TM-9-2350-311-34-2 Maintenance Manual for Volume 2 M109 Cab Download
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TM 9-2350-311-34-2 m. Inspect for Emulsified Hydraulic Fluids Emulsified hydraulic fluid in hydraulic systems, characterized by milky color, can result from air becoming trapped in the fluid or from nitrogen leaking past piston seals. If milky hydraulic fluid is observed, drain, purge, and refill hydraulic system (TM 9-2350-311-20-2). Observe hydraulic fluid again after several days. If hydraulic fluid is again emulsified, repair defective cylinder. 2-4.2 Types of Inspection a. Initial Inspection Initial inspection information is included to aid maintenance personnel in determining cause of unserviceabil- ity, extent of repairs, and an estimate of replacement parts needed. b. Maintenance Shop Inspection In the event materiel is received in a maintenance shop for repair without complete information regarding deficiencies, perform a complete maintenance shop inspection to determine required parts. Refer to AR 750-1. c. Visual Inspections Inspections made while components are mounted in vehicle, are generally visual and are to be performed before attempting to operate these components. The purpose of these inspections is to determine condition of materiel and to take precautions to prevent any further damage if operation is faulty. d. Inspection Following Removal Inspection after materiel is removed from vehicle is performed to verify diagnosis made while installed and to uncover further defects. e. In-Process Inspection In-process inspection instructions on materiel are contained at end of each repair chapter together with ap- plicable repair instructions. f. Final Inspection Final inspection instructions for materiel in supporting maintenance shops are contained in para 2-5. g. Hydraulic System Inspection Hydraulic system inspection tests on components and system can only be checked with elevating system, traversing system, and rammer valve completely installed in vehicle. Refer to TM 9-2350-311-20-2 for checkout procedure of system and external leakage allowance criteria for components. h. DS/GS Pre-Embarkation Inspection Para 2-6 provides pre-embarkation inspection procedures. This inspection determines whether preventive maintenance has been performed. It is critical that equipment in units alerted for overseas movement be in good working order. i. Inspection of Materiel in the Hands of Troops Inspection of materiel in the hands of the troops is performed after pre-embarkation inspection and is part of the preparation for overseas movement. Para 2-7 details this inspection performed by direct and general support maintenance. 2-5