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A
757 MAINTENANCE MANUAL
LE SLAT PDU
TE FLAP PDU
SEE A
PDU BYPASS VALVE SEE B
INSTALL A PDU LOCK
TE FLAP PDU (FRONT VIEW) MANUAL OVERRIDE A
LEVER
PDU BYPASS VALVE B
Maintenance Practices for the TE Flap Figure 201
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A
757
MAINTENANCE MANUAL
AMBER TRAILING EDGE LIGHT
FLAP POSITION
INDICATOR
POSITION SELECTOR SWITCH FOR THE FLAP/SLAT ALTERNATE
ARMING SWITCH FOR THE FLAP ALTERNATE DRIVE
ARMING SWITCH FOR THE SLAT ALTERNATE DRIVE CONTROL STAND
TE FLAP INDICATORS
B
C
Controls for the Trailing Edge Flap Figure 202
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A
757
MAINTENANCE MANUAL
TE FLAP PDU
SEE A
TORQUE
TUBE
ALTERNATE
DRIVE MOTOR
INBD
PDU LOCK
INSTALLATION
SEE B
TE FLAP PDU (AFT VIEW)
A
TORQUE TUBE
PDU TIGHTEN THE STRAP
TO HOLD THE PIN
IN POSITION
ALTERNATE
DRIVE MOTOR
PDU
FWD INBD
PDU LOCK INSTALLATION PDU LOCK INSTALLATION
(OUTBOARD VIEW) (AFT VIEW)
B B
PDU Lock for the TE Flap PDU
Figure 203
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757
MAINTENANCE MANUAL
S 212-012
(3) If the alternate system for the trailing edge (TE) flaps is armed, make sure the position selector switch for the flap/slat alternate drive, on the first officers main instrument panel, P3, and the TE flap position are the same.
S 212-013
(4) If the alternate system for the TE flaps is not armed, make sure the position of the flap control lever and the position of the TE flaps are the same.
S 862-014
(5) Open these circuit breakers on the overhead panel, P11, and attach DO-NOT-CLOSE tags: (a) 11B18, WARN ELEX B (b) 11D31, HYDRAULICS PTU CONT (c) 11J18, FLAP LOAD RELIEF (d) 11J33, WARN ELEX A
S 862-015
(6) Open this circuit breaker on the P11 panel, and install a circuit breaker lock:
(a) 11H23, FLAP/SLAT ALTN DR SHUTOFF ARM
S 862-016
(7) Open these circuit breakers on the main power distribution panel, P6, and install circuit breaker locks: (a) 6D20, ALTN SLAT PWR (b) 6D23, ALTN FLAP PWR
S 862-017
(8) If the power from the left hydraulic system is not necessary, remove the power from the left hydraulic system (Ref 29-11-00).
S 862-018
(9) If the power from the left hydraulic system is necessary, to give power to other systems, move the manual override lever on the PDU bypass valve to the No. 1 (bypass) position.
S 492-032
(10)
Safety the manual override lever in this position. S 492-019
(11)
Install a PDU lock in the TE flap PDU (Fig. 203).
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