c. Check for cracks in areas indicated with arrows (around the Retaining Pin Holes and the radii of Cocking Handle Channel). If cracks exist, notify Direct Support Maintenance.
d. Check for bent Arm (8) on Cocking Handle Assembly (9). If bent, notify Direct Support Maintenance. Check cocking handle assembly for wear of the Feet (10) that travel inside the rails of the Cocking Handle Channel (4). Wear is difficult to determine, since the feet are internal to the channel. However, if the channel is not bulged or separated, wear on the feet of the cocking handle can be assumed and Direct Support Maintenance should be notified.
TEST OR INSPECTION
3. FAILURE TO FEED/STRIP.
Step 1 - Insufficient gas pressure. Check for caked carbon in Inlets (1), Outlet (2) of Gas Regulator (3). Clean as required.
DO NOT lubricate Gas Regulator (3).
Step 2. Check Feed Tray (4) for cracks, damaged or loose Rivets (5), and gouges in area (6).
Check for damaged, weak or worn operating parts in Cover and Feed Mechanism Assembly (7). If defective, notify Direct Support Maintenance.
Cover and Feed Mechanism Assembly (7) shown removed for clarity.
Step 3. Check for broken, improperly assembled, or missing Springs (8) under the Cartridge Guides (9). If defective, notify Direct Support Maintenance.
A fail to feed/strip can occur when the plastic feed strap of the 200 round magazine is not used and the operator incorrectly positions the first round of a partial belt on the feed tray.
Step 4. Check for damaged Driving Spring (10). Replace Driving Spring, if more than one broken strand is found on same coil or if more than two strands are broken regardless of location on entire spring.
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