control knob.
(c)
Rotate trim conrol knob from neutral in each direction to stop. 1) Measure knob travel. 2) Make sure the total rotation in both directions is 4 turns +130 ±22 degrees.
(d)
Rotate trim control knob in both directions until indicator is at 10. 1) Make sure that rudder moves 10.22 ±0.50 inches in each direction from neutral.
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NOTE: Nose gear steering need not be disconnected if airplane is jacked so that nose gear is fully extended.
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(8)
Test Standby Rudder Actuator Deadband.
(a)
Provide rudder systems A and B hydraulic power (AMM 27-21-0/201).
(b)
Check that trim is at neutral.
(c)
Check that rudder is at neutral.
(d)
Set FLT CONTROL switches A and B to OFF, then set FLT CONTROL switch B to STDBY RUD position.
(e)
By hand push hard on rudder to the right, then slowly release the load.
(f)
With hands off rudder, measure rudder position right.
(g)
By hand push hard on rudder to the left, then slowly release the load.
(h)
With hands off rudder, measure rudder position left.
(i)
Calculate difference between (f) and (h).
1) If difference is greater than 0.2 inch, the standby actuator must be adjusted again.
(j)
Set FLT CONTROL switches A and B to ON positions.
(9)
Do the Yaw Damper Coupler Installation Test (AMM 22-12-01/401).
(10)
Rudder Override Operational Test.
NOTE: FOLLOW THE STEP IN THIS TASK IN THE ORDER THAT THEY ARE WRITTEN. FAILURE TO DO SO CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(a)
Set FLT CONTROL switches A and B to OFF positions.
(b)
Remove access panels 9512 and 9515 (AMM 12-31-51/201).
(c)
Do the rudder override operational test:
1) Make sure the rudder and rudder pedals are in the neutral position.
2) Manually hold the rudder aft edge in the centered position.
3) Observe the torque tube override assemblies and do these steps:
a) Slowly push on the captain's left rudder pedal forward full travel then return the pedal to the neutral position.
NOTE: It will require more force than normal operation for the override mechanism to breakout of the detent position.
b) Verify that all 3 override assemblies breakout of their detent positions. c) Verify that there is no sign of binding or interferences d) If binding or excessive friction exist, the override assemblies may be
damaged or improperly installed. Correct this condition and repeat this check.
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W29108
500 Rudder Pedal Force Checking Tool
May 01/03 Figure 506 27-21-1
Page 527
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
4) Observe the torque tube override assemblies and do these steps: a) Slowly push on the captain's right rudder pedal forward full travel then return the pedal to the neutral position.
NOTE: It will require more force than normal operation for the override mechanism to breakout of the detent position.
b) Verify that all 3 override assemblies breakout of their detent positions. c) Verify that there is no sign of binding or interferences d) If binding or excessive friction exist, the override assemblies may be
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