3-26. The fixed sheave assembly, in conjunction with what other component, converts the longitudinal motion of the linear retraction engine into the motion of the cables to operate the grab? 1. The retraction engine control valve 2. The retract stroke buffer 3. The accumulator 4. The crosshead assembly 3-27. What drive system component(s) provide(s) a means of adjusting the battery position of the grab on the linear retraction engine? 1. Crosshead 2. Cable tensioners 3. Cable equalizers 4. Adjustable idler sheaves 3-28. What component stops the forward motion of the linear retraction engine crosshead? 1. The retraction engine control valve 2. The retract buffer 3. The advance buffer 4. The maneuver forward valve 3-29. The advance and retract cycle times of the linear retraction engine are determined by which of the following components? 1. The metering rods 2. The fixed orifices 3. The fine adjustment valves 4. The retraction engine control valve 3-30. Which of the following components direct(s) the flow of fluid from the retraction engine hydraulic accumulator to the operating chambers of the linear retraction engine main hydraulic cylinder? 1. The retraction engine control valve 2. The engine hydraulic blocking valve 3. Two air-operated solenoid valves 4. Three main hydraulic pumps 3-31. Which of the following conditions would indicate a water loss in the catapult hydraulic fluid? 3-32. What is the function of the catapult main hydraulic pump delivery control unit? 1. 2. 3. 4. To direct fluid to the gravity tank when the pump is on stroke only To direct fluid to the accumulator when the pump is off stroke only To direct fluid to the accumulator when the pump is on stroke and to the gravity tank when the pump is off stroke To direct fluid to the accumulator when the pump is off stroke and to the gravity tank when the pump is on stroke 3-33. The motion of the rotary retraction engine hydraulic motor is transferred to the cable drive system by what assembly? 1. The traverse carriage assembly 2. The crosshead assembly 3. The sheave and adapter assembly 4. The drum assembly 3-34. The forward motion of the rotary retraction engine is stopped at the completion of the grab advance cycle by what force or device? 1. By cable dead weight drag 2. By fluid acting on the carriage assembly 3. By the advance buffer 4. By fluid braking of the hydraulic motor 1. An increase in ph number 2. A decrease in ph number 3. An increase in viscosity 4. A decrease in viscosity 14