TM-9-2520-234-35 Technical Manual for M109 Transmission XTG-411-2A Download
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CHAP 5, SEC X STEER VALVE BODY ASSEMBLY-REBUILD PAR 111-116 Section X. STEER VALVE BODY ASSEMBLY–REBUILD t. Install plug 42, if removed, into oil transfer plate 43. Torque plug 42 to 35-50 pound-inches. 112. DESCRIPTION Refer to par. 20 for the description of the steer valve body assembly. 113. DISASSEMBLY (fig. 382, fold-out 11) a. Remove retaining rings 22 an 23 from steer shaft assembly 45. b. Remove steer indicator 21 and preformed packing 20. c. Remove steer shaft assembly 45, detent ball 43 and spring 42. d. Remove steer valve cover plugs 31 and 32. e. Remove the right- and left-steer valve assemblies 24 through 30 and 33 through 39, as assemblies. f. Do not disassemble steer valve assemblies unless parts replacement is necessary. If necessary, hold the slotted end of the steer valve stem 25 or 38 with a screwdriver and remove nut 30 or 33 from the opposite end. g. Remove stem 25 or 38 and the steer regulator valve 26 or 37 from the steer valve 29 or 34. h. Remove seal 24 or 39 from stem 25 or 38. i. Remove internal valve spring 28 or 35 and external valve spring 27 or 36. j. Using a 9/16-inch wrench, remove eight cap screws 8 and lock washers 9 re- taining steer valve cover 10. Remove cover 10 and gasket 11. k. Remove two steer pressure regu- lator valve springs 12 and 13. l. Remove steer pressure regulator valve assembly. 14. 114 Change 2 m. Deleted. n. Do not remove tube 41 from steer valve body 40 unless replacement is necessary. If necessary, collapse the tube and remove it from the valve body. o. Do not remove needle bearings 19 and 44 from steer valve body 40 unless replacement is necessary. If necessary, drive the bearings from the valve body. 114. CLEANING Refer to par, 71 for cleaning recom- mendations. 115. INSPECTION AND REPAIR Refer to par. 72 for general inspec- tion and repair recoin inundations. Repair and rebuild points of measurement for fits, clearances and wear limits are indicated by small, lower case letters in fig. 382, fold-out 11. Refer to par. 245, for wear limits information. 116. ASSEMBLY (fig. 382, fold-out 11) a. If needle bearings 19 and 44 were removed from the steer valve body, install new bearings, pressing against the num- bered side of the bearing cage. Press bearing 19, from the top side of the valve body, 0.200-inch below the surface ad- jacent to the bearing bore. b. Install bearing 44, from the bot- tom side of the valve body, 0.150-inch below the surface adjacent to the bearing bore. c. If tube 41 was removed from steer valve body 40, install new replacement. Press tube into body, 0.241-0.251 inch below the machined mounting surface of the valve body. d. Deleted. e. If the two steer valves, removed as assemblies (24 through 30 and 33 through 39), were disassembled, install the internal valve spring 28 or 35 and external valve spring 27 or 36 into steer valve 29 or 34.