🔍 Key Concepts

• Trace the mechanical linkage (chain/cable symbol) from the Mechanical Slave Remote Control Station to see which lever it actually moves. • Follow the air pilot lines from that lever’s control valve spool to see what device is shifted pneumatically. • Distinguish clearly between a valve that is moved directly by the chain/cable and a valve that is moved indirectly by air pressure.

💭 Think About

• On the diagram, when the slave lever is moved ahead, what is the first component that changes position: a clutch valve, a pilot-house valve, or the engine-room station valve? • Which component on the diagram is labeled as the clutch actuator 4-way valve, and does any mechanical symbol (chain/cable) connect to it directly, or only air lines? • Compare the labels near the top of the diagram: does the mechanical slave station appear to be tied to the pilot house master, the pneumatic remote, or the engine room control assembly?

✅ Before You Answer

• Verify which control valve spool shows a mechanical linkage symbol from the Mechanical Slave Remote Control Station lever. • Confirm that the clutch actuator 4-way valve is operated by pilot air coming from another valve, not by a mechanical linkage. • Make sure the option you choose correctly describes both parts: the mechanically moved valve and the resulting pneumatic action that shifts the clutch actuator 4-way valve ahead.