Mk 19 Alignment Guide Assembly

Install a new spring pin each time the old spring pin is removed.

a. Position the drive lever lock (1) on the vertical cam (2), so that the curved step on the drive lever lock is upward as shown.

b. Place the two ends of the drive lever lock in a vise. This keeps the ends of the lock from bending during step c.

c. Using the hammer, tap a new spring pin (3) into the aligned holes on one side. Guide the pin as you continue to tap it in, until the pin enters the aligned holes on the other side of the drive lever lock. Ensure the pin is flush on both ends.

d. Install the vertical cam assembly in the receiver.

1

END OF WORK PACKAGE

UNIT

MK 19 MOD 3 40 MM MACHINE GUN (NSN 1010-01-126-9063) UPGUNNED WEAPONS STATION MK 19 40 MM MACHINE GUN (NSN 1010-01-362-6513)

MAINTENANCE OF MK 19 MACHINE GUN ASSEMBLY - ALIGNMENT GUIDE ASSEMBLY -

REMOVAL/INSTALLATION REMOVAL, INSPECTION OF INSTALLED ITEMS, INSTALLATION

INITIAL SETUP:

Tools and Special Tools

Tool, combination assembly (PN 3269494) Tool kit, small arms repairman

SC 4933-95-CL-A07 with addition of SL-3-00607A) Tool kit, small arms repairman, SC-5180-95-CL-A07

REMOVAL

1. REMOVE ALIGNMENT GUIDE ASSEMBLY.

a. Depress the tip of the alignment guide flat spring with a screwdriver tip or your fingernail and slide alignment guide assembly left and out of the receiver. Slide the alignment guide assembly out of the receiver, pulling the assembly slightly rearward.

INSPECTION OF INSTALLED ITEMS

1. GENERAL.

a. Inspect the alignment guide assembly while assembled. Do not disassemble unless parts replacement is necessary. Ensure the shoulder screw (1) and alignment guide flat spring (2) do not move relative to each other. It is permissible for the shoulder screw and flat head screw to turn together as long as the alignment guide flat spring is not loose. Inspect for thread damage (3). If damaged, evacuate to Direct Support Maintenance.

2. ALIGNMENT GUIDE FLAT SPRING.

a. Inspect the alignment guide flat spring for cracks. If damaged, evacuate to Direct Support Maintenance.

1LK134

Tools and Special Tools - Continued

Tool set, intermediate maintenance, SL-3-08669A (Marine Corps only) Tool set, organizational maintenance, SL-3-08668A (Marine Corps only)

INSTALLATION

1. INSTALL ALIGNMENT GUIDE.

a. Depress the tip of the alignment guide spring as you slide the alignment guide assembly into the forward part of the receiver. Ensure the large hole slides over the ogive plunger assembly and that the alignment guide pin mates with the keyhole in the receiver.

END OF WORK PACKAGE

UNIT

MK 19 MOD 3 40 MM MACHINE GUN (NSN 1010-01-126-9063) UPGUNNED WEAPONS STATION MK 19 40 MM MACHINE GUN (NSN 1010-01-362-6513)

MAINTENANCE OF MK 19 MACHINE GUN ASSEMBLY - CHARGER ASSEMBLIES (RIGHT HAND/LEFT

HAND) - DISASSEMBLY/ASSEMBLY DISASSEMBLY, INSPECTION OF INSTALLED ITEMS, ASSEMBLY

INITIAL SETUP:

Tools and Special Tools

Lock plunger tool (WP 0091 00)

Tool, combination assembly (PN 3269494)

Tool kit, small arms repairman

SC 4933-95-CL-A07 with addition of SL-3-00607A (Marine Corps only) Tool kit, small arms repairman,

SC-5180-95-CL-A07 Tool set, intermediate maintenance, SL-3-08669A (Marine Corps only) Tool set, organizational maintenance, SL-3-08668A (Marine Corps only)

Materials/Parts

Cotter pin (item 3, WP 0125 00) Lubricant (as required) Self-locking nut (item 14, WP 0125 00) Slotted spring pin (item 21, WP 0125 00)

Equipment Condition

Bolt and backplate assembly removed from receiver (WP 0041 00).

Reference

WP 0091 00

DISASSEMBLY

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