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Work order — Tokarev SVT-40

Taking the firearm apart for a job such as refinishing, and putting it back together to specification. Generated from the Pew-Takedown entry last updated 2026-10-29. Confidence: medium.

Shop difficulty: Tier 3 of 3

A complex WWII gas rifle: detachable gas regulator and piston, a two-piece recoil spring that is held compressed while the second half goes in, an extractor plunger that is hard to depress, and a trigger group owners describe as very hard to click back in. Several tensioned parts plus reported misery put it at Tier 3. 63 parts (complete Tokarev SVT-38/SVT-40 self-loading rifle per the Gun Digest exploded drawing legend 'Tokarev Model 38 and 40' (courtesy of Blacksmith Corporation), keys 1-63: muzzle brake and gas regulator, ). Pew-Takedown's rating, not the manufacturer's.

Bench time: strip ~60 min, rebuild ~90 min (estimate). Actual: strip ______ rebuild ______

Special tools:

• brass drift — Trigger-guard latch plunger
• rubber mallet / wood block — Seating the trigger group (owners' method)
• SVT regulator tool (cleaning kit) — Gas regulator

Watch for:

• The trigger group is very hard to snap back into the receiver and stock. Owners use a dowel and mallet or a hard palm strike. (reassembly; Canadian Gun Nutz)
• The recoil spring is two springs on a telescoping rod. The inner half has to be held compressed by hand while the outer half is brought in. (both; Canadian Gun Nutz)
• The trigger-guard latch plunger often will not depress to release the group on first strip, especially with cosmoline. (disassembly; Canadian Gun Nutz)
• The extractor plunger in the bolt is hard to depress to free the extractor. (both; Canadian Gun Nutz)

1. Clear and make safe

1. Point the muzzle in a safe direction and keep your finger off the trigger.
2. Place the selector on safe.
3. Press the magazine release and remove the magazine.
4. Pull the charging handle fully to the rear and lock the bolt back if the rifle has a hold-open.
5. Inspect the chamber and magazine well with a light, then physically confirm the chamber is empty.
   Warning: Look and feel. Both, every time.
6. Remove all live ammunition from the work area.

2. Disassemble

Field Strip

1. Complete the Clear and Make Safe procedure.
2. Depress the receiver cover catch at the rear of the receiver and remove the cover.
   Warning: The recoil spring assembly is compressed beneath it.
3. Withdraw the recoil spring assembly.
4. Pull the bolt carrier fully rearward and lift the carrier and bolt out of the receiver.
5. Separate the tilting bolt from the carrier.
   Tip: The SVT uses a tilting bolt, not a rotating one. Note its orientation.
6. Remove the gas plug and withdraw the gas piston and its spring from the gas cylinder, noting the regulator setting before you disturb it.
   Warning: Record the regulator setting so you can return it.

3. Refinish

The components the procedures above separate. Coating, masking and cure are outside this database; follow your coating system's instructions. A part the manufacturer marks "factory fit" should not be swapped or reworked.

No manufacturer statement of materials or finish is recorded. Identify each part's material before choosing prep and cure.

4. Reassemble

Reassembly

1. Reinstall the gas piston, spring, and plug, returning the regulator to its recorded setting.
2. Fit the bolt to the carrier in its correct orientation.
3. Set the carrier and bolt into the receiver rails and slide them forward.
4. Insert the recoil spring assembly and seat it.
5. Fit the receiver cover and press it down until the catch engages.
   Warning: Confirm the cover is latched.
6. Cycle the action several times and perform the function check.

5. Torque

No manufacturer torque values are recorded for this firearm.

Fit or check on rebuild

• Gas regulator back to recorded setting — A wrong setting batters the rifle or stops it cycling.
• Function check (safety, trigger reset, feeding, extraction) — Standard after any detail strip. No single source.
• Re-zero sights or scope — Sights and optics come off for coating, and point of impact must be re-confirmed. This is a standard check, so no source.

6. Function check

• Verify the rifle is unloaded with no magazine inserted before each step.
• Cycle the action by hand and confirm the bolt locks and returns fully to battery.
• With the selector on safe, press the trigger. The hammer must not fall.
• Move the selector to fire, cycle the action, and press the trigger. The hammer should fall.
• Hold the trigger back, cycle the action, and release slowly to feel the disconnector reset.
• Confirm the magazine seats and locks positively and any hold-open engages on an empty magazine.
• Confirm the receiver cover is latched and the gas plug is fully seated.
• Confirm the gas regulator is on a known setting before firing.

If any check fails, the firearm is not safe to fire. Stop and see a licensed gunsmith.

Sources

1. 7.62mm Tokarev Self-Loading Rifle Model 1940 Manual — USSR People’s Commissariat of Defence primary
2. Small Arms Identification and Operation Guide — Eurasian Communist Countries — U.S. Defense Intelligence Agency secondary
3. SVT-40 trigger pack reassembly problem — Canadian Gun Nutz anecdotal
   https://www.canadiangunnutz.com/forum/goto/post?id=9704812
4. Mechanical Problems with SVT 40's? (page 3) — Canadian Gun Nutz anecdotal
   https://www.canadiangunnutz.com/forum/threads/mechanical-problems-with-svt-40s.1349612/latest
5. Svt 40 noob question — Canadian Gun Nutz anecdotal
   https://www.canadiangunnutz.com/forum/threads/svt-40-noob-question.1081270
6. SVT-40 Bolt Disassembly — Canadian Gun Nutz anecdotal
   https://www.canadiangunnutz.com/forum/goto/post?id=7328482
7. The Gun Digest Book of Exploded Gun Drawings (975 isometric views) — Tokarev 'Model 38 and 40 Bolt-Action Rifle' — Gun Digest Books / Krause Publications (scan on archive.org) secondary
   https://archive.org/download/the-book-of-exploded-gun-drawings-975-isometric-views/The%20Book%20of%20Exploded%20Gun%20Drawings%20-%20975%20Isometric%20Views.pdf

Educational guide only. Some information comes from non-authoritative sources. Always consult your manufacturer's manual and a licensed gunsmith. Verify your firearm is unloaded before every procedure. Full disclaimer: https://github.com/Fundamental-build-LLC/Pew-Takedown

Legal notice: this material is third-party information compiled from sources of varying reliability and is provided for general informational and educational purposes only. It is not gunsmithing, technical, safety or legal advice, it is not verified or endorsed by any manufacturer, and it must not be taken as fact. Any work on a firearm beyond the routine field stripping described in its own owner's manual should be performed only by a licensed and insured gunsmith. You use this material entirely at your own risk. Fundamental Build LLC and the project's contributors make no warranty of any kind and accept no liability for death, injury, damage or loss arising from its use. Full terms: LEGAL.md.