(6)
Adjust rod length until attach bolts will slide smoothly through rod attach points.
(7)
Hold rod assembly between 2 actuators in position and check that rod end bearing threads are visible thru inspection holes in rod assembly.
(8)
Tighten jamnut on rod end and lockwire. Check that bolt still slips smoothly thru rod end and actuator lever and install bolt, washer and nut.
(9)
Jiggle aft quadrant and ensure right elevator trailing edge is aligned within 士0.06 inch of index on tail cone.
(10)
Hold rod assembly to actuator A and check that bolt can be slipped smoothly thru rod end and lever. Adjust as necessary and check that length is 17.52 inches (nominal) and does not exceed 17.85 inches. Check that rod end bearings are visible thru inspection holes in rod assembly.
(11)
Disconnect VTVM and connect to LVDT FEEDBACK J10B and J11B on test set. Check that voltage is within士0.12 volts of voltage recorded in step (5).
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580 A/P Elevator Actuator Adjustment
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Page 503
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
(12)
Tighten jamnuts on rod ends and lockwire. Check that bolt still slips smoothly thru rod end and actuator lever and install bolt, washer and nut.
(13)
Remove rigging weight.
E. Functional Test Actuator
NOTE: Make sure stabilizer jackscrew B dimension is set at 41.57 士0.01 inches (3 units of trim).
(1)
Pressurize elevator feel pitot system to 3.5 士0.05 psig.
CAUTION: DO NOT EXCEED 6.0 PSI GAUGE PRESSURE TO FEEL SYSTEM. SYSTEM DAMAGE MAY RESULT.
(2)
Set switches on test set as follows:
(a)
LVDT FEEDBACK - A ON, B OFF
(b)
LVDT EXCITATION - A ON, B OFF
(c)
SOLENOID EXCITATION - (PISTON and ENGAGE) switches A ON, B OFF
(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 ONLY
(j)
POWER: ON
(3)
The following lights should be ON:
(a)
SOLENOID EXCITATION - PISTON and ENGAGE - A
(b)
LVDT EXCITATION - A
(c)
POWER
NOTE: All other lights should be OFF.
(4)
Turn on hydraulic system A only.
(5)
Connect vacuum tube voltmeter (VTVM) to LVDT FEEDBACK - A, jacks J10A and J11A.
(6)
Align elevator to index within 0.06 inches (0.10 degrees) by operating POSITION CONTROL A knob. Verify VTVM reads 2.00士0.03 volts. If not, check rigging. Lock POSITION CONTROL A knob in place.
(7)
Set SOLENOID A switch to +HDOVR.
(8)
Measure and record right elevator position.
(9)
Set SOLENOID A switch to A NORM, then -HDOVR.
(10)
Measure and record right elevator position.
(11)
Calculate total travel from Steps (8) to (10). Check that travel is 2.30 士0.50 inches (3.82 士0.83 degrees).
(12)
Turn on both hydraulic systems A and B.
(13)
Set SOLENOID A switch to A NORM, then +HDOVR.
(14)
Measure and record right elevator position.
(15)
Set SOLENOID A switch to A NORM, then -HDOVR.
(16)
Measure and record right elevator position.
(17)
Calculate total travel from Steps (14) to (16). Check that travel is 2.30士0.50 inches (3.82 士0.83 degrees).
(18)
Set switches on test set as follows:
(a)
LVDT FEEDBACK - A OFF, B ON
(b)
LVDT EXCITATION - A OFF, B ON
(c)
SOLENOID EXCITATION - (PISTON and ENGAGE) switches, A OFF, B ON
(d)
NSS EXCITATION - A OFF, B OFF
(e)
NSS FEEDBACK - A OFF, B OFF
(f)
CURRENT SELECT: B T-VALVE
(g)
SOLENOIDS ON/OFF (Center Switch): ON
(h)
A&B SOLENOID - A NORM, B NORM
(i)
ACTUATOR SELECT: B ONLY
(j)
POWER: ON
(19)
The following lights should be ON:
(a)
SOLENOID EXCITATION - PISTON and ENGAGE - B
(b)
LVDT EXCITATION - B
(c)
POWER
512
22-11-261 Page 504 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Oct 20/83
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