BSA Owners' Club Workshop Discussions

The BSA Workshop => Singles => Topic started by: fragged on 07 Jul, 2024, 12:55

Title: I'm a Bellend B33 Oil feed tube
Post by: fragged on 07 Jul, 2024, 12:55
In an attempt to get the timing right on my B33 plunger I took off the timing side cover and damaged the crank shaft oil feed tube.
When I say damaged I mean snapped it at the shoulder ..

First off how hard is it to remove before I get all caveman with it. And where can I get a new tube ?

Cheers ..
Title: Re: I'm a Bellend B33 Oil feed tube
Post by: fragged on 07 Jul, 2024, 13:27
Found the tube ( Big end oil feed quill )

is it a home job or will it need an adult to do it for me  ?

https://draganfly.co.uk/shop/74282/big-end-feed-quill/#66-0698
Title: Re: I'm a Bellend B33 Oil feed tube
Post by: idie on 07 Jul, 2024, 15:59
You need to remove the punch marks holding the quill in place. A self tapping screw screwed into the hole enable yo to pull it out. Failing that tap a thread in it and screw in a small bolt. When I broke mine I was able to get one on line. They are the same a an M20.
Title: Re: I'm a Bellend B33 Oil feed tube
Post by: fragged on 07 Jul, 2024, 16:24
Thank you for that, just what I was looking for .
Mine doesn't have any punch marks so guessing it's original.

Shame really as it looks in pretty good condition except for the crack lol . I did consider soldering it up

Would I need to set the height of the tube or is it a fit and forget thing ?  I thought bolting the cover on would settle it
to the correct height ?
Title: Re: I'm a Bellend B33 Oil feed tube
Post by: idie on 07 Jul, 2024, 18:02
That won't  work. It is a press fit in the cover. Just tap the new one in it goes against a shoulder. It doesn't press against the crank, it just squirts the oil into the crank. As the B33 has a roller big end you don't need high pressure hence no seal.
Title: Re: I'm a Bellend B33 Oil feed tube
Post by: fragged on 07 Jul, 2024, 20:29
Thanks for the info, really appreciate it..