(c) Make sure that all internal passages and recesses are completely cleaned and dry. Blow out passages and recesses with dry air.
Subtask 70-51-00-869-057
B. Quality assurance.
(1) Check part under ultraviolet light to make sure all penetrants and developer materials have been removed.
(2) Assure that the residues of processing compounds are completely removed from titanium and titanium alloy parts.
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_______________________________________________________________________________ TASK 70-60-00-910-041 Nacelle Maintenance Practices
1. Reason for the Job
__________________
This section contains standard practices for use in maintenance and repair tasks on the engine nacelle. Read the applicable section of this manual to become acquainted with the items to be installed and the procedures to be followed before work is done on the engine.
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
70-60-00-991-300 Fig. 201 70-60-00-991-301 Fig. 202 70-60-00-991-302 Fig. 203
3. Job Set-up
__________ Subtask 70-60-00-869-054
A. Not Applicable.
4. Procedure
_________ Subtask 70-60-00-640-051
A. Lubrication
(1) Lubricate packings with petrolatum or the fluid contained in the system that is being serviced (i.e. hydraulic fluid for the hydraulic system) before installation if not specified.
(2) Apply grease or anti-seize compound to fasteners as specified.
(3) Lubricate all pneumatic duct couplings with MIL-L-23398.
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B. Electrical Wire Harness Installation
(1) Make sure there is a sufficient drop in the wire harness to prevent tightness on the wire harness connectors and receptacles.
(2) Make sure there is maximum clearance between wire harnesses and hot sections of the engine.
(3) Install protective covers over the open ends of connectors and receptacles.
(4) Install connectors carefully to prevent damage to connector pins.
(5) Tighten self-locking electrical connectors with rubber nosed connector pliers.
(6) Remove oil, grease, dirt, and other surface contaminants with a clean cotton cloth dampened with trichloroethane.
(7) Remove paint and primer coatings from attach hole areas before installation of jumpers.
(8) Clamp sizes needed for installation can change from those given in a procedure.
(a) Differences in wire diameter between different vendors'wire, as well as differences in the position of the wire bundle, can change the bundle size at any given point.
(b) Installation of a wire bundle can require a different clamp size, either one size larger, or one size smaller than the size shown.
(c) If necessary, wind tape (material No. CP2208) around the harness at the location where the clamp is to be installed to make sure the clamp fits correctly.
(9) Make sure that the installation reference markers are in the correct position before you tighten the line blocks or clamps. To permit adjustment of the harness routing, the installation reference markers can be +/- 0.5 inch (12.7 mm) off-center in the clamp.
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Subtask 70-60-00-420-053
C. Tubes Installation
(1) Correctly align tubes between tube components to make sure the threaded parts are connected correctly.
(2) Install protective covers over open ends of tubes.
Subtask 70-60-00-911-054
D. Dissimilar Metals Protection WARNING : ETHYL ACETATE IS FLAMMABLE AND CLASSIFIED AS A HAZARDOUS 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM STANDARD PRACTICES - ENGINES(23)
