scale is at the correct position as shown on the TENSION REGULATOR SCALE SETTING vs TEMPERATURE chart (Fig. 504). 2) Make sure you can easily install rig pin E/ST7 in the aft quadrant indexer with light finger pressure (Fig. 506).
(e)
Adjust the turnbuckles in cables E2A and E2B (first officer's side) until you get these conditions to agree: 1) Make sure the tension in cables E2A and E2B are correct as
shown in the CABLE TENSION vs TEMPERATURE chart (Fig. 504).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-31-00
ALL ú ú 10 Page 536 ú May 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
2) Make sure you can easily install the fasteners for the control rod on the first officer's forward quadrant with light finger pressure.
(f)
Remove the rope and install the control rod on the first officer's forward quadrant.
(g)
Install the locking clips on the turnbuckles.
NOTE: Make sure no more than three threads on any terminal are
____ exposed outside of the turnbuckle body.
(h)
Apply corrosion preventive compound to the turnbuckle threads that can be seen.
(i)
Make sure you can easily install rig pins E/ST6 and E/ST7 with light finger pressure.
(j)
Remove rig pins E/ST6 and E/ST7.
(k)
Remove the rope and connect the output control rods for the left and right aft quadrants (View C-C, Fig. 506) to the crank arms on the aft quadrants.
(l)
Connect the captain's and first officer's feel and centering unit control rods to the crank arms on the aft quadrants (Fig. 507).
(m)
Remove rig pins E/ST8 and E/ST9 in the input crank of the middle PCA for the left and right elevator (Detail C, Fig. 509).
(n)
Operate the cable system through full control column travel (make sure that the control column touches the column stops).
(o)
Make sure that the conditions that follow are correct:
1) The turnbuckles in cables E1A, E2A, E1B, and E2B do not move nearer than 1.0 inch (25 mm) to the fairleads, grommets or pulleys.
2) The cable tension does not change.
H. Adjust the Mechanical Linkage on the Feel and Centering Unit
S 865-045
(1)
Do the steps that follow to prepare for the mechanical linkage adjustment for the feel and centering unit:
(a)
Make sure that Dimension B on the stabilizer ballscrew actuator is 15.89 | 0.01 inches (403.6 | 0.3 mm) (Fig. 502).
(b)
Make sure that the CENTER and RIGHT STAB TRIM SHUTOFF valve switches on the P10 panel are at the CUTOUT position.
(c)
Make sure these circuit breakers on the P11 panel are open and that DO-NOT-CLOSE tags are attached: 1) 11B19 or 11A19, STAB TRIM ALT (INSTALLED) 2) 11C12, STAB TRIM SHUTOFF LEFT 3) 11C13, STAB TRIM SHUTOFF RIGHT 4) 11H11 or 11C05, STAB TRIM CONT L 5) 11H20, STAB TRIM CONT R
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-31-00
ALL ú ú 11 Page 537 ú May 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(d)
Make sure the power is removed from the left, right, and center hydraulic systems (AMM 29-11-00/201).
(e)
Disconnect the output control rods on the left and right aft quadrants from the crank arms on the aft quadrants.
(f)
Use rope to hold the control rods away from the movement of the aft quadrants.
(g)
Install rig pins E/ST8 and E/ST9 in the input crank for the middle PCA of the left and right elevators.
(h)
Remove the four decentering springs from the upper and lower arm of the feel and centering unit (Fig. 506).
(i)
Disconnect the control rod on the captain's and first officer's feel and centering units from the aft quadrants.
CAUTION: DO NOT LET THE PRESSURE GO ABOVE 4.75 PSI (32.7 KPA)
_______ (426 KNOTS). THIS WILL PREVENT DAMAGE TO THE FEEL COMPUTER. MAKE PRESSURE CHANGES SUCH THAT THE INDICATED RATE OF CLIMB (OR DESCENT) IS LESS THAN 5000 FEET PER MINUTE FOR THE STATIC SYSTEM AND 300 KNOTS PER MINUTE FOR THE PITOT SYSTEM. APPLICABLE GAUGE SAVER RESTRICTORS OR EQUIVALENT DEVICES MUST BE USED.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：757 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 3(17)
