This is the cocking 
lever pin, It just falls in an out is it supposed to be worn like this
Hw 77 repair?
- Thread starter UncleB
- Start date
You may go to a teal live auto parts and see if you can match up a roll pin to use or hard pins/ bearing rollers ( i saved up ) that could make a replacement?
Then email like air guns of Arizona with the part you need and see if they got one around ( they claim authorized hw service people)
www.gunspares.co.uk
Then email like air guns of Arizona with the part you need and see if they got one around ( they claim authorized hw service people)
Airgun Spares, Shotgun & Rifle parts for Air Arms, BSA, Crosman, Diana, Gamo, Relum, Webley, Weihrauch and more
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www.gunspares.co.uk Upvote 0
Man, that looks really worn, could of been defective to start with and it just worn out? 2k shots is nothing for a Great made gun like that. Good luck.
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???.. from rust ,no lube , poor qc of steel used , hole / pin misdrilled to spec size, over all id say just binding .. your good / better off if the pin took all the damage and did not waller out the linkage hole. You can make / buy a pin far easier then new linkage
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Hey uncleB, you might want to send it to John in PA and have him give it a tune while he has it. He is quite good at what he does!
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A low profile 5mmx10mm shoulder bolt from McMaster Carr should fix that right up. That is a far more robust way to attach the cocking lever than a rivet pin.
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Another question, when I tighten the stud up it lock’s up the linkage to reset the safety. It was not tight when I took the gun apart. Is there a means to get this tight without crushing the safety linkage? Is it supposed to bottom out in the hole so it doesn’t crash the linkage?
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Maybe use red loctite and snugg it where you find best with out crushing and let the loctite set.. .
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Under that stud should be a silver spacer ring to alow the linkage to slide. Only the bottom part of the anti-bear trap linkage is meant to slide. It blocks the trigger from from releasing when you're loading the gun. Make sure it's working properly when you are done.
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Stay with a softer steel pin than the lever/barrel. If the pin was harder then the wear would be on the gun. I would replace it with a factory part.
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I think having it properly lubed is probably more important than the hardness. I'm surprised that pin wore so badly, so quickly in the first place. I've never seen that pin or linkage wear so badly. I would just replace it with the factory pin and lube it properly.
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It's hard to get a traditional grease in there without packing it in there and making a mess of it. An occasional drop of thick clingy non-detergent oil would do fine.
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After looking at your original picture again your pin was spinning on its ends in the ears of the linkage. It's supposed to be peened tight to those ears and the single arm rotate around the pin. Make sure there's adequate clearance for the pin in the single arm linkage. Also make sure it's hole is smooth and clean.
Something caused the pin to rotate in the side ears when it shouldn't. Hopefully the holes in the ears aren't opened so much that you can't properly fit a new pin. If it is you can either drill the linkages for an oversized pin or replace the linkage with the worn holes
Something caused the pin to rotate in the side ears when it shouldn't. Hopefully the holes in the ears aren't opened so much that you can't properly fit a new pin. If it is you can either drill the linkages for an oversized pin or replace the linkage with the worn holes
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