S 865-056
(3)
Set the ENG LIMITER switches on the P5 panel to off.
S 085-060
(4)
Disconnect the MCDP remote control unit from connector D41101 on the P61 panel.
S 865-167
(5)
Set the Inertial Reference System (AMM 34-21-00/501) to off if it is not necessary.
S 445-151
(6)
Do the activation procedure for the spoilers if you did the deactivation procedure (AMM 27-61-00/201).
S 865-063
(7)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
TASK 22-32-00-755-141
3. Test the Autothrottle Clutch Slip Load______________________________________
A. General
(1) This test does a check of the autothrottle clutch slippage through the full range of travel of the clutch.
B. Equipment
(1) Spring Scale 0-50 pounds, Chatillon Manufacturing Company Model DPP-100 or equivalent
C. Consumable Material
(1) 601505 Safety Wire, 0.020 inch-diameter minimum, stainless or Monel material
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757
MAINTENANCE MANUAL
D. References
(1)
AMM 06-41-00/201, Section 41 Access Doors and Panels
(2)
AMM 27-61-00/201, Spoiler/Speedbrake Control System
(3)
AMM 78-31-00/201, Thrust Reverser System
E. Access
(1)
Location Zones
113/114 Area Forward of NLG Wheel Well
211/ 12 Flight Compartment
(2)
Access Panel 113AL Flight/Landing Gear/Engine Control Compartments
F. Prepare to Test the Autothrottle Clutch Slip
S 845-143
WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE ALL
_______ PERSONS AND EQUIPMENT AWAY FROM THE SPOILERS. THE SPOILERS CAN RETRACT QUICKLY AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) Do the deactivation procedure for the spoilers (AMM 27-61-00/201) or more all persons and equipment away from the spoilers.
S 845-144
WARNING: DO THE ACTIVATION PROCEDURE TO PREVENT THE OPERATION OF THE
_______ THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(2)
Do the deactivation procedure for the thrust reverser for ground maintenance (AMM 78-31-00/201).
S 015-140
(3)
Open the access panel, 113AL, to get access to the autothrottle clutch assembly (AMM 06-41-00).
G. Procedure
S 355-131
(1)
Remove the bolts, washers, and nuts to disconnect the clutch links from the clutch.
S 355-132
(2)
Remove the bolts, washers, and nuts to disconnect the control rods from the clutch.
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757 MAINTENANCE MANUAL
S 225-145
(3) Measure the clutch slip load.
CAUTION: DO NOT ATTACH THE SAFETY WIRE TO THE CLUTCH LINK ATTACH
_______ BOLT HOLE. THE BEARING CAN BE DAMAGED IF THE BOLT HOLE IS USED AS AN ATTACH POINT.
(a)
Attach the safety wire to the top of the clutch near the clutch link attach bolt hole.
(b)
Wind the safety wire around the clutch outer diameter in the CCW direction (Fig. 501).
(c)
Attach the spring scale to the safety wire.
NOTE: Before applying a load, make sure that the safety wire
____ is on the outer diameter of the clutch.
(d) Apply a load to the scale to cause the clutch to slip in the CCW direction. Record the clutch slip load measurement.
NOTE: The clutch slip load should be 18 pounds minimum.
____
(e)
Wind the safety wire around the clutch outer diameter in the CW direction (Fig. 501).
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