Walther LP Mod 2 needs TLC & repair?

[PlagueChicken]

Greetings all.

I browsed the forums looking for current information about this topic - but I couldn't find any recent posts about it so here goes:

I've come into possession of a Walther LP Model 2 - but working the piston produces no result. My guess - based on what I've read - is the piston seals are kaput. While my dad was a gunsmith, I've inherited none of his talents so I was hoping for a referral to a reputable person who might be able to help.

Thanks in advance for any potential leads,

PC

[Benelli B76]

Greetings all.

I browsed the forums looking for current information about this topic - but I couldn't find any recent posts about it so here goes:

I've come into possession of a Walther LP Model 2 - but working the piston produces no result. My guess - based on what I've read - is the piston seals are kaput. While my dad was a gunsmith, I've inherited none of his talents so I was hoping for a referral to a reputable person who might be able to help.

Thanks in advance for any potential leads,

PC

PC here is a link to previous enquiry, I have repaired two, but Lawrie Amatruda is a resident expert on these . Baz

http://www.airgunbbs.com/showthread....P2-repair-HELP

[PlagueChicken]

I appreciate the help received so far.

Got a quote of about $100 just to have it looked at by a fellow named Pilkington.
Lawrie reached out (thanks very much!) - but overseas shipping seems tough to justify just to have a working plinker.

Might just invest in a new gun...path of least resistance and $ at this point.

PC

[draitzer]

PC, these guns are known as finicky so many repairers don't want to tackle them. Mostly I think people here in the U.S. work on 'em them as a DIY.
I've done a couple and discovered two piston designs - the early one required a new piston head with O-ring seal to be made, the later has a replaceable seal. The exhaust valve seal is not so hard to replace. It's understandable that repair people would charge a lot.

You might try https://www.bakerairguns.com/repair-restoration/
If they decline they may have a lead on someone else.

Just to be sure, are you opening the pump lever fully to set the valve (an audible 'click') before closing it?

Don R.

[Benelli B76]

The exhaust valve O ring size is quite critical. I tried 3 types that sealed but only one gave a good fps on firing. So long ago I would have to find notes I made.

Baz

[Fronteria]

Get a friend with a lath to machine a single grove in the piston carefully using the top of lip seal groove as the maximum height for the new O-ring groove, and use a O-ring in place of the standard lip seal is all that is probably needed.
I have used this modification and it works very well, just be careful when you insert the piston into it bore as it is easy to damage the O-ring on the very sharp edges, use an oil that will not effect the O-ring material.
If you require a exhaust valve seal John Knibbs does one.
But the change to an O-ring as the piston ring will probably cure your problem.

[draitzer]

Conversion to an O-ring works well for the piston style with a peripheral seal - although the seal is available in the USA from JGAirguns at only $17 so it may not be worth finagling the groove. The piston style with solid plastic head seal (which turns into something like dried varnish as it crumbles) needs a piston top to make up the ~ 6mm height of that destroyed seal, with an O-ring groove cut into that piece...not a big deal but more of a task.

Don R.