TM 10-3930-659-20 7-12. TRANSMISSION THERMAL BYPASS VALVE PRESSURE TEST. This Task Covers:  Pressure Test Initial Setup: Equipment Conditions: Materials/Parts: Parking brake set (see TM 10-3930-659-10). Six preformed packings Frame locking bar Installed (see TM 10-3930- 659-10). Personnel Required:  Two Left engine upper sideshield opened (see TM 10-3930-659-10) References: Left engine lower sideshield removed (see TM 10-3930-659-10 paragraph 14-16). Tools/Test Equipment: General mechanic's tool kit (Item 44, Appendix F) Adapter (Item 3, Appendix F) Coupler (Item 9, Appendix F) Pressure gage (two) (Item 18, Appendix F) Hose assembly (Item 20, Appendix F) Plug (Item 26, Appendix F) Union (Item 47, Appendix F) 7-35

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