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LIGHT MAINTENANCE MANUAL
TFE731-5/-5AR/-5R (ATA NUMBER 72-02-75)
Page 30
5
Jan 16/0
4
72-00-00
E Honeywell International Inc. Do not copy without express permission of Honeywell.
CAUTION
: TO PREVENT LOSS OF PRESERVATION OIL FROM FUEL CON-
TROL, DO NOT OPEN FUEL SHUTOFF VALVE OR MOVE
THROTTLE WHILE MOTORING ENGINE.
2. B. (7) Every four weeks motor engine with starter sufficiently to obtain N1 rotation, observing
starter manufacturers recommended duty cycle. Ensure fuel shutoff valve is in cut-off
position.
(8) It is recommended that digital electronic engine control (76-10-02) be placed in air-tight
bag containing desiccant for storage.
C. Engine Preservation Instructions (Engine Removed from Aircraft)
CAUTION
: THE COMPRESSOR SECTION SHALL NOT BE SPRAYED WITH
ANY CORROSION-PREVENTIVE COMPOUND. NO HYDRO-
CARBONS OR OILS, INCLUDING DE-ICING/ANTI-ICE FLUID
SHALL EVER BE SPRAYED INTO INLET, EXHAUST, SCOOPS,
VENTS, AND DRAINS DURING ENGINE OPERATION. UNCON-
TROLLED COMBUSTION COULD BE A POSSIBLE RESULT.
AVOID OPERATING ENGINE DURING AIRCRAFT DE-ICING.
(1) Prior to removing engine from aircraft perform fuel control preservation procedures as
outlined in Steps
B.(1) through B.(5).
(2) Drain engine lubricating oil observing procedures in Oil Servicing.
(3) Remove engine from aircraft and install inlet and tailpipe plugs.
(4) Wrap engine in barrier material (MIL-PRF-121) and seal all openings to prevent en-
trance of foreign material.
(5) Install engine into barrier material (MIL-PRF-131, Type I, Class III) with four bags of
desiccant and two humidity indicator cards. Install humidity indicator plug into barrier
material (MIL-PRF-131, Type I, Class III). Seal barrier material (MIL-PRF-131, Type I,
Class III) seam using sealer.
(6) Cut opening into barrier material (MIL-PRF-131, Type I, Class III) and insert vacuum
line. Evacuate air from barrier material (MIL-PRF-131, Type I, Class III) until barrier
material (MIL-PRF-131, Type I, Class III) is drawn snugly to engine. Remove vacuum
line and seal opening in barrier material (MIL-PRF-131, Type I, Class III) using heat
gun.
(7) Record preservation in Engine Log Book.
(8) Check humidity indicator plug and humidity indicator cards every 30 days. If indicator
plug or card changes from blue to pink, bag must be opened and engine inspected for
rust or corrosion. If rust or corrosion is evident, take appropriate corrective action.
Preserve engine in accordance with Steps
(4) through (8) after inspection completed.