ENGINE COWL TAI VALVE - CLEANING/PAINTING
1. General
A. This procedure has this task:
(1) A cleaning of the honest orifice on the engine cowl thermal anti-ice valve.
TASK 30-21-11-100-801
2. Honest Orifice - Cleaning
Figure 701
A. General
(1) This procedure provides the steps necessary to remove, clean, and install the honest orifice on
those engine cowl TAI valves which have a removable honest orifice.
B. References
Reference Title
36-00-00-860-806 Remove Pressure from the Pneumatic System (P/B 201)
71-11-02-010-801-F00 Open the Fan Cowl Panels (P/B 201)
71-11-02-410-801-F00 Close the Fan Cowl Panels (P/B 201)
C. Tools/Equipment
Reference Description
STD-182
Cleaner - Ultrasonic
STD-6462
Bottle - Squeeze
STD-6638
Air Source - Compressed, Clean, Filtered, and Dry, 0 - 100 psi
D. Consumable Materials
Reference Description Specification
B50270 Cleaner - Medium Duty, Soak/Electrolytic,
Immersion Cleaner
BAC5749 Method 3
D50179 Compound - Lubricating (Lockrey Liqui-Moly
NV Thread Compound)
MIL-PRF-907
G01659 Swab - Cotton Or Rayon, (Disposable)
G50225 Lockwire - MS20995C20, Corrosion Resistant
Steel - 0.020 Inch (0.508 mm) Diameter
NASM20995
E. Location Zones
Zone Area
410 Subzone - Engine 1
420 Subzone - Engine 2
F. Prepare for the Cleaning
SUBTASK 30-21-11-870-001
(1) If not already done, do this task: Remove Pressure from the Pneumatic System,
TASK 36-00-00-860-806.
SUBTASK 30-21-11-860-018
(2) For the right fan cowl panel, do this task: Open the Fan Cowl Panels,
TASK 71-11-02-010-801-F00.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-21-11
Page 701
D633A101-ILF Oct 15/2016
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL; AIRPLANES WITH ENGINE COWL TAI
VALVE P/N 3215618-5
To Next Page
Loading...
