Best left to a gunsmith.
Search on youtube for Winchester 1300 assembly, they are internally the same.
I recommend the Gun Digest series of books on firearms assembly and disassembly. Amazon, among others, sells the individual books (Part V deals with shotguns).
This requires the services of a gunsmith.
You need to take it to a competent gunmsith
yes they are one in the same
Yes, but ejector spring may need modification- slight change in slot for spring.
If you removed the bolt, you probably lost the ejector spring. A new one can be had from Numrich Gun Parts. To replace the ejector spring, remove the bolt, and take out the spring from the bottom of the receiver just behind the ejector port.
no. the bolt is push feed with a button ejector and plate extractor vs. a standing blade ejector and mauser style claw extractor in the pre 64's.
You should be able to find a assembly-disassembly guide for your Winchester model 37 on E-bay.If not you may to need to visit a qualified gunsmith.
To disassemble a Model 77 .22 caliber rifle, first ensure the firearm is unloaded and remove the magazine. Take out the bolt by pulling the bolt handle fully back and lifting it out of the receiver. To replace the ejector, remove the rear action screw and separate the stock from the action, then access the ejector by unscrewing it from the bolt. For the extractor, carefully pry it out of the bolt and replace it with the new one, ensuring proper seating before reassembling the rifle.
To repair the ejector on a Western Field 12 ga Model ENH-560-8A shotgun, first ensure the firearm is unloaded and safe to work on. Disassemble the shotgun by removing the trigger group and bolt to access the ejector. Inspect the ejector for wear or damage, clean it thoroughly, and replace any broken parts if necessary. Reassemble the shotgun and test the ejector function by cycling dummy rounds to ensure proper operation.
Brownells gunsmithing should have a wrench that fits your Winchester model 12 end nut. this site is available on the web.