TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
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TM 9-2350-311-20-1 2-15 PROCEDURES FOR SEMIANNUAL/ANNUAL SERVICES — CONTINUED ITEM NO. 24 25 TABLE 2-1 UNIT PMCS FOR M109A2/M109A3/M109A4/M109A5 HOWITZERS — CONTINUED INTERVAL Annual Annual ITEM TO BE INSPECTED Engine Mounting Base Road Wheels and Idler Wheels PROCEDURE Lubricate engine rear jaw mount screw (36) with GMD (item 47, Appx D). NOTE Reinstall powerplant (para 4-5). Check for cracks in wheel (37). Tighten nuts (36) to 160-200 Ib-ft (217-271 N·m). Measure road wheel wear as follows: a. Pull out threaded rod and place gage (item 22, Appx H) over road wheel as shown, backing off knurled knob as required. b. When gaging balls are in contact with wear ring and inside of wheel disk, slowly turn knurled knob clockwise until it just contacts rod housing. Do not tighten knob, since this will pull inner gage ball away from wheel disk (39). c. Pull rod back, without disturbing knob, until gage can be removed from wheel. NOT FULLY MISSION CAPABLE IF: Rear mount mounting base screw or jaw broken. Missing, bent, elongated, or cracked road wheel or idler wheel mounting 2-36