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757
MAINTENANCE MANUAL
NO. INDEX 1 PART NAME DIM. ASSY SWING LINK BEARING OD ID INCHES MAXIMUM (mm) MINIMUM INCHES DIAMETER DESIGN LIMITS (mm) 0.6875 (17.463) (17.475) 0.6880 0.68750.6871 (17.452) (17.463) WEAR LIMITS WEAR INCHES DIMENSION PERMITTED (mm) (17.508) 0.6893 (17.417) 0.6857 INCHES CLEARANCE DIAMETER MAXIMUM (mm) 0.0018 (0.046) REPLACE WORN PART X X INSTR REPAIRREPAIR WORN PART
2 ASSY SWING LINK BEARING ID OD 1.2500 (31.750) (31.763) 1.2505 1.2496 (31.740) 1.2500 (31.750) (31.796) 1.2518 (31.704) 1.2482 0.0018 (0.046) X X
3 CRANK ASSY BUSHING OD ID 0.4370 (11.100) (11.113) 0.4375 0.43700.4365 (11.087) (11.100) (11.151) 0.4390 (11.049) 0.4350 0.0020 (0.051) X X
4 ASSY SWING LINK BEARING OD ID 0.6875 (17.463) (17.475) 0.6880 0.68750.6871 (17.452) (17.463) (17.508) 0.6893 (17.417) 0.6857 0.0018 (0.046) X X
5 ASSY SWING LINK BEARING OD ID 0.9014 (22.896) (22.908) 0.9019 0.90140.9010 (22.885) (22.896) (22.941) 0.9032 (22.850) 0.8996 0.0018 (0.046) X X
6 ASSY SUPPORT BUSHING OD ID 0.3745 (9.512) (9.525) 0.3750 0.37450.3740 (9.500) (9.512) (9.563) 0.3765 (9.462) 0.3725 0.0020 (0.051) X X
7 ASSY SUPPORT BEARING OD ID 0.9014 (22.896) (22.908) 0.9019 0.90140.9010 (22.885) (22.896) (22.941) 0.9032 (22.850) 0.8996 0.0018 (0.046) X X
PCA Input Linkages Wear Limits
Figure 602 (Sheet 3)
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757 MAINTENANCE MANUAL
ELEVATOR POWER CONTROL ACTUATOR (PCA) INPUT LINKAGE - REMOVAL/INSTALLATION
__________________________________________________________________________
1. General_______
A. This procedure contains steps to remove and install the input linkages on the power control actuators (PCAs) for the elevator control system.
TASK 27-31-06-024-001
2. Remove the PCA Input Linkage____________________________
A. Equipment
(1)
Lock Assembly, PCA-B27009-2, from Elevator PCA
Lockout Equipment B27009-12
B.
References
(1)
06-42-00/201, Empennage Access Doors and Panels
(2)
24-22-00/201, Electrical Power - Control
(3)
27-61-00/201, Spoiler/Speedbrake Control System
(4)
29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
C.
Access
(1)
Location Zones 211/212 Control Cabin 335/345 Horizontal Stabilizer, Rear Spar to Trailing Edge
(2)
Access Panels
335DB/345DB Elevator PCAs
D.
Prepare for the Removal
S 864-002
(1) Supply electrical power (Ref 24-22-00).
S 864-003
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. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR
WHEN HYDRAULIC POWER IS SUPPLIED.
(2)
Pressurize the right and center hydraulic systems (Ref 29-11-00).
S 864-004
(3)
Move the stabilizer to the neutral position (6 units of trim).
S 864-005
(4)
Remove the pressure from the left, right, and center hydraulic systems (Ref 29-11-00).
S 864-006
(5)
Pull the control column full aft and use a rope to hold it in this position.
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