TM-9-2520-234-35 Technical Manual for M109 Transmission XTG-411-2A Download
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*C2 *C2 *C2 PAR 72-73 DISASSEMBLY CHAP 5, SEC II (2) Inspect the edges of all valve lands. All edges should be square and sharp. Do not destroy these sharp edges in cleaning or re- pair operations. The sharp edges help prevent the accumulation of substances which might cause the valve to stick in its bore. (3) Remove burs with a soft honing stone. Reclean valves if necessary to remove gum or dirt deposits. Discard defective valves. o. Sheet Metal Parts (1) Inspect sheet metal parts for bends, cracks, distortion, interference with adjacent parts, and loose-welded points. (2) Straighten bent parts. Weld cracks or loose welds. (3) Discard governor oil collector ring if any damage is evident. p. Threaded Inserts (1) Inspect insert for aged threads and burs. stripped or dam- (2) If necessary to remove an insert, the bolt which was removed from the insert can be used with a nut of the same size. (3) Grind a shoulder on one end of the nut wide enough to allow the nut to seat against the insert and not contact the adjacent mount- ing surface. (4) Thread the nut onto the bolt, shoul- der side of the nut away from the bolt head, and install the bolt into the insert to be re- moved. (5) Lock the bolt to the insert by tighten- ing the nut against the insert. Turn the bolt to remove the insert. q. Dowel Pins (1) Inspect pins for excessive wear, bending or burs. (2) Remove burs and minor surface ir- regularities with crocus cloth or a soft honing stone. Discard pins with other defects. (3) To remove a dowel pin, drill and tap a hole in the dowel to be removed. (4) Obtain a sleeve which will extend about an inch above the top of the dowel when the sleeve is placed over the dowel. The sleeve must have square ends and the inside diameter of the sleeve must be slightly larger than the outside diameter of the dowel pin. (5) Place the sleeve over the dowel to be removed and install a washer on the sleeve. (6) Using a bolt and nut the same size as the threaded hole in the dowel, install the nut on the bolt and thread the bolt into the dowel pin. (7) Hold the bolt and turn the nut against the washer to remove the dowel. Section II. DISASSEMBLY OF POWER TRAIN INTO SUBASSEMBLIES 73. GENERAL, a. This section presents the complete disassembly of the XTG-411-2A transmission, input transfer assembly and output drive as- semblies. The disassembly procedures are presented in pictorial step-by-step illustra- tions. Directly beneath each picture are simple disassembly instructions, keyed to the pictures by letter callouts. b. Refer to figs. 373 through 386 (fold- outs 2 through 15 in back of manual) for parts identification and location. c. Drain the transmission oil. Refer to TM 9-2300-216-10 for draining procedures 77