The BSA A7-A10 Forum

Technical => A7 & A10 Engine => Topic started by: Stevie1262 on 10.02. 2019 13:35

Title: A10 Cam Followers
Post by: Stevie1262 on 10.02. 2019 13:35
Had my Barrel rebored and my mate painted it ...unbeknown to me he vapour blasted it ...the results are awesome ...except... I had blanked off the cam followers with gaffer tape but forgot about the holes on the barrel base ....so last night ready to install and I just remembered about the gaffer tape ...took it off and surface rust and silica everywhere....the followers were jammed solid...tried to wash it out with oil and cleaners ...moving but it’s into the locating grooves so looks like it will all have to come apart (what I SHOULD have done at the beginning) I see that there are three grub screws ...steel into cast iron 😖 ...they look to have been out before ...engine had a complete rebuild before I got it but the barrels were glazed and damaged ....anyone got any advice before the impact driver comes out ....
Title: Re: A10 Cam Followers
Post by: beezermacc on 10.02. 2019 14:05
From memory the grub screws are standard 1/4 BSF thread and made of fairly soft material. If you had to drill them out it wouldn't be a disaster because you can make some new ones out of 1/4 bsf bolts.
Title: Re: A10 Cam Followers
Post by: Greybeard on 10.02. 2019 14:28
I've not found the ones on my block to be extremely tight.
Title: Re: A10 Cam Followers
Post by: orabanda on 10.02. 2019 14:51
There is a tiny (3/16"?) ball under the top screw........don't lose it!
Title: Re: A10 Cam Followers
Post by: Greybeard on 10.02. 2019 16:29
...you can make some new ones out of 1/4 bsf bolts.
I lost one of mine so made one that way.
Title: Re: A10 Cam Followers
Post by: Stevie1262 on 10.02. 2019 19:49
Many Thanks the Forum comes up trumps again ...,this A10 is fighting me all the way 😖
Title: Re: A10 Cam Followers
Post by: Stevie1262 on 11.02. 2019 21:19
Yep correct ...the screws came out easy didn’t lose the ball bearing and drifted the pin out cleaned and replaced all lubed and smooth now ....cheers for info