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TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download

Page 83 of 828

TM 9--2350--311--20--2 2--22 Change 4 2--9 PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) — CONTINUED 2--9.3 Vehicle Cleanliness CAUTION Do not direct a stream of water or steam against the opening between the hull and turret (turret ring), grilles, exhaust deflectors, fire control, or armament openings. Damage to components could result. The crew should bring a clean vehicle to a scheduled PMCS. It should be dry and not caked with mud. Washing the vehicle should not be done just before an inspection. Some defects, such as loose parts and oil leaks, may not be noticed immedi- ately after washing. 2--9.4 General Checks a. Electrical Connector/Wires. Check connectors; if loose, tighten. Check for open insulation cracks on wires. Repair with electrical tape (item 39, Appx D) or replace. Complete cab wiring diagram, harnesses, and connectors are described in detail in Chapter 8 of this manual. WARNING Never tighten hydraulic lines or fittings when hydraulic system is pressurized. Damage to tubes and fittings could result in injury to personnel. b. Hydraulic Connector/Lines and Hoses. Check connectors; if loose or if stained by hydraulic fluid, tighten. Check lines and hoses for cracks, loose clamps, or stains from hydraulic fluid. Repair or replace lines and tubes that are damaged. c. Seals. Check for leaks (fluid stains). Check condition of gasket materiel. Replace if deteriorated. Check door/hatch seals for deteriorations, cracks, and tears. d. Loose Bolts. Although a loose bolt can be difficult to spot without actually applying a wrench, you can often tell by loose or chipped paint around the bolt head and bare metal or rust present at the base of the bolt head. e. Welds. Many items are attached to the cab with welds. Damaged welds may be detected by rust or chipped paint where cracks occur. INITIAL SETUP T ools Artillery and turret mechanic’s tool kit (CL 5180--95--A12, see SC 9999--01--SKO) (Q, A, 1500 RDS) Materials/Parts GAA (item 18, Appx D) (Q, A) GMD (item 20, Appx D) (A, 1500 RDS) Hydraulic fluid, OHT (item 1, Appx D) (A, AOAP) Lockwashers (8 or 10) (item 88, Appx G) (A, 1500 RDS) Lockwire (item 32, Appx G) (Q, A) Lockwire (item 33, Appx G) (Q) Lubrication fittings (item 14, Appx D) (Q) References DA PAM 750--8 (AOAP) TM 3--6680--316--10 (A) TM 750--116 (Q) TM 9--2350--311--10 (Q, A, 1500 RDS)