TM 10-3930-659-20 16-13.    INSIDE CAB HEATER HOSES AND HEATER CONTROL VALVE REPLACEMENT (Con't). 7. Loosen  two  clamps  (15)  and  remove  hoses  (4 and 11) from heater core (16). b. INSTALLATION 1. Install two hoses (4 and 11) on heater core (16).  Tighten two clamps (15). 2. Install two hoses (3 and 11) on heater control valve (10).  Tighten two clamps (8). 3. Install cable (14) on pin (9). 4. Install cable (14) into clamp (12) and tighten screw (13). 5. Install two hoses (3 and 4) in clamp (7) and install clamp with screw (6). TA707005 16-45