Author Topic: bsa c10l gearbox  (Read 143 times)

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Offline allen brighton

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bsa c10l gearbox
« on: January 27, 2019, 05:30:55 pm »
hi guys

I have an unusual problem in as much --I am about to commission my c10l and I cant get any oil into  the gearbox , I removed both plugs --nothing gets past the fill plug --I had the gearbox re-built last year at vast expense  , I wondered if any body has any ideas, I thought to fill via the overflow plug at the side ,  but also is there a breather to allow the air to expand when the oil gets  hot

any ideas

regards

allen

Offline ThomasC11

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Re: bsa c10l gearbox
« Reply #1 on: January 27, 2019, 05:58:53 pm »
Hi Allen, do you have a picture of your gear box to show the problem? Cheers, Thomas
1946 BSA C11
1937 Sunbeam Model 9
... and a dented Opel

Offline Owen

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Re: bsa c10l gearbox
« Reply #2 on: January 27, 2019, 06:24:17 pm »
I bet there is some gunge or grease stopping the oil getting in. Is it a three speed air four speed light weight box?
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11
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Offline allen brighton

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Re: bsa c10l gearbox
« Reply #3 on: January 27, 2019, 07:02:44 pm »
hi guys  thanks for your reply ---consulted the parts diagramme and it appears that what I was trying to fill through was ---gear controlling shaft retaining plug pin  ---so I see my mistake  it a 3 speed box

so I am assuming I fill through the over flow plug --many thanks for your input
regards

allen

Online chaterlea25

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Re: bsa c10l gearbox
« Reply #4 on: January 27, 2019, 08:21:02 pm »
Hi Allen,
Remove the  large round plug  that covers the pushrod adjuster, Fill the box through the hole until oil is up to the level plug
give it time for the oil to flow into the inner housing

John