27-51-00
 ALL  ú ú 01 Page 515 ú May 20/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 H. TE Flap System for Primary Hydraulic Operation - Test
 NOTE: Make sure the TRAILING EDGE light on the P3 does not come on and
____
 that no TE flap messages come on the EICAS display on 2.

 S 715-149
 (1)  Do the hydraulic operation test that follows:
 CAUTION: CLOSE THE ENGINE FAN DUCT COWLING BEFORE THE LE SLATS ARE
_______ OPERATED. IF THIS COWLING IS OPENED THE SLATS CAN RUN INTO THE COWLING WHICH CAN CAUSE DAMAGE TO THE SLATS OR COWLING.
 (a)  
Put the flap control lever in the 1-unit detent.

 (b)  
As the flaps and slats start to extend, make sure the L and R needles on the flap position indicator, on the first officer's main instrument panel, P3, move very quickly to a position between the UP and the 1-unit position.

 (c)  
When the flaps stop at the 1-unit position, make sure the L and R needles on the flap position indicator move very quickly to the 1-unit position.

 (d)  
Make sure the flaps are in correct positions per Table 1.

 (e)  
Put the flap control lever in the 5, 15, 20, 25 and 30-unit detents and do a check at each detent position as follows: 1) Make sure the flaps stop at the correct position for the

 flap control lever. 2) Make sure the flaps are in the correct position for the indicator needles. 3) Make sure both indicator needles show the same flap position as the flaps.

 (f)  
Push the test switch for the flap load relief with the flaps in the 30-unit position.

 (g)  
Make sure flaps retract to the 25-unit position.

 (h)  
Release the test switch.

 (i)  
Make sure the flaps extend to the 30-unit position.

 (j)  
Put the flap control lever in the zero (FLAPS UP) detent. Make sure the flaps and slats retract fully.

 I.
Flap/Slat Alternate-(Electric) Drive System - Test

 NOTE: Make sure the TRAILING EDGE and LEADING EDGE lights on the P3
____ panel do not come on, and that no TE flap or LE slat messages come on the EICAS display.
 S 865-192
 (1)  Make sure the TE flap system is as follows:
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 27-51-00
 ALL  ú ú 01 Page 516 ú Sep 20/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL

 CAUTION: AFTER THE ALTERNATE DRIVE MOTOR HAS RUN FOR 12 MINUTES (2
_______ FLAP CYCLES), DO NOT OPERATE THE MOTOR FOR 3 MINUTES. YOU CAN CAUSE DAMAGE TO THE MOTOR IF YOU LET IT RUN CONTINUOUSLY FOR MORE THAN 12 MINUTES.
 (a)  
Make sure the flap control lever, flaps, and slats are in the UP position.

 (b)  
Make sure the position selector switch for the flap/slat alternate drive is in the NORM position.

 (c)  
Push the LE ALTN (slat alternate drive arming) switch on P3 panel and make sure the switch light comes on.

 S 715-006
 (2)  
Do the FSEU BITE procedure on FSEU-2 and FSEU-3 (FIM 27-51-00/101, Fig. 104).

 S 715-193

 (3)  
Do the Flap/Slat Alternate Drive System test as follows:

 (a)  
Push the TE ALTN (flap alternate-drive arming) switch on the P3 panel and make sure the switch light comes on.

 (b)  
Turn the alternate flaps/slats position selector switch to the 1-unit position.

 (c)  
Make sure the L and R needles on the flap position indicator move very quickly to the 1/2 position when the flaps start to extend.

 (d)  
Make sure the L and R needles on the flap position indicator move very quickly to the 1 position when the flaps extend to the 1-unit position.

 (e)  
Turn the position-selector switch to the 5 and 15 unit positions.

 NOTE: Let the flaps extend and stop at each position before
____ you move the position selector switch to the next position.
 (f)  
　
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