TM-9-2350-358-BD M109A6 Battlefield Damage Assessment and Repair Download
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TM 9-2350-358-BD 11-2. ASSESSMENT PROCEDURE - CONTINUED Table 11-2. Hydraulic System Operation Assessment ATTEMPT OPERATION INOPERATIVE: Mode selector valve .................................................... para 11-15 Hydraulic fuze manifold ............................................... para 11-15 Manual elevation hand pump ...................................... para 11-15 Equilibration hand pump ............................................. para 11-15 Determine if: No problem found Damage can be repaired Damage cannot be repaired - Note repair requirements - Note extent of damage repair requirements Go to Table 2-3 Evaluation of Performance Capability Operation observation is complete. Return to Table 2-2 to continue operation assessment. 11-3. REPAIR PROCEDURE INDEX PARA Hydraulic fluid substitution....................................................................................................................................... 11-6 Preformed packing leakage .................................................................................................................................... 11-7 Metal tube bending .................................................................................................................................................. 11-9 Hydraulic tube and hose repairs (low pressure). ..................................................................................................... 11-10 Hydraulic tube and hose repairs (high pressure) .................................................................................................... 11-11 Hydraulic high-pressure tubing repairs (permaswaging) ......................................................................................... 11-12 Hydraulic tube and hose Isolation ........................................................................................................................... 11-13 Mode selector valve isolation . ............................................................................................................................... 11-15 Hydraulic fuze manifold isolation. ............................................................................................................................ 11-15 Equilibration hand pump isolation............................................................................................................................ . 11-15 Manual elevation hand pump isolation .................................................................................................................... 11-15 Manual elevation and equilibration hand pumps isolation ....................................................................................... 11-15 SECTION II. PROCEDURAL INFORMATION 11-4. GENERAL BDAR for a hydraulic system is generally confined to component replacement, expedient line repairs, or bypassing damaged lines. If a hydraulic circuit cannot be repaired, it may be necessary to isolate it (cutting it off) from the system to permit operation of some other hydraulic functions. Damage to the hydraulic system almost always requires replenishment of lost fluids. 11-2