TM10-3930-660-20 12-7. SERVICE BRAKE CONTROL VALVE -  REPLACE/ADJUST (Cont’d) Hose (7) is connected directly to accumulator. Plug hose (7) with a #12 plug immediately after disconnecting from valve. 3. TAG AND DISCONNECT SEVEN HYDRAULIC HOSES AT THE SERVICE BRAKE CONTROL VALVE  (6). a. b. c. d. e. Tag and disconnect elbow (8) on valve Tag and disconnect hose (10) from tee (6). Tag and disconnect hose (13) from tee (6). Tag and disconnect hose (7) from (6) . hose (9) and (11) at valve hose (12) and (14) at valve hose (15) from adapter (16) at valve (6). Tag and disconnect hose (17) from elbow (18) at valve (6). 12-17