TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
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TM 9-2350-311-10 G-3 LUBRICATION INSTRUCTIONS - CONTINUED 14. CHECK BALLS AND METERING HOLES (C) (11578385) NOTE There are two setscrews at the muzzle brake end of the bore evacuator. One setscrew is staked in place and should not be removed. It holds the bearing ball and spring in place. The second setscrew is not staked. Removal of this one will allow release of the bearing ball. a. Remove setscrew (38) from bore evacuator (39) NOTE If T-handle is not available, a screwdriver can be used to depress bearing ball. If bearing ball is stuck or spring appears broken, notify unit maintenance. b. Insert T-handle (40) into setscrew hole (41). Turn T-handle to engage with threads. Continue turning to depress ball and spring. c. Insert pry bar (42) into hole (43). With bearing ball depressed, unscrew bore evacuator (39) and slide it forward on cannon tube (44). Change 2 G-17