BSA Owners' Club Workshop Discussions

The BSA Workshop => Singles => Topic started by: Tigerfeet on 29 Jun, 2025, 15:55

Title: Removing oil seal cover plate in primary drive C15F
Post by: Tigerfeet on 29 Jun, 2025, 15:55
I've belatedly decided to renew the oil seal in the primary drive that seals the sleeve gear. I've removed the six screws - and can't get the cover plate to budge. There are traces of some black compound on the gasket fitted by the previous owner - I assumed it was RTV but am now wondering if it is a glue!

I've tried brushing a drop of acetone around the edge, with zero effect.

Does anyone have an clever ideas for shifting it - other tham hammers and chisels!
Title: Re: Removing oil seal cover plate in primary drive C15F
Post by: Beeza jon on 29 Jun, 2025, 16:13
Subject to a more technical reply...a soft mallet and a suitable piece of hardwood (important that) and gently try to drift it off.

Also, consult the parts book for a better idea of what the situation is (I always find that useful)
Title: Re: Removing oil seal cover plate in primary drive C15F
Post by: Steve.S on 29 Jun, 2025, 17:54
Perhaps you could warm it with a hot air gun to soften the adhesive?
Title: Re: Removing oil seal cover plate in primary drive C15F
Post by: DAVE BRADY on 29 Jun, 2025, 22:35
Hi,

As well as the hot air gun use the wood drift to tap the cover against the radial ribs.  As the gasket is probably the weakest part of the joint turning it may cause the gasket to come apart.

Dave.
Title: Re: Removing oil seal cover plate in primary drive C15F
Post by: Tigerfeet on 30 Jun, 2025, 14:38
Its off!  Heat seemed to be the key factor. Thanks for the ideas!