(l)
Remove the rig pins E1 and E5 from the quadrant assemblies.
S 715-023
(4) Do this check on the transducers:
(a)
Move the control columns lightly until the system is in the center.
(b)
Make sure that the A and B voltages on the CDU display are less than 0.20 v.
(c)
Make sure that the difference between the A and B voltages is less than 0.20 v.
NOTE: If the voltage is larger than 0.20 v, do a check on the
____ control quadrant and bearings of the structure.
S 415-024
(5) Close the forward access door, 1103 (Ref 12-31-11/201).
TASK 22-11-92-735-027
4. Pitch Force Transducer Test
___________________________
A. References
(1)
22-11-00/501 or 22-11-01/501, Digital Flight Control System
(2)
24-22-00/201, Manual Control
(3)
29-15-00/201, Hydraulic A, B, and Standby System
B. Access
(1) Location Zones
101 Control Cabin, Left
102 Control Cabin, Right
C. Standard Tools and Equipment
(1) Spring Scale - 0 to 50 pounds, John Chatillon and Sons, Model DPP-50
D. Pitch Force Transducer Test - DFCS BITE
S 715-048
(1)
Do the preparation for the DFCS BITE test in this task: "Operational Test - Digital Flight Control System" (Ref 22-11-00/501 or 22-11-01/501).
S 745-029
(2)
Do a test on the transducers:
(a) Push the INIT REF key on the CDU keyboard.
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737-300/400/500MAINTENANCE MANUAL
(b)
Push the LSK adjacent to <INDEX.
(c)
Push the LSK adjacent to MAINT>.
(d)
Push the LSK adjacent to <DFCS.
(e)
Push the NEXT PAGE key on the CDU keyboard.
(f)
Push the LSK adjacent to <RIGGING.
(g)
Do the preparation steps as shown on the CDU display.
(h)
Push the LSK adjacent to <CONTINUE.
(i)
Do the Pitch Control Wheel Rigging Test in this task: "Rigging Tests" (Ref 22-11-00/501 or 22-11-01/501).
(j)
Push the INIT REF key on the CDU keyboard to get out of the BITE.
E. Pitch Force Transducer - Manual Test
S 485-045
(1)
Connect the spring scale to the center hub of the captain's control column.
S 735-030
(2)
Do the transducer test:
(a)
Engage the autopilot A to the CWS mode.
(b)
Make sure that the CWS ROLL and CWS PITCH indications come on.
NOTE: If you did not adjust the transducers correctly, the
____
autopilot is not engaged.
(c)
Slowly push the captain's control column. Keep a record of the force which the control column starts to move (between 2.5 to
6.5 pounds).
(d)
Slowly pull the captain's control column. Keep a record of the force that the control column starts to move (betweem 2.5 to
6.5 pounds).
(e)
Make sure that the different between the two forces is less than 2 pounds.
(f)
Slowly push the first officer's control column. Keep a record of the force that the control column starts to move (between
2.5 and 6.0 pounds).
(g)
Slowly pull the first officer's control column. Keep a record of the force that the control column starts to move (between
2.5 and 6.0 pounds).
(h)
Make sure that the difference between the two forces is less than 2 pounds.
(i)
Set the autopilot A to the CMD mode.
(j)
Push the ALT HOLD mode button.
(k)
Do the steps (d) thru (j) again but pull the control column continuously until the ALT HOLD button goes off.
(l)
Make sure that the force that caused the ALT HOLD button goes off is between 18 and 24 pounds.
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