TM 10-3930-669-20 1.  SERVICE BRAKES DO NOT APPLY OR APPLY SLOWLY (CONT). KNOWN INFO TEST OPTIONS Transmission temperature normal. Hom operates. Brake fluid level correct. Drive axle OK. Brake discs OK. Brake linkage adjustment correct. Pressure test. STE/ICE-R #50. POSSIBLE PROBLEMS REASON FOR QUESTION Master cylinder faulty. Master cylinder pressure switch faulty. Transmission inching valve faulty. Wire 27A faulty. Relay R9 ground wire faulty. Wire 27 faulty. Wire 27B faulty. Relay R9 faulty. If   1,100   to   1,200   psi   (7,584   - 8,274     kPa)     are     not     present, master cylinder is faulty. ¬ 2-396