TM 10-3930-659-20 16-2. DEFROSTER BLOWER MOTOR MAINTENANCE. This Task Covers: a.  Removal d. Assembly b.  Brush Replacement e. Installation c.   Disassembly Initial Setup: Equipment Conditions: Tools/Test Equipment: • Battery disconnect switch in OFF position •   General mechanic's tool kit (Item 44, Appendix F) (see TM 10-3930-659-10). • Cab skirts removed (see paragraph 14-6). References: • Heater housing removed (see paragraph • TM 10-3930-659-10 16-10). a. REMOVAL 1. Loosen clamp (7) and remove duct hose (8) and clamp from defroster blower motor assembly (3). 2. Disconnect two connectors (6) from left panel wiring harness. 3. Remove three screws (5), washers (4), defroster blower motor assembly (3), and pad (2) from cab (1). TA706966 16-3