MK III ROCKET LAUNCHER TESTER

the detent. A spring-loaded firing contact (fig. 2-20) is located in the end of each tube. The principles of operation for the 2.75-inch launcher are basically the same as the 5.0-inch launcher. The 2.75-inch launcher can be loaded with less than 7 or 19 rockets when tactical requirements exist. However, you should refer to the specific tactical manual and aircraft-loading manual. Also, since the rockets are fired in a definite sequence, the rockets must be loaded into the launcher tubes in the proper sequence. Airborne rocket loading procedures, including electrical test procedures, are covered later in this manual. MK III ROCKET LAUNCHER TESTER Perform the self-test of the Mk III Rocket Launcher Tester (fig. 2-21) prior to loading launchers in accordance with NAVAIR 17-15MDA-40. 2-19 Figure 2-20.—Launcher firing contact assembly (2.75-inch launcher). J3 POWER CABLE RECEPTACLE J2 SELF-TEST AND TESTING J4 SELF-TEST AND TESTING BINDING POSTS FIRE TEST SWITCH FIRE TEST INDICATOR GROUND TEST INDICATOR BATTERY CHECK INDICATOR J1 SELF-TEST FUZE (BATTERY CHARGINH) GROUND TEST SWITCH BATTERY CHECK SWITCH POWER CABLE W1 COILED CABLE W3 COILED CABLE W2 COILED CABLE W4 AOf0221 Figure 2-21.—Mk III Rocket Launcher Tester with cables.