TM 10-3930-669-20 TILT CYLINDER TEST (1)  Disconnect tilt cylinders from rail (Para 17-6). (2)  Start engine (TM 10-3930-669-10). (3)  With aid of an assistant, move tilt/lift joystick to tilt forward position and observe tilt cylinders (TM 10-3930-669-10). (a)  If tilt cylinders do not actuate, perform Step (4) below and replace tilt cylinders (Para 17-6). (b)  If tilt cylinders actuate, mast tilt is faulty.  Perform Steps (4) and (5) below.  Repeat procedure and notify Supervisor. (4)  Shut down engine. (5)  Connect tilt cylinders to rail. VERIFY REPAIR (1)  Start engine (TM 10-3930-669-10). (2)  Move tilt/lift joystick to tilt forward and back position and observe mast (TM 10-3930-669-10). (a)  If mast does not tilt forward and back.  Perform Step (3) below. Repeat procedure and notify Supervisor. (b)  If mast tilts forward and back, fault corrected. (3)  Shut down engine. 2-435