Hydraulic Test Stand. Fixed.

TM 1-1500-204-23-2 (3) Touch up areas with original finish paint where corrosion was removed (4) Keep reservoir filled to specified level with hydraulic fluid, MIL-H-5606 or MIL-H- 83282. NOTE Consult applicable operation and service instructions manual for specific air pressurizing procedures. (5) Replace flexible hose connections or manual control valve when leaking (6) Replace defective valve core In valve stem and defective gauge unit with a like serviceable item. (7) Replace flexible hose that is frayed, cut, and deteriorated. b. Hydraulic Test Stand. Fixed. This test stand is used for adjusting, flushing, and testing the performance and operating characteristics of hydraulic system components to determine serviceability status WARNING Supervisors shall ensure that only qualified personnel operate, service, and maintain hydraulic test equipment. Because of the high pressures involved in testing, proper precautions must be taken to prevent damage or injury to the operator in case of line rupture. Drycleaning solvent is flammable and solvent vapors are toxic. Use P-D-680, Type II Solvent in a well- ventilated area. Keep away from open flames. Avoid prolonged solvent contact with skin. (1) Cleaning. Clean test stand by wiping with a cloth moistened in drycleaning solvent, Federal Specification P-D-680, and wiping dry with a clean cloth. (2) Daily inspection. Daily inspection will consist of the following: (a) Visually inspect entire test stand for signs of leaking valves, fittings, and connections. (b) Examine fluid level in reservoir and add hydraulic fluid, MIL-H-6083, as necessary. NOTE Preservative hydraulic fluid shall be used in all hydraulic test stands permanently Installed in the shop. (c) Inspect for worn bearings, packings, or broken seals at drive shafts on pump and motor. (d) Examine test stands for proper operation and correct reading of gauges (3) Periodic Inspection. For frequency and scope of periodic Inspection, consult the operation and service instructions manual for specific test stand; however, the following will be used as a general guide: (a) With machine operating under full-load conditions, make a complete visual Inspection of test stand to determine if there is any leakage. (b) Disconnect electrical power and examine all electrical connections In junction box for loose or broken leads. (c) Remove sump cover and clean out any dirt or lint with a clean cloth. Remove sump drain plugs and flush sump with test fluid from machine Reinstall sump drain plug. (d) Examine filters and replace filter elements In accordance with applicable operation and service instructions manual. c. Hydraulic Test Stand, Portable, Gasoline Engine-Driven. This test stand shown In figure 3-2 is used directly on the aircraft, and simulates the engine-driven hydraulic pump in performing system operational checks, checking system for leaks, and filling or flushing the system. 3-4