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 Post subject: SIG_Haemmerli Assembly
PostPosted: Sat Dec 23, 2017 2:19 pm 
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Joined: Fri Nov 25, 2005 11:46 am
Posts: 438
Location: Western Washington State, USA
Greetings,

At the suggestion of our host, Scott Pilkington, I am requesting the help of anyone that has successfully torn down and assembled a P240 receiver.

The quest is to determine the step-by-step procedure to resetting all the little trigger screws.

i.e. Start with screw "A" and adjust so that trigger/hammer does something and turn screw 1/4 turn more/less.

Then progress to the next adjustment.

Bear in mind we both have the Factory Owner's Manual that offers little to no help in this matter.

Scott has offered to immortalize this procedure by adding it to the TenP files.

With kind regards,

Dave


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PostPosted: Sat Dec 23, 2017 3:13 pm 
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Joined: Wed May 05, 2004 3:58 am
Posts: 544
Location: Corner of Walk & Don't Walk
If you and Scott can't figure it out between the two of you, I can only offer prayers to St. Chilton*.






* "Installation is the reverse of removal."


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PostPosted: Sat Dec 23, 2017 3:36 pm 
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Joined: Fri Jun 28, 2013 2:13 pm
Posts: 101
Dave,
'D' is only critical adjustment. It is sear engagement with hammer. The rest you set to what feels good to you. Obviously 'C' affects reset and only so much you can do there.
Jon

So I would set approx. sear engaement first then adjust other spring weights accordingly.


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PostPosted: Sat Dec 23, 2017 6:10 pm 
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Joined: Fri Nov 25, 2005 11:46 am
Posts: 438
Location: Western Washington State, USA
Greetings Jon,

A good start.

What are the parameters for adjustment?

i.e. Hold trigger back and move screw "D" until hammer falls then add/subtract 1/4 turn, or 1/8 turn.

Attached is the flow chart for the model 280 and, also, the SP-20 as an example of good documentation.

Cheers,

Dave


Attachments:
280.jpeg
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280B.jpeg
280B.jpeg [ 33.34 KiB | Viewed 376 times ]
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PostPosted: Sat Dec 23, 2017 6:33 pm 
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Joined: Fri Jun 28, 2013 2:13 pm
Posts: 101
Dave I go by experience......what I want it to feel like. So I don't do any particular 1/4 turn etc until I get close to what I want. I know that doesn't help. For sear engagement I use Sharpie and blacken sear so I can see the engagement. The more engagement the more roll.
Jon


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PostPosted: Wed Dec 27, 2017 10:19 pm 
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Joined: Mon Jul 07, 2008 4:04 am
Posts: 525
Location: Sydney, Australia
Hi Dave, it may be worth your while reaching out to Doris Siebert of Roco Systems in Texas, A few years ago she able to help me out with some P240 dis-assembly instructions - showing she had deep understanding of P240 internals.


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