TM-9-2520-234-35 Technical Manual for M109 Transmission XTG-411-2A Download
Page 143 of 323
PAR 100-103 MAIN-PRESSURE REGULATOR AND CHAP 5, SEC VIII LOCKUP SHIFT VALVE ASSEMBLY–REBUILD 100. INSPECTION AND REPAIR Refer to par. 72 for general inspec- tion and repair recommendations. Repair and rebuild points of measurements for fits, clearances and wear limits are indicated by small, lower case letter in fig. 373, fold-out 2. Refer to par. 236 for wear limits information. 101. ASSEMBLY (fig. 373, fold-out 2) a. Install new replacement inserts 137, 140, 112, 113 and 122 from 0.005-inch to one turn below the housing surface. b. If 1-inch plug 114 was removed, install it. Torque plug 114 to 70-90 pound- feet. If 1/8-inch plug(s) 115, 116 or 131 were removed, install them. Torque plugs 115, 116 and 131 to 50-60 pound-inches. If l/4-inch plug(s) 117 or 123 were re- moved, install them. Torque plugs 117 and 123 to 96-120 pound-inches. If 1/16- inch plug 9 was removed, install it. Torque plug 9 to 35-50 pound-inches. c. Install sleeves 119, 120, 134 and 136, pressing them until they are firmly seated against the housing. d. If input transfer drive gear bearing support sleeve 139 was removed, install new replacement as follows: (1) Mark the locations of the three original pin holes, in the sleeve bore, on the bolt hole circle of the housing. (2) The pin holes to be drilled for the new sleeve should be located 60 degrees clockwise or counterclockwise from the original pin holes. The two alternate pin locations are indicated by the broken line in fig. 151. Note. Be sure that the pin holes to be drilled do not interfere with the oil holes located on the knit hole circle (fig. 151). (3) Install sleeve 139 (fig. 373, fold-out 2), pressing it flush with the hous- ing outer surface. (4) Using a 0.1855-0.1875 drill, drill a hole 0.410 to 0.470-inch deep at one of the alternate locations chosen. This hole should be 0.250-inch inward from the cover mounting surface and at a 30 degree angle to the cover mounting surface. Ref- er to figure 151. (5) Drill the remaining two dowel pin holes, spacing them 120 degrees apart. (6) Install the three pins (fig. 151), driving them 0.005 to 0.015-inch be- low the sleeve surface. (7) Line bore sleeve 139 (fig. 373, fold-out 2) to 7.0864-7.0876 inches diam- eter, with a finish of 100 RMS (fig. 151). e. Install the power take-off cover (fig. 150) and gasket. Secure the cover with ten 3/8-24 x 1-1/4 bolts and lock washers. Torque the bolts to 33-40 pound- feet. Section VIII. MAIN-PRESSURE REGULATOR AND LOCKUP SHIFT VALVE ASSEMBLY–REBUILD 102. DESCRIPTION c. Remove seal ring 8 from plug 7. Refer to par. 22 for the description of d. Using a l/2-inch socket wrench, the main-pressure regulator and lockup remove six bolts 29 and lock washers 28 shift valve assembly. retaining valve cover assembly 23. 103. DISASSEMBLY (fig. 383, fold-out 12) e. Remove cover assembly 23 and gasket 22. Remove plug 19 from cover a. Remove retaining ring 6 that re- assembly 23. tains valve retainer plug 7. f. Remove lockup shift valve spring b. Remove plug 7, valve 9 and spring 27 and valve 26. 10. Change 2 111