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TEST CHAMBER ASSEMBLY, MODEL 452 UNIT MAINTENANCE CONT. - TM-10-1670-305-23P_134
ELECTRONIC TEST CHAMBER ASSEMBLY, MODEL 453 UNIT MAINTENANCE

TM-10-1670-305-23P Automatic Ripcord Release AR2 Model 451 NSN 1670-01-369-7914 Test Chanber Assembly AR2 Model 452 NSN 1670-01-370-0752 Manual
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TM 10-1670-305-23&P 0021  00-7/8 Blank TEST CHAMBER ASSEMBLY, MODEL 452 0021 00 UNIT MAINTENANCE ASSEMBLY 10.  Install replacement altimeter (26) into control housing (6) and secure with three screws (27). CAUTION Compression nuts used on pneumatic tube connections to air compressor (13) , vacuum pump (14), altimeter (26) and other components, such as the altitude chamber, are to be finger-tightened only.  Do not use wrenches; overtightening will not give an improved seal but will hasten the splitting of compression sleeves and pneumatic tubes. 11.  Connect tubing (22) to elbow (20) using compression nut (21).  Attach and fasten electrical connector (16) to altimeter (26).  Take care to correctly align connector (16) with the mating receptacle on altimeter (26) when assembling these parts. 12.  Reassemble housing panel (19) to control housing (6) and secure with four screws (18). 13.  Plug power cord into 110 VAC outlet. 14.  Switch test chamber on. 15.  Position CLIMB/FALL/COCK switch to CLIMB. 16.  Turn altitude control regulator knob counterclockwise until altitude shown on altimeter reaches 35,000 feet. 17.  Position CLIMB/FALL/COCK switch to FALL and wait until altitude falls below 25,000 feet; press and hold RAPID FALL DUMP switch until chamber reaches ground elevation. 18.  Open carrying case (2) and carefully lower mounting base (29) with attached components into carrying case (2).  Close and secure carrying case. END OF WORK PACKAGE







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