TM-9-2350-311-34-2 Maintenance Manual for Volume 2 M109 Cab Download
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TM 9--2350--311--34--2 2--10 Change 3 2--8 DISASSEMBLY AND ASSEMBLY PROCEDURES — CONTINUED CAUTION Never scribe-mark bearing surfaces. Mark gears on mating teeth by scribe marks, or with dye, indelible ink, or paint, to be certain of correct positioning at assembly. Use of chalk or crayon for marking should be avoided because of lack of permanence. During assembly, subassemblies should be assembled first, combined into major components where possible, and then installed to form a complete component. Records to provide repair and replacement data and statistics should be carefully prepared and maintained according to DA PAM 750--8. 2--9 CLEANING Refer to TM 9--247 for instructions on cleaning and for necessary cleaning materials. Also refer to TM 9--2350--311--10 and TM 9--2350--311--20--2 for specific areas to be cleaned. WARNING Breathing vapor from degreasing solutions can cause headache, dizziness, loss of muscular control, coma, permanent brain damage, or death. Make sure area is well ventilated as a preventive measure. a. Cleaning of Materiel Received from Storage Materiel received by support maintenance units from storage will be cleaned by dip-tank, vapor-degreaser, or steam method, whichever is applicable or available. Descriptions of these methods follow. If some time is to elapse before the start of repair operations, apply a coating of CLP (item 11, Appx B) to all finished metal surfaces to prevent rusting. CAUTION Do not immerse sealed-typed ball bearings in cleaning compound (item 11.1, Appx B) or hot oil. 1 Dip-tank method. Disassemble as required. Using rubber gloves, place parts in a perforated metal basket, submerge, and agitate in a tank containing cleaning compound (item 11.1, Appx B). 2 Vapor-degreaser method. Tanks containing a heated solution of trichlorethylene or perchloroethylene (Type II) are used for degreasing items that are very greasy or oily and are not readily cleaned by dip-tank method. Place parts in a perforated metal basket, and submerge just below the vapors in the tank, keeping the basket in this position until all of the grease, oil, or dirt melts and runs off the parts. If necessary, materiel may be washed with degreasing spray unit.