T05 safety

[steveiep]

First off, the trigger is on a Ruger Airhawk Elite, so I acknowledge it's not a true T05 trigger, but a fairly faithful copy.
The problem is, when cocked, the safety has stopped extending back far enough to render the trigger "safe".
I can manually pull it back the extra few fractions it takes to make the trigger safe but would like an auto safety to do what it should.
http://www.gunspares.co.uk/shopdisplayproducts.asp?id=24886&cat=T05+Trigger+Unit
Link to trigger schematic which uses a magnifying glass if you roll the pointer over it.
I can't figure out what pushes the safety on as you cock the gun let alone what to do to make sure it extends far enough back to make it safe. The suspicion is that it's that top spring (CS189) somewhere at the root of it (maybe).
Any helpful suggestions or insight into the potential cause would be appreciated.

[VAFarmer]

More info please...

Have you spaced the spring, or added any washers?

God bless,

Farmer

[Mark 611]

yes more info is needed? their are lots of things it could be like the parts out of spec or a bent part or a part out of alignment, these are problems with Chinese manufactured guns! have you had it apart?

[K_sqrd]

Here is a link to a TO5 assembly. Perhaps it will help identify the problem.

http://www.network54.com/Forum/644843/thread/1251040241/last-1251044110/T05+tigger+disassembly+and+working+principle

Here is a little better pix of the parts

https://www.pyramydair.com/air-gunsairsoft-schematics

HTH

[steveiep]

I think the problem is likely with spring part 108 (on the Pyramid schematic)
I probably gave the spring a stretch lat time I had the trigger out whilst fitting a new mainspring (More tension on a spring is a good thing?... well probably not)
In all other respects, the trigger group is unmolested & works well, save that old safety button now doesn't pop out quite as far as it did.
The more I think about it, it may well be the extra resistance of this stretched spring that makes the difference... unless someone else has any bright ideas?
Thanks for any input.

[Mark 611]

did it work before you stretched the spring? 

[steveiep]

Just to round this one off I solved the problem.
I had put a couple of slip washers ahead of the thophat.
This was enough extra spacing that the portion of the tophat inside the spring struck the mouth of the spring guide, stopping the cocking stroke.
The safety is cocked by the over-travel of the piston rod, so while the sear was engaged, the piston rod wasn't traveling back quite far enough to push the safety out.
No springs were at fault & the simple fix was to shorten the spring guide by 5mm.