Unissued SKS Cosmoline Removal

Published on August 12, 2011
Duration: 15:03

This video details the comprehensive process of removing cosmoline from an unissued Yugoslavian M59/66A1 SKS rifle. It covers disassembly, effective cleaning methods for both metal and wood components using solvents like brake cleaner and degreasers like Zep PowerHouse, and specialized techniques such as ultrasonic cleaning. Crucially, it emphasizes safety, particularly regarding the firing pin channel to prevent slam fires, and concludes with proper lubrication, reassembly, and test firing.

Quick Summary

To remove cosmoline from an SKS rifle's metal parts, use brake cleaner, which effectively dissolves the grease without harming the finish. For the wood stock, a heavy-duty degreaser like Zep PowerHouse or 'sun-sweating' in direct sunlight is recommended. Always clean the firing pin channel thoroughly to prevent dangerous slam fires.

Chapters

  1. 00:00Intro: Unissued SKS & Cosmoline
  2. 01:07Complete Rifle Disassembly
  3. 03:28Cleaning Metal Parts with Brake Cleaner
  4. 04:28Ultrasonic Cleaning for Small Parts
  5. 06:32Cleaning the Wood Stock with Degreaser
  6. 11:07Critical Safety: Firing Pin Channel
  7. 11:19Lubrication and Reassembly
  8. 12:47Sun-Sweating the Wood Stock
  9. 14:02Final Finishing and Reassembly
  10. 14:45Test Firing the Cleaned SKS

Frequently Asked Questions

What is the best way to remove cosmoline from an SKS rifle's metal parts?

For metal parts, brake cleaner is highly effective and affordable. Spray it liberally to dissolve the cosmoline, ensuring good ventilation and catching runoff. Follow up with a light oiling after degreasing.

How should the wooden stock of an SKS be cleaned of cosmoline?

Use a heavy-duty degreaser like Zep PowerHouse, spraying it onto the wood to draw out the cosmoline. For deeply embedded grease, place the stock in direct sunlight ('sun-sweating') to bring it to the surface for wiping.

What are the safety risks associated with cosmoline removal on an SKS?

The primary safety risk is leaving cosmoline in the firing pin channel. This can cause the firing pin to stick forward, leading to dangerous 'slam fires' where the rifle discharges automatically upon chambering a round.

Can I use an ultrasonic cleaner for SKS cosmoline removal?

Yes, an ultrasonic cleaner is excellent for small, intricate parts like the bolt, gas piston, and trigger assembly. Use hot water and a degreaser like Simple Green for efficient cleaning.

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