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Crosman piston seal wear https://www.airgunforum.ca/forums/topic78236.html |
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Author: | HuskyDude [ Wed Jan 03, 2018 9:12 am ] | ||
Post subject: | Re: Crosman piston seal wear | ||
Seal looks dry. Or did you just wipe it off? Wondering if it has anything to do with the scuff marks you see on the piston. Can you see the same marks on the inside of the cylinder?
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Author: | TCooper [ Wed Jan 03, 2018 9:45 am ] |
Post subject: | Re: Crosman piston seal wear |
HuskyDude wrote: Seal looks dry. Or did you just wipe it off? Wondering if it has anything to do with the scuff marks you see on the piston. Can you see the same marks on the inside of the cylinder? The piston was lubed with moly paste but everything was cleaned off for the picture details. The scuff marks on the piston are from the manufacturer. Those areas have no contact with the receiver tube so they stay as dark scuffs. The contact area is on the top of the skirt where it gets lightly polished from contact and becomes shiny. |
Author: | GoodEnough [ Wed Jan 03, 2018 7:18 pm ] |
Post subject: | Re: Crosman piston seal wear |
Hacked up piston seals are common with Crosman. Check for galling inside the receiver tube, buttoning the piston will be a good solution. Replacement Crosman seals are inexpensive from Gravel or you can pay a little more for the Red seals - can't remember what gun (German IIRC) they are for but they do fit some Crosman guns. Before inserting piston with new seal, make a sleeve out of a cut - open pop can & insert this sleeve past the threading at the tube end; then slide seal/piston in the receiver tube. Cheers |
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