S 094-027
(2)
Remove the control wheel torque and the force test adapter from the aileron control wheel.
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A
737-300/400/500MAINTENANCE MANUAL
AILERON POWER CONTROL UNIT - REMOVAL/INSTALLATION
_________________________________________________
1. General_______
A. There are two tasks in this procedure. There is one task for the removal and one task for the installation of the power control unit of the aileron.
B. The two power control units supply hydraulic power to the ailerons. The power control unit at the bottom is connected to hydraulic system A. The power control unit at the top is connected to hydraulic system B.
TASK 27-11-71-004-014
2. Aileron Power Control Unit Removal__________________________________
A. References
(1)
AMM 27-11-00/201, Aileron and Aileron Trim Control System
(2)
IPC 27-11-14-01, Fig. 1
(3)
OHM 27-37-09
B.
Access
(1)
Location Zone
216 Main Wheel Well, LH
217 Main Wheel Well, RH
C.
Procedure
S 864-001
(1)
Do this task to depressurize hydraulic systems A and B: "Aileron Hydraulic Systems A and B Depressurization" (AMM 27-11-00/201).
S 034-002
(2)
Disconnect the hydraulic hoses at the inlet and outlet ports of the power control unit.
(3)
Install plugs in the hydraulic hoses.
(4)
Disconnect the electrical connector, if it is installed.
S 024-029
(5)
Remove the protective boot with the steps that follow (Detail D, Fig./401):
(a)
Remove the two straps from the inboard end of the boot and one strap from the outboard end of the boot.
S 434-003
S 034-004
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737-300/400/500MAINTENANCE MANUAL
VALVE CONTROL ROD END
AILERON POWER CONTROL UNIT
VALVE CONTROL ROD
FWD
OUTBOARDSEE A
END STRAP INBOARD END STRAPS
PROTECTIVE
BOOT
D
AILERON POWER
POWER
CONTROL UNIT
CONTROL UNIT
(SYSTEM B)
ATTACH BOLT
AILERON
SEE D
CONTROL PRESSUREQUADRANT DECK
CRANK
SAFETY SPRING LINK
CARTRIDGE
SEE D CONTROL UNIT
A
ATTACH BOLT
A
AILERON BUS DRUMS
INPUT ROD SEE C
CRANK AILERON POWER CONTROL UNIT (SYSTEM A)VALVE CONTROL ROD (2 LOCATIONS) REACTION LINKS SEE B
FWD INBD
A
Aileron Power Control Unit Installation
Figure 401 (Sheet 1)
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A 737-300/400/500MAINTENANCE MANUAL
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