TM 5-4310-386-14 Section III.  TOOL AND TEST EQUIPMENT REQUIREMENTS FOR COMPRESSOR UNIT 20 CFM, 3200 PSI TOOL OR TEST EQUIPMENT MAINTENANCE NATIONAL/NATO TOOL REF CODE CATEGORY NOMENCLATURE STOCK NUMBER NUMBER 20 F Assembly Jig 11365-645 (57328) 21 F Piston Ring Clamp 57495-645 (57328) 22 F Piston Ring Remover N4453 (57328) 23 F Tee Wrench 57478-645 (57328) 24 F Tee Wrench 57408-645 (57328) 25 F Piston Ring Bush 57406-645 (57328) 26 F Piston Ring Bush 58197-645 (57328) 27 F Reduction Piece N3120 (56328) 28 O Test Pressure Gauge 057491-645 (57328) 29 O Test Pressure Gauge 057492-645 (57328) 30 O Adjustable Wrench N3408 (57328) 31 F Compressor Pressure 0030602 Recorder Fitting (62445) 32 F Gauge, Dial 0.01 mm for 0030543 Adjusting and Measuring (62445) Device 33 F Adjusting Device for 0030498 Determining Top Dead Center (62445) with Dial Gauge B-15