wigeon jim Posted February 17 Report Share Posted February 17 Hi , my friend has a SMK M77 and it has a problem as he can’t get air into it, when he puts the probe in and opens the air tank he hears a click from the gun and no air transfer, anyone any idea what the problem might be, cheers Quote Link to comment Share on other sites More sharing options...
oldypigeonpopper Posted February 17 Report Share Posted February 17 Hello, Could not find the SMK M 77 PCP ?, Has he done the Bolt up before filling ?? Quote Link to comment Share on other sites More sharing options...
wigeon jim Posted February 18 Author Report Share Posted February 18 Not sure what you mean Quote Link to comment Share on other sites More sharing options...
sportsbob Posted February 20 Report Share Posted February 20 (edited) It sounds to me his fill cylinder is low on pressure. If his air cylinder is virtually at the same pressure as the gun it is not possible to fill it , the gauge on the supply will closely match the gauge on the rifle. The click will be the fill valve opening inside the gun but if the pressure is similar to the fill tank it will close again. Edited February 20 by sportsbob Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted February 20 Report Share Posted February 20 Need to see a pic of the gun, the gun's pressure gauge and the tank gauge. Quote Link to comment Share on other sites More sharing options...
oldypigeonpopper Posted February 20 Report Share Posted February 20 On 18/02/2025 at 11:49, wigeon jim said: Not sure what you mean Hello, Loading bolt Jim, But i have look at all SMK PCPs and no M77 ?? Quote Link to comment Share on other sites More sharing options...
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