Pump Action Shotgun Internal Assembly

LUBRICATION - Continued

PINS (OTHER SIDE)

HOLE

WEAR PAD (INSIDE)

LOCK

OGIVE PLUNGER ASSEMBLY (SEE NEXT PAGE)

HOLE

WEAR PAD (INSIDE)

LOCK

PINS (OTHER SIDE)

OGIVE PLUNGER ASSEMBLY (SEE NEXT PAGE)

Shotgun Inside
FLAT SPRING PIN

BOLT AND BACKPLATE 'ASSEMBLY

DO NOT LUBE INTERNALLY

BACKPLATE TUBES

BOLT AND BACKPLATE 'ASSEMBLY

DO NOT LUBE INTERNALLY

Mk19 Sear Assembly

BACKPLATE TUBES

SEAR ASSEMBLY

INTERNAL COMPONENTS

SEAR ASSEMBLY

SEAR SHOULDER

CONTACT SURFACES

INTERNAL COMPONENTS

LUBRICATION - Continued

2. Sand and Dust. Brush a generous coat of lubricant on all critical points shown in the illustration. Upon assembly, pack more lubricant into the following areas:

a. Between the round positioning block (1) and forward receiver wall.

b. Between the alignment guide assembly (2) and forward receiver wall.

c. Under the primary pawl (3).

d. Under the charger handle locks and between the charger housing and receiver (4).

f. Inside the sear assembly, under the receiver sear, and inside the sear housing and receiver buffer bodies (6).

g. Between the feed throat plungers and receiver slots (7).

Apply lubrication to exterior surfaces and wipe off with a clean wiping rag.

3. Extreme cold. Subzero weather causes the lubricant to become thicker. In temperatures 0 degrees and below, use LAW after first cleaning all parts to remove previous lubricants. When using LAW, brush on a thin coat, especially on those parts cited in WP 0082 00, step 2. If the metal 'sweats' when the gun is brought indoors, field strip, wipe dry, then allow parts to return to room temperature before lubricating and reassembling.

4. Wet, salty conditions. Preserve and lubricate all surfaces generously to protect parts from rust.

Mk19 Parts
1LK305

END OF WORK PACKAGE

DIRECT SUPPORT

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 - BORESIGHTING INSTRUCTIONS

INITIAL SETUP:

Tools and Special Tools

Adapter assembly, 40 mm Boresight kit assembly, 40 mm MK 64 carriage and cradle assembly M3 tripod ground mount Tape measure

Target (see step 1 for fabrication instructions) Traversing and elevating (T&E) mechanism

BORESIGHTING INSTRUCTIONS

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