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 Post subject: Repair Old Walther LP3
PostPosted: Sat Dec 26, 2015 12:49 pm 
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Joined: Sat Dec 26, 2015 12:42 pm
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I am attempting to repair an old Walther LP3. It is fully dissassembled now and I see the main tube molded seal is completely broken and the top orings/seals are gone.
1) can this piston seal material be re-melted to make a working seal ?
2) I see on the internet some very expensive re-designed pistons. Any other alternatives ?
3) Also on internet one site suggests machining a brass spacer to help seat the ball. Are these available commercially ?

Any help on this project would be greatly appreciated.

Dennis , Chatham, Ont.
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PostPosted: Sat Dec 26, 2015 1:40 pm 
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http://www.airgunspares.com/store/categ ... LTHER/LP3/

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PostPosted: Sat Dec 26, 2015 2:47 pm 
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under500fps wrote:
http://www.airgunspares.com/store/category/64/602/WALTHER/LP3/



Thanks but that isn't the piston seal I need. My original was a molded assembly to the piston. i believe the website is selling a later variation or perhaps one that is used in the later reworked two-piece piston.


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PostPosted: Sat Dec 26, 2015 3:19 pm 
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It looks like maybe it took a seal like a FWB 124? http://tinyurl.com/ohnvroj
I'm sure the 124 seal is way too big but do you think that looks like what might've been in there? Is there anything left of the old seal?
I suppose you could have a piece of alum made to attach to the end which would have an O-ring. http://tinyurl.com/ntzmy4t
That pix is of a double oring mod but the orig is single. I'm picturing the end of that on yours? Just some thoughts...


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PostPosted: Sat Dec 26, 2015 3:31 pm 
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Chevota wrote:
It looks like maybe it took a seal like a FWB 124? http://tinyurl.com/ohnvroj
I'm sure the 124 seal is way too big but do you think that looks like what might've been in there? Is there anything left of the old seal?
I suppose you could have a piece of alum made to attach to the end which would have an O-ring. http://tinyurl.com/ntzmy4t
That pix is of a double oring mod but the orig is single. I'm picturing the end of that on yours? Just some thoughts...


The old seal originally felt like firm plastic but it melted away under a low flame like sealing wax. It was light brown in colour and was originally part of the piston (fused together).

Googling told me it was the older style of piston seal for the earlier LP3 Walthers. My problem is they are not available anymore and a two piece piston ((top, bottom, seal and two screws) is used to replace it.


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PostPosted: Sun Dec 27, 2015 12:20 am 
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Location: United States
So am I to assume the new assy won't fit or is not available? You mentioned orings earlier but I'm not sure how/where. can you show the remaining parts and maybe a sketch of how it's supposed to be? And about how much distance is there between the end of your metal piston and the end of the compression tube so I know how much room you have for a new seal assy. And what is the comp tube ID? With that I can think up something, maybe...


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PostPosted: Sun Dec 27, 2015 12:38 am 
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I make pm to you.


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PostPosted: Sun Dec 27, 2015 1:42 pm 
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Loyer wrote:
I am attempting to repair an old Walther LP3. It is fully dissassembled now and I see the main tube molded seal is completely broken and the top orings/seals are gone.
1) can this piston seal material be re-melted to make a working seal ?
2) I see on the internet some very expensive re-designed pistons. Any other alternatives ?
3) Also on internet one site suggests machining a brass spacer to help seat the ball. Are these available commercially ?

Any help on this project would be greatly appreciated.

Dennis , Chatham, Ont.
Image
Image


This is the guy to talk to (((( Qball ))))))) there is no one else in Canada i would send to .......


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