TM-9-2520-234-35 Technical Manual for M109 Transmission XTG-411-2A Download
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CHAP 5, SEC XIV OUTPUT PRESSURE OIL PUMP REBUILD PAR 132-136 Section XIV. OUTPUT PRESSURE OIL PUMP—REBUILD 132. DESCRIPTION Refer to par. 23 for the description of the output pressure oil pump. 133. DISASSEMBLY (fig. 384, fold-out 13) a. Using a screwdriver, remove two screws 15 retaining pump cover assembly 16. b. Remove cover assembly 16. c. Do not remove needle bearing 17 or dowel pin 18 from cover assembly 16 unless replacement is necessary. If necessary, drive the bearing or dowel pin out of cover 19. d. Remove oil pump drive gear 11 and idler gear assembly 12. e. Do not remove needle bearing 13 from idler gear 14 unless replacement is necessary. If necessary, press the bearing from the gear. f. Remove idler gear shaft 10 and ball 9 from pump body 8. g. Do not remove needle bearing 7 from pump body 8, unless replacement is necessary. If necessary, press the bearing from the body. 134. CLEANING Refer to par. 71 for cleaning recommen- dations. 135. INSPECTION AND REPAIR Refer to par. 72 for general inspection and repair recommendations. Repair and re- build points of measurements for fits, clear- ances and wear limits are indicated by small letters in fig. 384, fold-out 13. Refer to par. 247 for wear limits information. 136. ASSEMBLY (fig. 384, fold-out 13) a. If bearing 7 was removed from the pump body, install a new replacement. b. Pressing against the numbered side of the bearing cage, install bearing, from the outer side of the pump body, 0.060 to 0.100 inch below the surface adjacent to the bearing bore. c. If bearing 17 was removed from pump cover 19, install a new replacement. Press- ing against the numbered side of the bearing cage, install the bearing, from the outer side of the cover, 0.060 to 0.100 inch below the surface adjacent to the bearing bore. d. If dowel pin 18 was removed from pump cover 19, install a new replacement. Press pin in, from the inside of the cover, leaving 0.220 inch of the pin protruding. e. If bearing 13 was removed from pump idler gear 14, install a new replacement. Pressing against the numbered side of the bearing cage, install the bearing 0.060 inch below the side surface of the gear. f. Using a light coat of oil-soluble grease, place ball 9 onto pump idler gear shaft 10. g. Indexing ball 9 on shaft 10, with the slot in the shaft bore of the pump body 8, press the shaft into the body until it is properly posi- tioned. h. Install idler gea assembly 12 onto idler gear shaft 10. i. Install pump drive gear 11 into pump body 8. j. Install pump cover assembly 16 and secure with two screws 15. 120