YAW CONTROLS TRAVEL CHECK (Continued)

YAW CONTROLS TRAVEL CHECK (Continued) - TM-55-1520-240-23-9_147

TM-55-1520-240-23-9 CH-47D Heilcopter Manual
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TM 55-1520-240-23-9 11-35 YAW CONTROLS TRAVEL CHECK (Continued) 11-35 1. Check two yaw pedal pointers (1 and 2). Pointers must be between NEUTRAL lines (3) on yaw quadrants (4 and 5). 2. Have helper press and hold CENTERING DEVICE RELEASE switch (6) on copilot’s control stick (7). Pedal force must not be more than 20 pounds; otherwise, damage to components will occur. 3. Push and hold copilots left pedal (8) fully forward with about 10 pounds of force. 4. Release switch (6) on control stick (7). 5. Check left pedal pointer (1). Pointer must be between SYSTEM STOP lines (9 and 10) on quadrant (4). 6. Working from forward left work platform, measure and record length of left servocylinder pistons (11). Length must be 3-21/64 to 3-53/64 inches. 7. Working from forward right work platform, measure and record length of right servocylinder pistons (12). Length must be 8-15/32 to 8-31/32 inches. 11-130

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