Install two rear sight catch springs (3) and two rear sight catches (2) in rear sight slide (4) securing with two headless straight pins (1).
Place the complete slide assembly on a rigid surface. Using a 1/8 inch punch, slightly peen the top of the headless straight pin (1) until it will not slide through the pin hole in the rear sight catch (2). Peen the opposite end of headless straight pin (1). Headless straight pin (1) must protrude through both sides of the rear sight catch (2).
This chapter contains information and instructions for the repairman to help keep the machine gun in good repair. This chapter consists of repair parts, special tools, and support equipment, troubleshooting, and maintenance procedures.
COMMON TOOLS AND EQUIPMENT. For authorized common tools and equipment refer to the Modified Table of Organization and Equipment (MTOE) applicable to your unit.
SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT. Special tools are listed in WP 0042 00 of this manual. Tools and test equipment are listed in WP 0042 00 of this manual. There is no TMDE for the item.
REPAIR PARTS. Repair parts are listed and illustrated in the repair parts and special tools list (WP 0044 00 through WP 0071 00) covering unit and direct support maintenance for this equipment.
Table 1. TROUBLESHOOTING PROCEDURES
Failure to cock or runaway gun. MALFUNCTION
Defective or broken parts in trigger (1), sear (2), or sear spring (3). CORRECTIVE ACTION
Replace trigger, sear, or sear spring (WP 0031 00 or WP 0032 00).
Safety does not function. MALFUNCTION
Safety (3) fails to hold positively in either the "S" (1) or "F" (2) position. CORRECTIVE ACTION
Replace (WP 0031 00 or WP 0032 00).
Table 1. TROUBLESHOOTING PROCEDURES (cont)
Gun ruptures cartridge cases. MALFUNCTION
Check headspace (WP 0038 00). CORRECTIVE ACTION
Replace barrel (1) (WP 0024 00), bolt assembly (2) (WP 0030 00), or both. If weapon fails headspace test (WP 0038 00) after parts are replaced, the weapon is unserviceable.
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