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12-11. MAINTENANCE OF BOLT ASSEMBLY

This task covers:

Disassembly/Cleaning/lnspection/Repair/Reassembly

INITIAL SETUP

Tools and Special Tools

Personnel Required

Tool Kit, Small Arms Repairman

MOS 76Y Supply Clerk/Unit Armorer

SC 5180-95-CL-A07

MOS 2111 Infantry Weapon Repairer

Tool Kit, Small Arms Repairman

(USMC)

USMC TAM No. E2900

Materials/Parts

References

Cleaner, Lubricant and Preservative (CLP)

TM 9-1005-201-10

(item 1, app D)

TM 08671A-10/1A

Wiping Rag (item 3, app D)

Equipment Condition

Bolt Assembly removed.

DISASSEMBLY

DISASSEMBLY

WARNING

Bolt must not be Interchanged with other M249 Machine Guns unless they have been headspaced by Direct Support Maintenance.

1. Position Bolt Assembly (1) in a protective jawed vise with Cam Lobe (2) in an up position.

CAUTION Extractor Pin (3), Extractor (4), Pin Guide (5), and Extractor Spring (6) are not to be reused.

2. Drive out Extractor Pin (3) and discard.

3. Remove Extractor (4), Pin Guide (5), and Extractor Spring (6) and discard.

M249 Extractor Pin

CLEANING

Remove dirt and corrosion from bolt using rag dampened with CLP. Lightly oil all parts except face of bolt after cleaning.

INSPECTION AND REPAIR

If Bolt Body (1) is damaged, notify Direct Support Maintenance. Minor pits are allowable around firing pin hole on Bolt Face (2). If Firing Pin Hole (3) is elongated, notify Direct Support Maintenance.

NOTE

Although initial extraction may occur, a chipped extractor claw can allow the cartridge case to escape Inside the receiver before ejection happens, which may cause a failure to chamber of the following round.

Military Cleaning Oil Clp

ARMY TM 9-1005-201-23&P MARINE CORPS TM 08671A-23&P/2A

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