S 865-159
(8)
Open these circuit breakers on the overhead circuit breaker panel, P11, and attach a DO-NOT-CLOSE tag:
(a)
11C19, LANDING GEAR POS SYS 2 ALTN
(b)
11S23, LANDING GEAR POS SYS 2
S 865-140
(9)
Put the WING ANTI-ICE switch-light on the P5 panel in the ON position. Make sure the white ON light comes on.
S 215-020
(10)
Make sure the R VALVE light on the P5 panel comes on, and R WING ANTI-ICE shows on the EICAS display.
NOTE: The L VALVE light will go on and then go off.
____
S 215-021
(11) Make sure the position indicator on the left TAI valve shows the full open position.
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S 755-067
WARNING:_______ DO NOT TRY TO TIGHTEN CLAMPS OR FLANGES WHEN THE DUCTS ARE
PRESSURIZED. THE HOT PRESSURIZED AIR CAN CAUSE INJURY TO
PERSONS.
(12) Make sure there is not too much leakage at any duct position downstream of the left TAI valve.
NOTE: Some leakage is permitted, but no fast air movement should be
____ felt 12 inches from a leak.
S 215-023
(13) Make sure the pressure gage shows 13-20 psig.
NOTE: If the duct pressure is not 13-20 psig and no bad leaks are
____ found, replace the wing TAI valve.
S 865-024
(14)
Put the WING ANTI-ICE switch-light on the P5 panel in the OFF position. Make sure the ON light goes off.
S 215-025
(15)
Make sure the R VALVE light on the P5 panel goes off.
S 215-026
(16)
Make sure R WING ANTI-ICE does not show on the EICAS display.
S 865-014
(17)
Remove the DO-NOT-CLOSE tag and close these P11 panel circuit breakers:
(a) 11C19, LANDING GEAR POS SYS 2 ALTN
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(b) 11S23, LANDING GEAR POS SYS 2 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 防冰和排雨 CHAPTER 30 - ICE AND RAIN PROTECTION(14)
