Hi all, first time posting here. My dad recently found his old Walther CP88 competition CO2 pistol, and when we tried to put a CO2 canister in and fire it, the CO2 would just blast through the barrel and be empty in seconds. Does anyone know what causes this?
Umarex Problem with Walther/Umarex CP88, does anyone know what the cause is?
- Thread starter BradyK
- Start date
Valve is sticking open. Cock it and try again? If it still fails, it's time to take it apart.
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We couldn't get it to stop in the 3 tries we gave it. (everytime we tried it burned a CO2 canister) Would I need to get any parts to repair that?
Thanks for the Reply
Thanks for the Reply
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More than likely. I wouldn't bother with it unless it has sentimental value to you. Umarex stuff is budget minded and I don't believe parts are available readily (but could be wrong) pick it apart and see if it's just orings or a stuck valve and do what you can? Calipers will help you figure out the orings.
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the 88 has been around for a long time and they sold for over 300 bucks in their life span
the idea of not fixing it is absurd
parts and parts diagrams
see that Umarex has their name associated is not good they would want you to send it to them
https://en.wikipedia.org/wiki/Walther_CP_88
i would replace the whole valve but they are hard to find but Protek shows one part 416.60
http://www.proteksupplies.co.uk/walther-spares.html
now you are more then likely going to have to go to the UK for parts but Chambers has stopped shipping to the states for now, Knipp has not said anything as of yet nor has Protek
now any Orings you would find in the valve would have been Urethane and the replacements need to be the same there are some kits out there just do some searching
this is Knibbs parts diagram and their prices with VAT on them so the price in your basket will be less if it know that they would be shipped to the states Vat i believe is 19%
https://www.airgunspares.com/gunspares/airgun-spares/walther/cp88.html
the idea of not fixing it is absurd
parts and parts diagrams
see that Umarex has their name associated is not good they would want you to send it to them
https://en.wikipedia.org/wiki/Walther_CP_88
i would replace the whole valve but they are hard to find but Protek shows one part 416.60
http://www.proteksupplies.co.uk/walther-spares.html
now you are more then likely going to have to go to the UK for parts but Chambers has stopped shipping to the states for now, Knipp has not said anything as of yet nor has Protek
now any Orings you would find in the valve would have been Urethane and the replacements need to be the same there are some kits out there just do some searching
this is Knibbs parts diagram and their prices with VAT on them so the price in your basket will be less if it know that they would be shipped to the states Vat i believe is 19%
https://www.airgunspares.com/gunspares/airgun-spares/walther/cp88.html
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That's expensive enough to fix. My style of problem solving would require more than the symptoms and a visual look at the assembly. In fairness it's a gun I'm 100% unfamiliar with, but I've gained a talent in life of being able to fix most things given enough time and data resources (especially things like sourcing high durometer wear resistant orings).
Luckily I think this one is going to be bad seals or valve parts, best case scenario some mild corrosion preventing parts from moving.....i hope for op. Best case it needs a lube and clean, and I hope that's it. That was even the case in some 60s and 70s crosmans I've refurbished for people that just sat in a garage for decades down by the beach.
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Just reassembled the pistol, and holy poop is that the most aggravating thing I've ever had to put back together. Whatever German thought those little tiny bbs were a good thing to hold in even tinier springs I would like to have a chat with... Will test tomorrow if the CO2 issue persists, couldn't find anything visually wrong with the valve assembly, just cleaned it up a bit, although there is one O-ring that may need replacing
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i have a steadfast rule
if you open them up replace the soft parts
now you might get lucky and it will not leak and you have an advantage you have been in there and got it back together and your knowledge level is better than it was
but why open in it up twice
CO2 guns to leak takes the smallest piece of crud so good luck but get the parts and put them with the gun, that is what i would do
if you open them up replace the soft parts
now you might get lucky and it will not leak and you have an advantage you have been in there and got it back together and your knowledge level is better than it was
but why open in it up twice
CO2 guns to leak takes the smallest piece of crud so good luck but get the parts and put them with the gun, that is what i would do
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