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TR7 Gearbox Leak

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johnnyj
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TR7 Gearbox Leak

Postby johnnyj » 02 Jul 2018 19:54

Hi folks, I am hoping you good people can offer some wisdom.

My 4 speed 'box is out of the car and I have noticed that there is a leak from the extension. When I turn the input shaft by hand, the area around the end plate/cover (Rimmers p/n 22G1422) weeps a little, right next to the reverse lift plate. It's the part in red, in the picture.

Do you think replacing the end plate will cure this? i.e. is it a known leak area, in peoples' experience?

Many thanks

John
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Triumph TR7 FHC, 1977

skertonman
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Re: TR7 Gearbox Leak

Postby skertonman » 02 Jul 2018 21:16

John,

I seem to recall the part 88G564 is just a blanking plug, which shouldn't really have that much oil behind it, personally I would be checking it for being warped, and resealing it with some gasket sealant when replacing it.

That's my view on it.

Beans
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Re: TR7 Gearbox Leak

Postby Beans » 02 Jul 2018 21:23

No expert on the 4-speed 'box but looking at my parts manual I'd say that there shouldn't be any oil coming from that part of the 'box.
Otherwise there should have been another O-ring (TRS912) to the front of the gear lever housing. And the slot for the reverse lift plate also has no oil seal.
So I'd say your oil leak is coming from somewhere or something else
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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/

johnnyj
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Location: Northampton
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Re: TR7 Gearbox Leak

Postby johnnyj » 03 Jul 2018 20:00

Thanks guys, very much appreciate it. I'll have a good look at the area to see what's going on, and report back.

Cheers

John
Triumph TR7 FHC, 1977

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