Walther LGM2 Problem

[wonky donky]

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Pad.E If your reading this, your guns DON'T LOOK LIKE THIS

I'm in the middle of sevicing a Walther LGM2 single stroke pnuematic 10m rifle;
The owner complained it had lost power over time & sometimes it would fail to hold it's air!

I had already stripped, cleaned & reassembled the trigger parts, probe etc. & had started on the valve system when I realised this may be of interest to the few LGM2 owners out there.

The problem was basic lack of maintenance. The chamber had almost filled up with rust, the valve spring was "cacked up". I have also seen this problem on FWB 600's.

The valve seal is the same one as fitted to the Walther LGR series.
I have included a new seal together with the old one in the photo to compare.

The two cap head screws in the photo are used to hold the trigger block to the compression cylinder, these were put in using thread lock of some sort, a hair dryer will not help release this stuff a little more "aggression" is required here, but not too much, no "blow lamps" or paint guns please!

I've tried to show the compression chamber & valve housing in the second photo, you can just see the remainder of the rust in there, it was about 50% full of rust when I started, not leaving much room for the valve & spring, or air for that matter!

One interesting point is what looks like a spring guide in the third photo is a piece of solid flexible rubber that fits inside the hammer spring shown alongside.

Well for those interested I'm sorry I've not given more detail the job was almost done, what more can I say?

[Pad. E]

Pad.E If your reading this, your guns DON'T LOOK LIKE THIS

I know

Interesting article, which means nothing to me also.

[dvd]

I appreciate your writing because it has confirmed what a silent killer rust can be even in SSP target guns.
Though my gun has a stainless steel action, I was aware of the condensation issue by seeing a small wisp of it upon discharge.
Over here (Malta) on hot days, when the atmospheric humidity can hit the 80% mark, that can cause long term problems if left untreated.
The barrel is not stainless and when I'm done shooting, I spray a bit of oil down the barrel, close the bolt and leave the gun muzzle down for a few hours.
I make sure that NO oil gets back into the chamber. It is not needed there.

[wonky donky]

I appreciate your writing because it has confirmed what a silent killer rust can be even in SSP target guns.
Though my gun has a stainless steel action, I was aware of the condensation issue by seeing a small wisp of it upon discharge.
Over here (Malta) on hot days, when the atmospheric humidity can hit the 80% mark, that can cause long term problems if left untreated.
The barrel is not stainless and when I'm done shooting, I spray a bit of oil down the barrel, close the bolt and leave the gun muzzle down for a few hours.
I make sure that NO oil gets back into the chamber. It is not needed there.

Hi Dvd,

You would be alot better off coating you bore with Teflon, use a Grease, it's an easy process, you clean the bore,........coat with Teflon grease.........leave for 3omins.....wipe out the bore, a quick way is put a VFG felt pellet in & a pelleton top, shoot them both out...job done, I also coat my pellets ,with Teflon but not grease, & make sure they are dry when I use them!

[dvd]

Hi wonky,
what you said sounds ok. Personally I find that greasing the inside of the barrels is a bit OTT.
I have always used clean engine oil and it works brilliantly.
The same goes for wiping off any finger marks on the bluing and as a rust preventer.
Others swear by silicone oil as a rust preventer.
Anything that forms an airtight barrier between the metal and the atmosphere should do the trick I suppose.

[wonky donky]

Hi wonky,
what you said sounds ok. Personally I find that greasing the inside of the barrels is a bit OTT.
I have always used clean engine oil and it works brilliantly.
The same goes for wiping off any finger marks on the bluing and as a rust preventer.
Others swear by silicone oil as a rust preventer.
Anything that forms an airtight barrier between the metal and the atmosphere should do the trick I suppose.

Yes but you have do it every time you put your gun away! What I do you only have to do when you clean the bore, probably every 6/12 months in my case & no worry about rust!

But I respect what you say, I just don't like the idea of compressed air & oil!.Very Very bad!