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LT77 Gearbox rebuild.

Here’s where to discuss anything specific about your standard(ish) car or something that applies to the model in general.
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atc40
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LT77 Gearbox rebuild.

Postby atc40 » 05 Jul 2016 21:01

I have an LT77 gearbox that could really do with a rebuild, noise in gear and sounds terrible in reverse.

How difficult is it to rebuild?

Any special tools required?

Any help appreciated.

atc40.
Retired and loving it!
1982 TR7 V8 4 Litre.
1978 Stag 4.2 Litre.

Beans
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Re: LT77 Gearbox rebuild.

Postby Beans » 05 Jul 2016 22:11

Not to difficult to do, here's some reading;
http://tr7beans.blogspot.nl/search/label/Gear%20box
And make sure you have copy of the original workshop manual.
Image
1976 TR7 FHC (currently being restored ...)
1980 TR7 DHC (my first car, a.k.a. Kermette)
1981 TR7 FHC (Sprint engined a.k.a. 't Kreng)

http://www.tr7beans.blogspot.com/

atc40
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Posts: 72
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Location: United Kingdom
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Re: LT77 Gearbox rebuild.

Postby atc40 » 06 Jul 2016 07:01

Thank you Beans.
Retired and loving it!
1982 TR7 V8 4 Litre.
1978 Stag 4.2 Litre.

jeffremj
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Re: LT77 Gearbox rebuild.

Postby jeffremj » 06 Jul 2016 08:31

atc40 wrote:How difficult is it to rebuild?

Any special tools required?
I managed to rebuild my TR7 5 speed gearbox, but failed at the last hurdle. For some odd reason I couldn't 'close' the box - I didn't want to force it. I thus had to spend £50 for a gearbox specialist to complete the job. Still, much cheaper than getting them to recondition it.

Basically, read the workshop manual for all the details.

Beans
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Re: LT77 Gearbox rebuild.

Postby Beans » 06 Jul 2016 11:45

jeffremj wrote: ... For some odd reason I couldn't 'close' the box - I didn't want to force it ...

Probably caused by the oil pump shaft not being aligned with the recess in the pumpgear (they are not self-aligning).
Image
1976 TR7 FHC (currently being restored ...)
1980 TR7 DHC (my first car, a.k.a. Kermette)
1981 TR7 FHC (Sprint engined a.k.a. 't Kreng)

http://www.tr7beans.blogspot.com/

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