MAINTENANCE AND REPAIR
30. PREVENTIVE MAINTENANCE (figs. 11, 12, and 13).
a. These instructions may be carried out by the using arms.
b. Tighten all screws and nuts to prevent their becoming loose in service. This should be done periodically when the weapon is in service. Clean all rust and pitted surfaces with CLOTH, crocus, and repaint with ENAMEL, synthetic, olive-drab, lusterless.
a. The following operations must be performed by a company mechanic or ordnance maintenance personnel.
b. Solder all loose or broken soldered connections.
c. Replace any defective bulbs.
d. Remove dents in the barrel by using the tools shown in figures 17 and 18. These tools should be improvised by the ordnance machinist.
(1) Drive the small dent remover (fig. 17) through the barrel. This will increase the diameter of the dented part of the barrel up to 2.187 inches.
(2) Drive the large dent remover (fig. 18) through the barrel. This will bring the diameter of the dented part of the barrel back to the original 2.369 inches.
(3) To restore the original round contour of the barrel, force the dent remover in place under the dents. Using the dent remover as an anvil, hammer the outside surface of the barrel with a ball-peen hammer.
|Figure 17 — Small Dent Remover|
|Figure 18 — Large Dent Remover|
e. Replace the trigger assembly if the trigger spring is too weak or if trigger stop is missing.
f. If tail latch does not function, replace the tail latch spring.
g. Replace the trigger grips if broken or cracked so that moisture cannot get in.
h. If the bar contact is deformed, it may be bent to its proper shape to enable firing of the launcher. This should be replaced as soon as practicable.
i. If electrical contact points are corroded, clean with CLOTH, crocus.