S 434-052
(12)
Release the forward thrust levers.
NOTE: When the control system is correctly adjusted and the thrust
____ levers are held against the idle stop, rig pin P-7 can not be freely installed. You must turn the thrust cable drums clockwise to freely install rig pin P-7.
S 714-052
(13) Do a test of the autothrottle clutch pack assembly.
TASK 22-32-05-714-053
6. Test the Autothrottle Clutch Pack Assembly__________________________________________
A. Equipment
(1) Spring Scale, 0-20 lbs
B. References
(1)
AMM 06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels
(2)
AMM 22-00-02/201, Autoflight BITE
(3)
AMM 24-22-00/201, Electrical Power - Control
(4)
AMM 27-61-00/201, Spoiler/Speedbrake Control System
C. Access
(1)
Location Zones
113/114 Area Forward of NLG Wheel Well
211/212 Flight Compartment
(2)
Access Panel 113AL Flight/Landing Gear/Engine Control Components
D. Prepare for Test
S 864-054
(1)
Supply electrical power (AMM 24-22-00/201).
S 864-055
(2)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel:
(a)
11F14, TMC AC
(b)
11F15, TMC DC
(c)
11F16, TMC SERVO
(3)
Remove the DO-NOT-OPERATE tags on the thrust levers.
S 864-058
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A
757
MAINTENANCE MANUAL
S 864-059
(4) Set the A/T switch on the AFCS mode control panel (on the P55 panel) to ARM.
S 864-048
WARNING: THIS TEST USES MOVEMENT OF THRUST LEVERS AND
_______ CAN CAUSE AIRPLANE MOVEMENT IF ENGINES ARE ON OR SPOILER/SPEEDBRAKE MOVEMENT IF PRESSURE TO THE HYDRAULIC SYSTEMS IS ON. REFER TO THE SPOILER/SPEEDBRAKE DEACTIVATION PROCEDURE (AMM 27-61-00/201). ACCIDENTAL ENGINE OPERATION OR SPOILER/SPEEDBRAKE MOVEMENT CAN CAUSE BAD INJURY TO PERSONS.
(5)
Do the deactivation procedure for the spoilers (AMM 27-61-00/201) or move all persons and equipment away from the spoilers.
S 864-049
(6)
Make sure the engines are not on.
E. Procedure
S 714-060
(1)
Do the MCDP Ground Test 10 SERVO A/T (AMM 22-00-02/201).
S 864-061
(2)
Set the A/T switch on the AFCS mode control panel to OFF.
S 484-066
(3)
Attach a spring scale to the forward thrust lever knob.
S 724-067
(4)
Move the thrust levers full forward, and make sure that the spring scale measures the following:
(a) A load of less than 4.5 pounds.
S 084-068
(5) Remove the spring scale.
F. Put the Airplane Back to Its Initial Condition
S 864-062
(1)
Do the activation procedure for the spoilers if you did the
deactivation procedure (AMM 27-61-00/201).
(2)
Close the access panel, 113AL (AMM 06-41-00/201).
(3)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 414-063
S 864-064
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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ALL ú ú 03 Page 410 ú Dec 20/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
THRUST MANAGEMENT ENGINE - DESCRIPTION AND OPERATION
____________________________________________________
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