CAUTION
USE TWO WRENCHES TO LOOSEN THE TUBE COUPLING NUTS. USE
ONE TO HOLD THE UNION, AND THE OTHER TO LOOSEN THE
COUPLING NUT. IF YOU DO NOT USE TWO WRENCHES, DAMAGE TO
THE TUBE AND UNIONS CAN OCCUR.
(a) Disconnect the oil-in line and the oil-out line from the cooler [1].
(b) If the bolts [3] are lockwired in-place, remove the lockwire.
(c) Remove the eight bolts [3] and washers [4] that attach the cooler [1] to the engine fan
case.
(d) To remove the cooler [1], lift it free of the engine fan case.
(e) Remove the gasket [2].
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-11-21
Page 404
D633A101-ILF Jun 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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