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27-02-00
ALL ú ú 01 Page 616 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 226-080
(6)
Measure and keep a written record of the distance the aileron moves down. Do this check:
(a)
Make sure the aileron movement is not more than 0.12 inch
(3.05 mm).
S 226-088
(7)
Do the freeplay check again and do these checks:
(a)
Make sure the dial indicator base did not move.
(b)
Make sure the last measurement is approximately the same as the first.
S 226-104
(8)
If the aileron movement is more than 0.120 inches (3.05 mm), examine the PCA rod ends, the hinge bearings, and the reaction link bearings for too much wear (Ref 27-11-20/601).
S 866-089
(9)
Remove the power from the hydraulic system that was pressurized (Ref 29-11-00/201).
S 226-092
(10)
Do the aileron freeplay check again for each of the remaining PCAs. Make sure only one PCA (for each aileron) is pressurized during the check.
G.
Put the Airplane Back to Its Usual Condition
S 096-095
(1)
Remove rig pins A3 and A4.
S 866-063
(2)
Remove the power from the left, right, and center hydraulic systems (Ref 29-11-00/201).
(3)
Remove electrical power if it is not necessary (Ref 24-22-00/201).
S 866-113
TASK 27-02-00-736-065
5. Spoiler Freeplay - Check________________________
A. Equipment
(1) Dial Indicator, Accurate to 0.001 inch
(0.025 mm) and a minimum stroke of 1 inch -
(25.4 mm) Commercially Available
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-02-00
ALL ú ú 01 Page 617 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
B.
C.
D.
A
757
MAINTENANCE MANUAL
(2) Device to Hold the Dial Indicator, tightly
against the fuselage
NOTE:____ A length of "T" beam (approximately
3 inches (7.6 cm) long) and adjustable
rods designed for use with dial
indicators can be used.
(3) Spring Force Scale, Push-Type (0 to 150 Pound
(0-677 newtons) Range) - Commercially Available
References
(1)
24-22-00/201, Electrical Power - Control
(2)
27-51-00/201, Trailing Edge Flap System
(3)
78-31-00/201, Thrust Reverser System
(4)
29-11-00/201, Main (Left, Right, and Center) Hydraulic SystemsAccess
(1)
Location Zones 565/665 Spoilers No. 1, No. 12 564/664 Spoilers No. 2, No. 11 563/663 Spoilers No. 3, No. 10 562/662 Spoilers No. 4, No. 9 554/654 Spoilers No. 5, No. 8 553/663 Spoilers No. 6, No. 7
Prepare for the Inspection/Check
S 866-114
(1) Supply electrical power (Ref 24-22-00/201).
S 866-061
WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURY TO YOU OR DAMAGE TO EQUIPMENT.
(2) Do this procedure: Thrust Reverser Deactivation for Ground Maintenance (Ref 78-31-00/201).
S 866-062
WARNING: THE AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND
_______ STABLILIZER ARE FULLY POWERED SURFACES. MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE AWAY FROM THE CONTROL SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(3)
Supply pressure to the left, right, and center hydraulic systems (Ref 29-11-00/201).
(4)
Extend the trailing edge flaps (Ref 27-51-00/201).
S 866-069
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