TM 10-3930-659-20 16-10.    HEATER HOUSING REPLACEMENT (Con't). 2. Remove four screws (5), washers (6), heater housing (7), and isolator (9) from cab floor. 3. Remove two cushions (10) and rubber strips (8) from heater housing (7). 4. Remove blower cushion (4) from heater housing (7). b. INSTALLATION 1. Install blower cushion (4) on heater housing (7). 2. Apply adhesive to two rubber strips (8) and cushions (10), and install rubber strips and cushions on heater 3. Install isolator (9) and heater housing (7) on cab floor with four washers (6) and screws (5). TA706995 16-34