More Gearbox issues

Technical advice Q&A
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keithmac
Posts: 61
Joined: Sun Jan 22, 2017 2:54 pm
Location: Peterborough,On.
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#1 More Gearbox issues

Post by keithmac » Sat Jan 05, 2019 1:12 pm

My just rebuilt gearbox pops out of third and has a bad shifter shake. ( It did before rebuild )
So I removed the box lid and had a look. As you can see in the photo the speed change fork for 3/4 is nearly 1/4" wider than the shown measurement for 1/2 fork. They are supposed to be identical parts. Just one small fraction of the fork was actually engaging the gear. Its amazing it even shifted.
How the heck did this happen? How the heck do I fix it?
I see a new one is around $500 Canadian from UK
The endless challenges continue.
Back to the re builders with it.
Keith
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Early 1967 S1 OTS, 1952 MG TD

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keithmac
Posts: 61
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Location: Peterborough,On.
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#2 Re: More Gearbox issues

Post by keithmac » Sat Jan 05, 2019 4:34 pm

Better picture
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Early 1967 S1 OTS, 1952 MG TD

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keithmac
Posts: 61
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Location: Peterborough,On.
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#3 Re: More Gearbox issues

Post by keithmac » Sat Jan 05, 2019 4:38 pm

Whoops.
I will get the hang of this.....
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Early 1967 S1 OTS, 1952 MG TD

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64etype
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#4 Re: More Gearbox issues

Post by 64etype » Fri Jan 11, 2019 1:39 am

John North over on Jag Lovers is rebuilding a gearbox and mentioned problems with shift fork wear. You might want to touch base with him. Here's the thread. https://forums.jag-lovers.com/t/worn-shift-forks/369016
Eric

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