S 866-120
(16)
Move the applicable FLT CONTROL SHUTOFF L, R, or C switch on the P61 panel to OFF. Attach a DO-NOT-OPERATE tag and make sure the switch position light comes on.
NOTE: Make sure all the switches are in their OFF positions.
____
S 216-072
(17)
Make sure these circuit breakers on the P11 panel are open:
(a)
11H17, FLT CONT SHUTOFF TAIL LEFT
(b)
11H18, FLT CONT SHUTOFF TAIL CTR
(c)
11H28, FLT CONT SHUTOFF TAIL RIGHT
S 736-020
(18)
Do the elevator freeplay check again for each of the remaining PCAs. Make sure only one PCA (for each of the two elevators) is pressurized during the check.
G.
Put the Airplane Back to Its Usual Condition
S 866-021
(1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel:
(a)
11C12, STAB TRIM SHUTOFF LEFT
(b)
11C13, STAB TRIM SHUTOFF RIGHT
(c)
11H17, FLT CONT SHUTOFF TAIL LEFT
(d)
11H18, FLT CONT SHUTOFF TAIL CTR
(e)
11H28, FLT CONT SHUTOFF TAIL RIGHT
S 866-022
(2)
Move the RIGHT STAB TRIM SHUTOFF and the CENTER STAB TRIM SHUTOFF switches on the P10 panel to their NORM positions.
S 866-023
(3)
Remove the DO-NOT-OPERATE tags and move the FLT CONTROL SHUTOFF L, R, and C switches on the P61 panel to ON.
(4)
Remove electrical power if it is not necessary (Ref 24-22-00/201).
S 866-024
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27-02-00
ALL ú ú 01 Page 607 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
TASK 27-02-00-736-025
3. Rudder Freeplay - Check_______________________
A. General
(1)
Some freeplay in the PCA linkages is permitted, but the wear must be divided equally between the linkage components. If one component is worn more than the other components in the system, you must repair it.
B.
Equipment
(1)
Dial Indicator, Accurate to 0.001 inch
(0.025 mm) and a minimum stroke of 1 inch
(25.4 mm) - Commercially Available
(2) Device to Hold the Dial Indicator, tightly
against the fuselage
NOTE: A machine shop tool commercially
____ available (magnetic base with fixed rod and movable extension rod for dial indicator installation) can be used.
(3)
Spring Force Scale, Push-Type (0 to 150 Pound
(0-667 newtons) Range) - Commercially Available
C.
References
(1)
24-22-00/201, Electrical Power - Control
(2)
29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
D.
Access
(1)
Location Zone
325 Rudder
211 Control Cabin, Left
212 Control Cabin, Right
E.
Prepare for the Inspection/Check
S 866-026
(1) Supply electrical power (Ref 24-22-00/201).
S 866-015
WARNING: THE AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND
_______ THE STABLILIZER ARE FULLY POWERED SURFACES. MAKE SURE THAT ALL EQUIPMENT AND PERSONS ARE AWAY FROM THE CONTROL SURFACES BEFORE YOU SUPPLY THE HYDRAULIC POWER. INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
(2)
Supply pressure to the left hydraulic system (Ref 29-11-00/201).
S 866-097
(3)
Move the rudder pedals quickly for approximately 5 cycles and do this check:
(a)
Make sure the rudder pedals are in their neutral positions.
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