ASSIGNMENT 4 Textbook Assignment: Associated Launching Equipment," and "The Aircraft Launch and Recovery Equipment Maintenance Program (ALREMP)"; chapters 5 and 6, pages 5-1 through 6-20. 4-1. 4-2. 4-3. 4-4. 4-5. 4-6. The Mk 7 Mod 0 JBD consists of a total of how many watercooled panels? 1. Six 2. Two 3. Eight 4. Four A total of how many hydraulic cylinders are used to raise and lower each pair of JBD panels? 1. Six 2. Two 3. Eight 4. Four The removable module assemblies are attached to the JBD panel assembly by what devices? 1. Welds 2. Clamps 3. Edge-fitted brackets 4. Screws The JBD cooling water must be maintained at what minimum pressure? 1. 60 psi 2. 70 psi 3. 80 psi 4. 90 psi The emergency lowering hydraulic bypass lines permit fluid to bypass what component of the JBD hydraulic system? 1. The lowering side of the hydraulic cylinder 2. The solenoid manual override 3. The four-way control valves 4. The gravity tank What devices control the flow of cooling water through the Mk 7 JBD panel module assemblies? 1. Throttle valves 2. Vacuum breaker valves 3. Orifices 4. Manual hand valves 4-7. Where is the Mk 7 JBD auxiliary control panel located? 1. At deckedge 2. In the retraction-engine machinery room 3. In the JBD machinery room 4. At the catapult main control console 4-8. JBD control is transferred from the portable control box to the auxiliary control panel by what switch? 1. A manual override switch 2. The defeat interlock switch 3. The portable control box suspend switch 4. A rotary type switch 4-9. In the event of an electrical power failure, how may the Mk 7 JBDs be raised or lowered? 1. By the auxiliary control panel 2. By the portable control box group UP-DOWN toggle switch 3. By the manual override on the four-way control valves 4. By a tow tractor and cable 4-10. When it is necessary to remove a component from the hydraulic system, you should cap or plug the open lines to prevent foreign matter contamination. 1. True 2. False 4-11. Which of the following actions can you take to isolate portions of the JBD hydraulic system? 1. Close the shutoff valve between the filter and the main hydraulic pumps 2. Close the four-way valve manifold shutoff valves 3. Close the hydraulic cylinder isolation valves 4. By doing any of the above, as appropriate 19