Perform an operational check to make sure the quality of corrective or preventive maintenance is as expected. Use the following procedures:

2. Connect electrical power and external hydrau-lic power to the hydraulic system.

3. Manually turn the nose gear to about 30 degrees to the right of center.

4. Operate the nose gear steering switch, and check to see that nose gear steering does not engage.

5. Be sure that personnel and equipment are clear of the arresting hook. Extend the arresting gear and check to see that the nose gear returns to center.

Figure 12-15.-Nose gear steering system diagram.

6. Simulate "weight on wheels by depressing the switch in the left wheel well. Engage the nose gear steering and partially depress the right rudder pedal. Check to see that the nose gear makes a partial right turn and stops. 

8. Release the steering switch, and check to see that the nose gear stays in the center position.

9. Retract the arresting gear, and repeat steps 6 and 7. Move the rudder pedal partially left.

10. Operate the steering switch, and slowly press the right rudder pedal for a full right turn. The triangular mark on the top front of the housing must be within 0.2 inch of the right 61-degree mark on the steering cap. Repeat this process with the left rudder pedal.

11. Manually turn the nose gear left, and then right to 0.3 inch beyond the 61-degree index mark on the steering cap. With the steering switch actuated, the system must be inoperative (beyond steering limits).

12. With the rudder pedals in the clean con-figuration, move the nose gear left. Then move the nose gear right to within 0.4 inch of the 61-degree limit, and operate the steering switch. The gear should return to neutral.

13. Release the weight-on-wheels switch and check to see that the nose gear steering disengages.

14. Release the steering switch, and disconnect external electrical and hydraulic power.

16. Close access doors and check cockpit and nose gear well for cleanliness and loose gear.

You can accomplish troubleshooting by studying system diagrams and related troubleshooting analysis charts. Malfunctions shown in the troubleshooting tables are in numerical order. The numbers relate to corresponding number(s) following the steps of the operational check. If trouble symptoms are known, you can accomplish troubleshooting without reference to the operational check. However, following system repair, perform an operational check to verify proper system operation.