability in the back and forth movement?
I'm off back to the car now armed with a camera, I'll post pics to see if anyone can see anything awry and would appreciate your help.
Ta
IanB
Right, I'm back.
Does this look right?
Oh, I forgot to add, I think the car is in 3rd gear for these pics.
I'm still guessing that you shouldn't be able to see all that linkage though. I've had my finger up inside that bell shaped end (oh god!) and I can feel a spring pushing it upwards, but I don't get why it would be there at all if it sits so high up the gear lever. I'd have thought it was that shape to sit over and cover the linkage.
Anyway, I'll stop waffling and leave it to you.
Thanks
IanB
Gear Lever
gear lever pic2
Does this look right?
Oh, I forgot to add, I think the car is in 3rd gear for these pics.
I'm still guessing that you shouldn't be able to see all that linkage though. I've had my finger up inside that bell shaped end (oh god!) and I can feel a spring pushing it upwards, but I don't get why it would be there at all if it sits so high up the gear lever. I'd have thought it was that shape to sit over and cover the linkage.
Anyway, I'll stop waffling and leave it to you.
Thanks
IanB
Gear Lever
gear lever pic2
Edited by Barreti on Sunday 22 December 12:44
Thank you Red Griff 500
A perfect description and I'm going to print it and have a go tomorrow night at getting the gearlever off and having a look at that bush - which I'm sure is the problem because the gearbox itself isn't being awkward and wasn't making any nasty noises etc before everything went wobbly.
I'll let you know how I get on and thanks again.
IanB
A perfect description and I'm going to print it and have a go tomorrow night at getting the gearlever off and having a look at that bush - which I'm sure is the problem because the gearbox itself isn't being awkward and wasn't making any nasty noises etc before everything went wobbly.
I'll let you know how I get on and thanks again.
IanB
aaargh, I didn't realise the little bearing thingy would fire out when I lifted out the gearlever 
I think the nylon bush is shot, I think I've recovered acracked outer ring but nothing as an inner - except a very worn line inside the outer ring, if you get my meaning.
When tinypic.com gets its act together again I'll post some pictures for advice so I'd appreciate your help again chaps (that means you Red Griff 500
)
I think the nylon bush is shot, I think I've recovered acracked outer ring but nothing as an inner - except a very worn line inside the outer ring, if you get my meaning.
When tinypic.com gets its act together again I'll post some pictures for advice so I'd appreciate your help again chaps (that means you Red Griff 500
) OK, FINALLY the website is up again...
This lever...
bottom of gear lever showing hole for pressure spring
Came out and left this stuck in the hole...
gearbox rosejoint linkage view through centre console
Now from what I can tell from looking at the LT77 gearbox manual, the gear lever on a landrover LT77 has a ball on the end - which would fit into what in the manual is called the gear lever seating which then in turn sits in the Trunnion. (Doncha love engineering words)
From what I can tell, the last picture is the Gear Lever Seating, and the Trunnion can be seen through the hole in the middle picture - correct ?
So is the TVR version different in the seating/trunnion bit or is there something missing off the end of that gearlever?
Here's the page I'm looking at in the LT77 manual
LT77 gear lever exploded view
This lever...
bottom of gear lever showing hole for pressure spring
Came out and left this stuck in the hole...
gearbox rosejoint linkage view through centre console
Now from what I can tell from looking at the LT77 gearbox manual, the gear lever on a landrover LT77 has a ball on the end - which would fit into what in the manual is called the gear lever seating which then in turn sits in the Trunnion. (Doncha love engineering words)
From what I can tell, the last picture is the Gear Lever Seating, and the Trunnion can be seen through the hole in the middle picture - correct ?
So is the TVR version different in the seating/trunnion bit or is there something missing off the end of that gearlever?
Here's the page I'm looking at in the LT77 manual
LT77 gear lever exploded view
Edited by Barreti on Sunday 22 December 12:45
Hi again, here's an update for those interested.
The thing I could see when I'd removed the gear lever was the top of a nylon bush with a rosejoint which the gear lever sits in.
The gear lever pressure spring which you can just see the edge of in (Gear Lever Pic 2) and which fired across the garage when I pulled out the gear lever looks like this
|https://thumbsnap.com/vRmPwZ4N[/url]
Gear lever pressure spring
New rosejoint has arrived - it cost all of £20 incl govt thievery and carriage.
I'll fit it today with any luck and let you know what sort of job it is.
Here's some pictures of the rose joint as it is when new.
Rosejoint and circlip top view
|https://thumbsnap.com/s3bPjpvf[/url]
Rosejoint side view
Rosejoint bottom view
The thing I could see when I'd removed the gear lever was the top of a nylon bush with a rosejoint which the gear lever sits in.
The gear lever pressure spring which you can just see the edge of in (Gear Lever Pic 2) and which fired across the garage when I pulled out the gear lever looks like this
|https://thumbsnap.com/vRmPwZ4N[/url]Gear lever pressure spring
New rosejoint has arrived - it cost all of £20 incl govt thievery and carriage.
I'll fit it today with any luck and let you know what sort of job it is.
Here's some pictures of the rose joint as it is when new.
Rosejoint and circlip top view
|https://thumbsnap.com/s3bPjpvf[/url]Rosejoint side view
Rosejoint bottom view
Edited by Barreti on Sunday 22 December 13:01
Jeeeeeez, what a swine of a job.
I dropped the rose joint into place and was there thinking "this is going to be a piece of cake"
Pah!
I've been under the car all afternoon and still don't have the circlip on - in fact I don't have the circlip at all any more, it pinged off the circlip pliers for the 87th time and vanished into thin air. I mean it literally, I've had my hand all around under the car, beyond my elbow into recesses sometimes, and I can't find the damned thing anywhere.
and if anyone asks me if I've looked on the floor, like my mate did at least a dozen times, I'm coming round your house to slap you silly
No, the f......g circlip isn't on the f......g floor
[and breathe ....]
A trip to Halfords is on the cards tomorrow to hopefully get a replacement circlip.
A trip to the pub is a certainty tonight to hopefully get a sense of humour back.
I dropped the rose joint into place and was there thinking "this is going to be a piece of cake"
Pah!
I've been under the car all afternoon and still don't have the circlip on - in fact I don't have the circlip at all any more, it pinged off the circlip pliers for the 87th time and vanished into thin air. I mean it literally, I've had my hand all around under the car, beyond my elbow into recesses sometimes, and I can't find the damned thing anywhere.
and if anyone asks me if I've looked on the floor, like my mate did at least a dozen times, I'm coming round your house to slap you silly
No, the f......g circlip isn't on the f......g floor
[and breathe ....]
A trip to Halfords is on the cards tomorrow to hopefully get a replacement circlip.
A trip to the pub is a certainty tonight to hopefully get a sense of humour back.
HOORAY
No, make that HOORAY!!
It took me another 4 hours today but just as I was about to give up, and let the Mrs out of the car to finish dinner, I had a 'beserker' moment - you know, when you just go for it and bugger the consequences - and the circlip finally went on.
I had to remove the reversing light switch - which I'd only recently got the garage to do because I couldn't do it - along with the plate mechanism which activates it, so I've still got that to put back and the reversing light switch to calibrate but I feel better knowing its all working again (I think)
I know you warned me Red Griff 500 but you know how it is with these things, you have to find out for yourself. It is only 1 circlip after all eh
No, make that HOORAY!!
It took me another 4 hours today but just as I was about to give up, and let the Mrs out of the car to finish dinner, I had a 'beserker' moment - you know, when you just go for it and bugger the consequences - and the circlip finally went on.
I had to remove the reversing light switch - which I'd only recently got the garage to do because I couldn't do it - along with the plate mechanism which activates it, so I've still got that to put back and the reversing light switch to calibrate but I feel better knowing its all working again (I think)
I know you warned me Red Griff 500 but you know how it is with these things, you have to find out for yourself. It is only 1 circlip after all eh
Grrrrrrr 
[swear] [swear] [swear]
Damned circip popped off tonight when I was testing everything
So, with the help of the Mrs (again) (and didn't she let me know it) I've got it back on.
Odd thing is the nylon bush had been pushed upwards - which is what I'm guessing forced off the circlip.
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?
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?
I take it the plate is what centres the gear lever - as well as providing a mechanism for activating the reversing light switch?
Here is a photo of the linkage from underneath. the rosejoint is visible and you can just make out the circlip to the left of the pressing numbers.
gearbox remote mechanism
[swear] [swear] [swear]
Damned circip popped off tonight when I was testing everything
So, with the help of the Mrs (again) (and didn't she let me know it) I've got it back on.
Odd thing is the nylon bush had been pushed upwards - which is what I'm guessing forced off the circlip.
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?
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?
I take it the plate is what centres the gear lever - as well as providing a mechanism for activating the reversing light switch?
Here is a photo of the linkage from underneath. the rosejoint is visible and you can just make out the circlip to the left of the pressing numbers.
gearbox remote mechanism
Edited by Barreti on Sunday 22 December 13:09
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.
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
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
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