TASK 24-11-21-400-801
3. Integrated Drive Generator (IDG) Air/Oil Cooler - Installation
(Figure 401 and Figure 402)
A. General
(1) The IDG air/oil cooler is an oil-to-air heat exchanger that uses bypass fan air to cool the IDG
cooling oil system.
(2) The IDG air/oil cooler is found inside the fan case and to the left of the 6 o'clock strut.
(3) For the procedure the IDG air/oil cooler will be referred to as the cooler.
B. References
Reference Title
12-13-21-600-801 IDG Servicing (Oil Fill) (P/B 301)
20-30-51-910-801 Miscellaneous Materials (P/B 201)
70-20-01-800-804-F00 Lockwire Installation (P/B 201)
71-00-00-800-811-F00 Power Plant Test Reference Table (P/B 501)
71-11-02-410-801-F00 Close the Fan Cowl Panels (P/B 201)
78-31-00-010-804-F00 Close the Thrust Reverser (Selection) (P/B 201)
C. Consumable Materials
Reference Description Specification
D00068 Oil - Aircraft Turbine Engine, Synthetic Base MIL-PRF-23699 Class
STD (Standard)
D00071 Oil - Aircraft Turbine Engine, Synthetic Base MIL-PRF-7808 Grade 3
D00504 Grease - Petrolatum VV-P-236
G01912 Lockwire - MS20995NC32, Monel - 0.032 Inch
(0.8128 mm) Diameter
NASM20995
D. Expendables/Parts
AMM Item Description AIPC Reference AIPC Effectivity
1 Cooler 24-11-21-01-020 ILF 401, 406, 409, 412
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-11-21
Page 407
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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