TM10-3930-660-20 17-10. HEATER HOSES, LINES AND FITTINGS - REPLACE (Cont'd) e. Remove clamp (11) and hose (10) at adapter  (12). Discard clamp (11). f. Remove clamp (13) and hose (5) at adapter  (14). Discard clamp (13). 2. REMOVE FITTINGS AS REQUIRED. a. b. c. d. Remove connector (3), bushing (15),  elbow  (16),  and  nipple  (17) at  heater  (18). Remove connector (6), bushing (19),  elbow  (20),  and  nipple  (21) at heater (18). Remove cable from heater control valve (8) and remove heater control valve (8). Remove adapter (14), tee (22), bushing (23), drain cock (24), elbow (25) and nipple (26) at engine. e. Remove adapter (12) and elbow (27) at  engine. 17-27