TM 10-3930-659-34 4-39. PRESSURE REGULATOR REPLACEMENT. This Task Covers: a. Removal b. Installation Initial Setup: Equipment Conditions: Materials/Parts: • Transmission oil temperature sender removed (see • One preformed packing TM 10-3930-659-20). • Two retaining rings • Torque converter removed (see paragraph 4-38). References: Tools/Test Equipment: •·TM 10-3930-659-20 •·General mechanic's tool kit (Item 71, Appendix E) • Retaining ring pliers (Item 46, Appendix E) a. REMOVAL 1. Remove plug (1) and preformed packing (2) from transmission assembly (10). Discard preformed packing. 2. Remove  retaining  ring  (3),  valve  sleeve  (5),  piston  (6),  spring  (7),  washer  (8),  and  retaining  ring  (9)  from transmission assembly (10). Discard retaining rings. 3. Remove pin (4) from valve sleeve (5). 4-157