🔍 Key Concepts

• Distributor valves (A) function in a follow‑up steering gear system • Relationship between main variable stroke pump, servo (pilot) pump I, and the rams • How a hydraulic lock on the rams is normally achieved (e.g., by check valves or isolating valves), and which components usually perform that job

💭 Think About

• Trace the flow paths connected to the distributor valves labeled A: which lines go to the main pump, which to the servo pump I, and which to the rams? • For each answer choice, ask yourself: can this function be done by shifting/porting oil through valve A, or would it more likely be done by a different type of valve elsewhere in the system? • Look for symbols near A that indicate directional control, recirculation, or neutral positions—what ‘modes’ can A place the main system in?

✅ Before You Answer

• Verify which lines from main variable stroke pump actually pass through the distributor valves A and whether there is a recirculation/neutral path shown. • Check if lines from servo pump I physically connect to A or to some other block (e.g., replenishing or make‑up unit). • Identify which component or symbol in the diagram is clearly responsible for a hydraulic lock on the rams (check valves, shutoff valves, or locking devices) and confirm if that is or is not part of A.