Spring removal from B.S.A Lighting

[ironhorse]

Evening people new on this part of the forums, I need some advice please. I was just about given a BSA Lighting but it needs sorting out, I have owned over the years quite a few air weapons and always maintained them myself, so I striped this lighting down and am now ready to remove the main spring, am I correct is it just a case of compressing the bung at the rear of the main tube and then punch out the large pin that cross’s the tube, on guns I’ve done in the past this was the case, any help much appreciated .

[evo]

hi mate ,,not done one myself but you will get all your answers from here www.bsaownersclub.co.uk/

 

cheers Evo

[Good shot?]

Make an insert as sketch (from a piece of brush steel.)and compress spring as you say, with spring compressor and remove 'pin'.

If you don't have to remove piston, don't, because scope maxi grip rail was very hard to remove without causing damage on mine.

Edited April 25, 2015 by Good shot?

[krugerandsmith]

Evening people new on this part of the forums, I need some advice please. I was just about given a BSA Lighting but it needs sorting out, I have owned over the years quite a few air weapons and always maintained them myself, so I striped this lighting down and am now ready to remove the main spring, am I correct is it just a case of compressing the bung at the rear of the main tube and then punch out the large pin that cross’s the tube, on guns I’ve done in the past this was the case, any help much appreciated .

 

If it has a maxi grip rail this may have to be removed in order to take out piston.

[hyflier]

Generally the piston heads are ok, try re-springing first. You will need to remove the allen bolts at the top and bottom of the cylinder at the rear, remove the metal plug which will give you access to the cross pin. As good shot? said, compress the spring, remove the cross pin and withdraw the spring.

 

The breech seal is all important to power so replace that as matter-of-course. Hopefully that will sort it, the scope rail is difficult to remove but if you need to, have copious amounts of WD40 to hand, or better still, silicone lubricant............. it will help a lot

 

I use a bakelite block, which doesn't cause any damage to the rail.

[krugerandsmith]

Generally the piston heads are ok, try re-springing first. You will need to remove the allen bolts at the top and bottom of the cylinder at the rear, remove the metal plug which will give you access to the cross pin. As good shot? said, compress the spring, remove the cross pin and withdraw the spring.

 

The breech seal is all important to power so replace that as matter-of-course. Hopefully that will sort it, the scope rail is difficult to remove but if you need to, have copious amounts of WD40 to hand, or better still, silicone lubricant............. it will help a lot

 

I use a bakelite block, which doesn't cause any damage to the rail.

 

New rail from Chambers with buffers £17.49. if required

[Underdog]

Do not punch the cross pin out! It will drop out when you have compressed the spring enough.

A large piece of plastic and a soft mallet will drift the rail off.

[ironhorse]

Thanks for all your advice people much appreciated believe me.Ok I finally got the spring out, after allot of fafin about, what confused me was in the past when I have removed main springs I had never come across the metal bung they now install in the Lightning, after removing this well within seconds the spring was out, I don’t think this lighting has ever been opened before, the spring is bent and the condition inside the housing is black sticky muck. My next question is? Is it possible to get the spring carrier out without taking the trigger mechanism apart? If not what is the best sequence to dismantle the trigger.

[ironhorse]

Make an insert as sketch (from a piece of brush steel.)and compress spring as you say, with spring compressor and remove 'pin'.

If you don't have to remove piston, don't, because scope maxi grip rail was very hard to remove without causing damage on mine.

Thanks for your diagram, what I did is us an old witworth socket , got my angle grinder with a grinder stone in it and basically cut deep enough into the socket widening the cut as I went. Now fits a treat.

Edited April 26, 2015 by ironhorse

[ironhorse]

Thought pics may help

[Underdog]

Describe this spring carrier?

 

IIRC removing one pin allows the piston sear to clear the piston on piston removal.

[ironhorse]

Describe this spring carrier?

 

IIRC removing one pin allows the piston sear to clear the piston on piston removal.

I can actually lift the trigger out of the way of the piston, so it must be the sight rail holding it now, although it looks like the piston is shaped to pass the rail, it must be that it only allows the piston to pass so far while being used.

[ironhorse]

Got the sight rail off using a piece of scrap wood and a club hammer, one squirt of w40 two clouts with club hammer and it fell out and no damage. Oh and no need to take the trigger to bits. I have to say I'm not impressed with the piston carrier lumpy thing

[Underdog]

Yes mate. Your bob on. I remember now.

 

Well done. :-)

[Kenneth higham]

On 26/04/2015 at 08:59, ironhorse said:

Thanks for your diagram, what I did is us an old witworth socket , got my angle grinder with a grinder stone in it and basically cut deep enough into the socket widening the cut as I went. Now fits a treat.

I did the same thing thanks to you. 

Just now, Kenneth higham said:

I did the same thing thanks to you.