TM 10-3930-659-20 7-13. TRANSMISSION THERMAL BYPASS VALVE MAINTENANCE. This task covers: a. Removal d. Assembly b.    Disassembly e. Installation c.    Cleaning and Inspection INITIAL SETUP: Equipment Conditions: Materials/Parts: • Parking brake set (see TM 10-3930-659-10). • Rags (item 27, Appendix C) • Transmission oil sampling valve removed (see    • Dry cleaning solvent (Item 31, Appendix C) paragraph 7-18). • One repair kit Tools/Test Equipment: • Six preformed packings • General mechanic's tool kit (Item 44, Appendix F) • Machinist's vise (Item 48, Appendix F) References: • TM 10-3930-659-10 General Safety Instructions: • Dry cleaning solvent is flammable and must not be used near open flame.  Use only in a well-ventilated area. NOTE A  suitable  container  should  be  used  to  catch  any draining  hydraulic  fluid.    Ensure  that  all  spills  are properly cleaned. a. REMOVAL 1. Remove screw (3) and clamp (4) from transmi sion thermal bypass valve (1).  Move hose ( aside. 2. Disconnect two hoses (6 and 8) from transmission thermal bypass valve (1). 3. Remove screw (2) and transmission thermal bypass valve (1) from plate (7). 7-38