NOTE: All other lights should be OFF.
(20)
Connect VTVM to LVDT FEEDBACK -B, jacks J10B and J11B.
(21)
Repeat steps (6) thru (17) using POSITION CONTROL B and SOLENOID B switch.
(22)
Set POWER switch to OFF.
(23)
Set SOLENOID B switch to B NORM.
(24)
Set stabilizer jackscrew B dimension at 42.28 士0.01 inches (2.5 units of trim).
(25)
Reduce pressure on elevator feel pitot system to 0, then increase to 2.8 士0.05 psig.
(26)
Ensure test set switches are set as noted in Step E.(18), and hydraulic system B only is on.
(27)
Set SOLENOID B switch to +HDOVR.
(28)
Measure and record right elevator position.
(29)
Set SOLENOID B switch to B NORM, then -HDOVR.
(30)
Measure and record right elevator position.
(31)
Calculate total travel from Steps (28) to (30). Check that travel is 1.85士0.40 inches (3.07 士0.66 degrees).
(32)
Turn on both hydraulic systems A and B.
(33)
Set SOLENOID B switch to B NORM, then +HDOVR.
(34)
Measure and record right elevator position.
(35)
Set SOLENOID B switch to B NORM, then -HDOVR.
(36)
Measure and record right elevator position.
(37)
Calculate total travel from Steps (34) to (36). Check that travel is 1.85士0.40 inches (3.07 士0.66 degrees).
(38)
Set test switches as noted in Step E.(2).
(39)
Repeat steps (27) thru (37) using SOLENOID A switch and turn OFF hydraulic system B (A only ON) in step (32).
(40)
Set power switch to OFF.
(41)
Reduce pressure on elevator pitot system to 0.
(42)
Remove air pressure lines from elevator feel system pitot tubes on fin and restore system to normal.
(43)
Set stabilizer jackscrew "B" dimension at 41.57士0.01 (3.0 units of trim).
(44)
Set switches on test set as follows:
(a)
LVDT FEEDBACK - A ON, B ON
(b)
LVDT EXCITATION - A ON, B ON
(c)
SOLENOID EXCITATION - (PISTON and ENGAGE) switches, A and B ON
(d)
NSS EXCITATION - A OFF, B OFF
(e)
NSS FEEDBACK - A OFF, B OFF
(f)
CURRENT SELECT: A T-VALVE
(g)
SOLENOIDS ON/OFF (Center Switch): ON
(h)
A&B SOLENOID - A NORM, B NORM
(i)
ACTUATOR SELECT: A & B COMMON
(j)
POWER: ON
(45)
The following lights should be ON:
(a)
SOLENOID EXCITATION - PISTON and ENGAGE - A
(b)
SOLENOID EXCITATION - PISTON and ENGAGE - B
(c)
LVDT EXCITATION - A and B
(d)
POWER
512
Oct 20/83 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 22-11-261 Page 505
NOTE: All other lights should be OFF.
(46)
Turn on both hydraulic systems A and B.
(47)
Adjust POSITION CONTROL A knob until trailing edge of elevator stops moving up.
(48)
Measure and record right elevator position. Check that position is between 10.10 and
11.10 inches up (16.81 to 18.49 degrees).
(49)
Adjust POSITION CONTROL A knob until trailing edge of elevator stops moving down.
(50)
Measure and record right elevator position. Check that position is between 7.10 and 8.10 inches down (11.77 to 13.45 degrees).
(51)
Align elevator to index within士0.06 inches (0.10 degrees) by operating POSITION CONTROL A knob. Lock knob in place.
(52)
Connect VTVM to LVDT FEEDBACK -B, jacks J10B and J11B, and record voltage.
(53)
Set ENGAGE A and ENGAGE B switches to OFF.
(54)
Jiggle captain's control column to ensure system is centered, and check that right elevator trailing edge aligns to index within +0.06 inches (0.10 degrees).
(55)
Set ENGAGE A switch to ON then OFF. Check that elevator does not move. If elevator moves, repeat steps (51) to (54).
(56)
Set ENGAGE B switch to ON then OFF. Elevator should not move. If elevator moves repeat Steps (51) to (54).
(57)
Set ACTUATOR SELECT switch to A & B INDEPENDENT.
(58)
Set PISTON B and ENGAGE B switches to ON.
(59)
Set PISTON A and ENGAGE A switches to OFF.
(60)
Adjust POSITION CONTROL B knob until VTVM connected to J10B and J11B reads within士0.03 volts of reading taken in Step (52), and elevator aligns to index within士0.06 inches (0.10 degrees).
(61)
Set PISTON B and ENGAGE B switches to OFF, then ON, then OFF. Check that elevator does not move.
(62)
Set PISTON A and ENGAGE A switches to ON.
(63)
Connect VTVM to LVDT FEEDBACK -A, jacks J10A and J11A.
(64)
Operate POSITION CONTROL A knob until VTVM reads with士0.03 volts of reading taken in Step (52) and elevator aligns to index within士0.06 inches (0.10 degrees).
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