(29.99 to 30.68 kPa) (410 to 415 knots) (AMM 34-11-00/201).
S 215-133
(12) Stop for 30 seconds, then make sure that the ELEV FEEL message is on the EICAS display.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 865-134
(13)
Remove the pressure from auxiliary pitot system No. 1 (AMM 34-11-00/201).
M.
Elevator Feel System Forces Test
S 865-330
WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN
_______ HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
(1) Make sure that the left, right, and center hydraulic systems are pressurized (AMM 29-11-00/201).
S 225-136
(2) Make sure that Dimension B on the stabilizer ballscrew actuator is ú 17.32 | 0.01 inches (439.9 | 0.3 mm).
S 485-137
(3)
Attach the force gage to the captain's control column at the finger reference point to measure control column forces (Fig. 505).
S 495-138
(4)
Put a piece of tape on the side of the airplane adjacent to the elevator trailing edge.
NOTE: Marks for the up and down positions of the elevator will be
____
put on the tape.
S 865-139
(5) Let the elevator go to its center position.
NOTE: Use this for a start point for the travel tests.
____
S 725-374
(6)
Do the steps that follow for the feel forces test with auxiliary pitot systems No. 1 and 2 not pressurized, and all hydraulic systems pressurized:
(a)
Remove the pressure from auxiliary pitot system No. 1 (AMM 34-11-00/201).
(b)
Push the captain's control column forward until the left elevator moves down 2.10 | 0.05 inches
(53.3 | 1.3 mm).
(c) Make sure that the control column force is 11 to 15 pounds (49 to 67 newtons).
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757
MAINTENANCE MANUAL
(d)
Push the captain's control column forward until the left elevator moves down 6.85 | 0.05 inches (174.0 | 1.3 mm).
(e)
Make sure that the control column force is 26 to 34 pounds (116 to 151 newtons).
(f)
Push the captain's control column forward until the left elevator moves down 16.20 | 0.05 inches
(411.5 | 1.3 mm).
(g)
Make sure that the control column force is 34 to 44 pounds (151 to 196 newtons).
(h)
Do the above steps again, except pull the captain's control column aft.
(i)
Make sure that the control column forces (when the captain's column is pulled aft) are as follows: 1) 15 to 23 pounds (67 to 102 newtons) for elevator up
movement of 2.10 | 0.05 inches (53.3 | 1.3 mm).
2) 28 to 35 pounds (125 to 156 newtons) for elevator up
movement of 6.85 | 0.05 inches (174.0 | 1.3 mm).
3) 35 to 45 pounds (156 to 200 newtons) for elevator up
movement of 16.20 | 0.05 inches (411.5 | 1.3 mm).
S 725-140
(7) Do the steps that follow for the feel forces test with the two auxiliary pitot systems, and all hydraulic systems pressurized:
CAUTION: DO NOT LET THE PRESSURE GO ABOVE 4.75 PSI (32.8 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.
(a) Pressurize auxiliary pitot systems No. 1 and 2 to between 4.35 and 4.45 psig (29.99 and 30.68 kPa) (410 to 415 knots) (AMM 34-11-00/201).
NOTE: Use airspeed values only when the static pressure on the
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本文链接地址：757 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 3(43)
