(2)
The flange
(3)
The air tube.
TASK 75-33-00-206-001-C00
2. Examine the Bleed Bias Sensor
_____________________________
A. References
(1)
AMM 75-33-01/401, Bleed Bias Sensor
(2)
AMM 78-31-00/201, Thrust Reverser System
B. Access
(1)
Location Zones 506 Engine No. 1 - 9th stage ducting at 4 o'clock position 606 Engine No. 2 - 9th stage ducting at 4 o'clock position
(2)
Access Panels 5783L/5739L Thrust Reverser Halves - Engine No. 1 5838R/5839R Thrust Reverser Halves - Engine No. 2
C. Procedure
S 016-007-C00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 TO OPEN THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY TO PERSONS OR DAMAGE TO THE EQUIPMENT COULD OCCUR.
(1)
Open the thrust reverser halves (AMM 78-31-00/201).
S 216-003-C00
(2)
Do a visual inspection of the sensor housing and flange and look for the items that follow (Fig 601):
(a)
Cracks - If you find cracks, replace the sensor.
(b)
Pits, scratches and oxidation - There is no limit on the number which are permitted on the exterior surface.
(c)
Pits, scratches, oxidation and dents on the interior surface:
1) It is permitted in Area C, if the damage is not greater than 0.005 inch (0.127 mm) in depth. a) Remove the high metal.
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HIGH PRESSURE COMBUSTIONCOMPRESSOR (HPC) CASEBLEED PORT
A
SEE A
A
9TH-STAGE 9TH-STAGE
FLANGE DUCT
BLEED BIAS SENSOR
B A
INNER
VENTURI
AREA
VENTURI EXIT C AREA SEALING F
AREA AREA E SURFACE
D AREA 1.75 INCHES
C (44.4 mm)
AREA HCOMPRESSOR BLEED PRESSURE (CBP) TUBING ____9TH-STAGE DUCT FLANGENOTE:TO MEC NOT SHOWN FOR CLARITY.
AREA H
B B-B
BLEED BIAS SENSOR A-A
GMM-1105306-00-BBleed Bias Sensor System Figure 601
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2) If the above damage is found in Area D, replace the sensor (AMM 75-33-01/401). 3) If the above damage is found in Area E, replace the sensor (AMM 75-33-01/401).
(d)
Nicks or damage to Diameter F:
1) It is permitted on the outer edge and center area of
diameter F.
2) If the above damage is found on the edge of the inner venturi throat, replace the sensor (AMM 75-33-01/401).
(e)
Scratches on the sealing surfaces:
1) It is permitted, if the damage is not greater than
0.002 inch (0.051 mm) in depth.
a) Remove the high metal.
(f)
Plugs in Area H that are loose:
1) If the plugs are loose, replace the sensor
(AMM 75-33-01/401).
(g)
Damage to the threads:
1) If the above damage is found, replace the sensor (AMM 75-33-01/401).
(h)
A blocked air passage from the the inner venturi to the port:
1) If the air passage is blocked, blow shop air through the port to clear the blockage. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300 400 500 AMM 飞机维护手册 空气 AIR(123)
