TM-9-2520-254-34 Direct Support for M113 TX100-1 Transmission 2520-00-066-4240 Download

Section XII. OVERHAUL (REBUILD) OF MAIN CONTROL VALVE ASSEMBLY 5-52. Description Refer to paragraph 2-11 for description of the main control valve assembly. 5-53. Disassembly (fig. 5-82) NOTE All items not covered in a through c below were removed from the transmission as outlined in paragraph 5-6, steps 4 through 13 (fig. 5-4 through 5-13). No further disassembly of those parts is required. a. Items Removed from Bottom of Control Valve Assembly. CAUTION Valve retainer (6) is spring loaded and must be held compressed while removing screws. (1) Place main control valve assembly (3) on a table with top side down. Remove two screws (4) and lockwashers (5) from retainer (6), and remove retainer, spring (7), and valve (8). (2) Remove six screws (9). (3) Remove bottom cover (10), detent spring (11), and ball (12). b. Items Removed from Front of Control Valve Assembly. (1) Remove two screws (13). CAUTION Inhibitor valve body (21) is spring loaded and must be held compressed while removing screws. (2) Remove screw (20), four screws (22), and washers (23) and remove inhibitor valve body (21). (3) Drive two dowel pins (19) from valve body (21), and remove two washers (16), two springs (15 and 17), and two inhibitor valves (18) from valve body. (4) Remove two springs (14 and 27) and two blocker plugs (28) from front cover (34). CAUTION Front cover 34 is spring loaded and must be held compressed while removing screws (24 and 25). (5) Remove three screws (24). (6) Remove front cover (34) but do not remove setscrew (33) from cover. (7) Remove plug (35) from cover (34). (8) Remove spring (36) and shift valve (38) from control valve body (42 ). (9) Remove spring (37), main regulator valve (40), and front governor valve (41) from valve body (42). (10) Remove throttle regulator spring (43) from valve body (42). 5-42 valve (39) and (11) Remove screw (25), cover (26), extender valve (29), springs (30 and 31), and ball (32). c. Items Removed from Rear of Control Valve Assembly. (1) Remove screws (61 and 63), and remove throttle valve retainer (64). Do not remove ad- justing screw (62) from retainer. (2) Remove throttle valve (44) from control valve body (42). Caution: Rear cover (60) is spring loaded and must be held compressed while removing screws. (3) Remove seven screws (59) from rear cover (60), and remove cover. (4) Remove trimmer valve (58), springs (56 and 57), plug (55), spring (54), trimmer stop (53), and spring (52). (5) Remove manual selector valve (45). (6) Remove shift plug (47) and shift valve (46) from valve body (42). (7) Remove shift plug (48) and shift valve (49) from valve body (42). (8) Remove shift plug (50) and flow valve (51) from valve body (42). 5-54. Cleaning Refer to paragraph 5-2 for cleaning recom- mendations. 5-55. Inspection and Repair Refer to paragraph 5-3 for general inspection and repair recommendations. Refer to paragraph 6-3 and table 6-3 for general wear limits information. 5-56. Assembly (Fig. 5-82) NOTE All items not covered in a through c below are installed as outlined in paragraph 5-58, steps 43 through 53 (fig. 5-126 through 5- 136). No overhaul (rebuild) of such components is required or recommended. NOTE It is absolutely essential that springs are not interchanged. Refer to table 6-2. a. Items Installed at Bottom of Control Valve Assembly. (1) Place main control valve assembly (3) on a table with top side down. Install manual selector valve (45) into valve body (42). (2) Install detent ball (12) and spring (11) in valve assembly, and install bottom cover (10). (3) Install six screws (9). Tighten screws to 24 to 36 pound-inches torque. (4) Install spring (7) and regulator valve (8) on retainer (6). Install two screws (4) and lock-