Preventive Maintenance Checks And Services Cont Preventive Maintenance Checks And Services For Ma Rifle Cont

Item No.

Interval

Item to be Checked or Serviced

Procedure

Not Fully Mission Capable if:

Quarterly

Lower receiver and buttstock assembly (serviceability check)

Remove buffer assembly (1) and action spring (2) Check buffer assembly for cracks SH - Buffer assembly is cracked

Check action spring (2) for kinks and free length Free length should be RIFLE: 11 3/4 Inches (29 85 cm) minimum to 13 1./2 inches (34 29 cm) maximum

SH - If action spring is kinked or does not meet free length requirements

CARBINE: 10 1/16 inches (25.56 cm) minimum to 11 1/4 inches (28.58 cm) maximum. Do not attempt to adjust spring length

SH - If action spring is kinked or does not meet free length requirements

2-14 Change 3

Item

Interval

Item to be

Not Fully Mission

No.

Checked or

Procedure

Capable if:

Serviced

6

Quarterly

Lower receiver

Remove pistol grip screw (3), lockwasher

Components are

(cont)

and buttstock

(4), pistol grip (5), helical spring (6),

defective/damaged.

assembly

safety detent (7), pivot pin (8), pivot pin

(serviceability

detent (9), and helical spring (10). Clean

check) (cont)

and lubricate metal components. Also

clean and generously lubricate pivot pin

holes and spring/detent holes. Replace

defective/damaged components as

necessary.

Disengage takedown pin (11) and pull

Components are

out, push back in to re-engage takedown

defective/damaged.

pin (an audible click should be heard).

If an audible click is not heard, see page

2-57 for repair.

Item No.

Interval

Item to be Checked or Serviced

Procedure

Not Fully Mission Capable if:

6

Quarterly (cont)

Lower receiver and buttstock assembly (serviceability check) (cont)

Lubricate helical compression spring and takedown pin detent (11 ) by placing one drop of lubricant on takedown pin detent and lowering the buttstock assembly (12) to vertical position. Allow the lubricant to work Its way around the helical compression spring and takedown pin detent (11).

Check buttstock assembly(12) components for damage.

M16 Rifle Diagram
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