pietta colt .44 navy revolver is stuck and won't disassemble


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chandler41
February 22, 2014, 08:51 PM
I found a colt .44 navy revolver replica (pietta) at an estate sale that is stuck and will not disassemble. It appears in good shape and I cannot find any rust on it. The wedge came out ok and the loading lever works ok but I cannot remove the barrel and the hammer will not quite make it to the half cock position. Also, the cylinder will not move. What can I do to alleviate this problem?

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rcmodel
February 22, 2014, 09:16 PM
Penetrating oil soak on the cylinder arbor / cylinder joint.
Heat the cylinder with a heat gun.

The cylinder is rusted on, or stuck on the arbor with old dried oil.

Do Not continue to try to cock it or you will break the lock work.

rc

chandler41
February 23, 2014, 02:52 PM
Thank you. Is there any type of oil that you recommend? When should I heat the cylinder? Before the soak, after or intermittently during the soak?

Thanks

rcmodel
February 23, 2014, 02:58 PM
kroil, or Liquid Wrench.

Try the heat-gun first.
If it's dried oil or grease that might do it.

rc

BBBBill
February 23, 2014, 06:16 PM
50/50 mix of acetone and ATF has been recommended by some as superior to Kroil, which has been my go-to. I've not had a need to try it yet.

Chawbaccer
February 24, 2014, 12:44 PM
Put a stick of wood across the cylinder face and run the rammer on it, accepted way to remove the barrel from a colt.

raubvogel
March 2, 2014, 10:43 AM
I wonder if those ultrasound bath thingies would help

Dmitri Popov
March 2, 2014, 12:40 PM
Use a heated ultrasonic cleaner with an appropriate cleaning solution first. They are very gentle on metal and finish, but do an excellent job of getting deep into small crevices and working out loose stuff.

Dframe
March 2, 2014, 01:30 PM
Kroil or other penetrant oil soaking the barrel arbor area well, then often you can tap on the back of the barrel first one side then the other with a plastic mallet or tap it with a sturdy plastic wedge and a hammer. Patience is your friend here. Don't become too enthusiastic with the hammer. Eventually the barrel will move foreward and off the arbor. There are two small pins at the bottom of the frame that index into the bottom of the barrel. Take care not to break them by hammering anthing sideways on the gun. Once the barrel is removed the cylinder should be relatively easy to remove. Clean everything thoroughly and reassemble with a non petroleum based lube. I like Bore Butter, but any black powder specific lube will do.

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