S 164-042
(2)
Clean the pressure switch and mounting bracket faying surfaces to make sure there is a good electrical bond (AMM 20-10-22/021).
S 424-043
(3)
Put the inner half clamp around the pressure switch. Move the switch and the half clamp together in position on the mounting bracket.
S 434-044
(4)
Put the outer half clamp around the pressure switch and loosely install the two bolts and washers.
S 434-045
(5)
Install the three nuts, washers and bolts on the mounting bracket, then tighten the half-clamp bolts (AMM 70-51-00/201).
(6)
Install the electrical connector (AMM 70-50-02/201).
S 434-046
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30-21-01
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757 MAINTENANCE MANUAL
S 434-051
(7)
Install the internal relief bolt, with a flat washer between the bolt and the interconnecting tube, and between the interconnecting tube and the pressure switch (AMM 70-51-00/201).
S 414-053
(8)
Close the left fan cowl panel (AMM 71-11-04/201).
S 864-054
(9)
Remove the DO-NOT-CLOSE tags and close these P11 panel circuit breakers:
(a)
11C27 or 11C26, ENG ANTI-ICE LEFT
(b)
11C28 or 11C27, ENG ANTI-ICE RIGHT
S 704-055
(10) Do the Test paragraph.
TASK 30-21-01-404-038
5. Install the Low Pressure Switch (Fig. 401)_______________________________
A. References
(1)
AMM 20-10-22/701, Metal Surfaces Cleaning/Painting
(2)
AMM 70-50-02/201, Connection of Electrical Plugs
(3)
AMM 70-51-00/201, Torque Tightening Technique
(4)
AMM 71-11-04/201, Fan Cowl Panels
B. Access
(1)
Location Zones
413 No. 1 Power plant
423 No. 2 Power plant
(2)
Access Panels
413AL Fan cowl panel (Left)
423AL Fan cowl panel (Right)
C. Procedure - Install the Low Pressure Switch
S 094-070
(1)
Remove the covers from the openings and connectors.
S 164-071
(2)
Clean the pressure switch and mounting bracket faying surfaces to make sure there is a good electrical bond (AMM 20-10-22/201).
S 424-072
(3) 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：757 AMM 飛機維護手冊 防冰和排雨 CHAPTER 30 - ICE AND RAIN PROTECTION(61)
