TM-9-2350-311-34-2 Maintenance Manual for Volume 2 M109 Cab Download
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TM 9-2350-311-34-2 9-2 NO-BACK BEARING -CONTINUED d. Installation NOTE If new shim(s) are to be installed, ensure that the required thickness was calculated. Refer to c. assembly, step 9. 1 Install shim(s) (8) on mechanical housing (9). 2 Install pin (13) and no-back bearing (12) on shouldered shaft (2), ensuring that lower woodruff key (16) on shouldered shaft alines with upper drive bearing (25) of no-back bearing. 3 Install woodruff key (11) and bevel gearshaft assembly (10) in mechanical housing (7), ensuring that wood- ruff key alines with lower drive bearing (26). 4 Install mechanical housing (7) with bevel gearshaft assembly (10) in mechanical housing (9). 5 Install six cap screws (6). NOTE Step 5 applies to only M109A4/M109A5 howitzers. 6 Install new seal (5), new preformed packing (4), and dust protective cap (3) on shouldered shaft (2). NOTE To fully seat preformed packing in M109A4/M109A5 traversing mechanisms, use handwheel as- sembly round nut to tighten dust protective cap against preformed packing. Upper woodruff key cannot be installed otherwise. 7 Install upper woodruff key (1) in shouldered shaft (2). 9-10 Change 2