TM 10-3930-659-20 6-28. ENGINE OIL PRESSURE SWITCH REPLACEMENT. This task covers: a. Removal b. Installation INITIAL SETUP: Equipment Conditions: Tools/Test Equipment: •    Battery disconnect switch in OFF position (see • General mechanic's tool kit (Item 44, Appendix F) TM 10-3930-659-10). •    Left engine upper sideshield opened (see TM 10- References: 3930-659-10). • TM 10-3930-659-10 a. REMOVAL 1. Disconnect engine wiring harness connector (1) from engine oil pressure switch (3). 2. Remove engine oil pressure switch (3) from engine (2). b. INSTALLATION 1. Install engine oil pressure switch (3) on engine (2). 2. Connect engine wiring harness connector (1) to engine oil pressure switch (3). FOLLOW-ON TASKS: • Close left engine upper sideshield (see TM 10-3930-659-10). TA707808 6-122