LIGHT MAINTENANCE MANUAL
TFE731-5/-5AR/-5R (ATA NUMBER 72-02-75)
2.Preservation
Table 302. Equipment and Materials
Equipment or Material |
Manufacturer |
NOTE: Equivalent substitutes may be used for listed items.
Barrier material (MIL-PRF-121) |
Commercially available |
Barrier material (MIL-PRF-131, Type I, Class III) |
Commercially available |
Desiccant (MIL-D-3464, Type I) |
Commercially available |
Humidity indicator card (MX-56789) |
AGM Container Controls Inc, P.O. Box 40020, |
|
3526 E Fort Lowell, Tucson, AZ 85717-0020 |
Humidity indicator plug (Type II) |
Commercially available |
(SAE AS26860) or (HUM 2156) |
|
Mineral base oil (Grade 1010) (MIL-PRF-6081) (Alternate for Oil (Univolt 60 Preservative))
Oil (Univolt 60 Preservative)
Sealer (Metric Model HS-B)
Commercially available
Exxon Co, USA, P.O. Box 4803, 600 Jefferson St, Houston, TX 77210-4803
Doboy Inc, 869 S Knowles Ave, New Richmond,
WI 54017-1745
A.Installed Engine Preservation Instructions (Six Months or Less)
WARNING: MOST PRESERVATIVE SOLUTIONS ARE FLAMMABLE AND SHOULD NOT BE USED EXCESSIVELY NOR APPLIED TO A HOT ENGINE. ALLOW ENGINE TO COOL FOR A MINIMUM OF 10 MINUTES BEFORE USING PRESERVATIVE MATERIAL ON ANY PART OF THE ENGINE.
(1)Allow engine to cool.
(2)Inspect engine to assure that inlet area is clean and dry.
CAUTION: AIRCRAFT INLET AND TAILPIPE PLUGS FOR ENGINE SHALL BE INSTALLED PRIOR TO WASHING THE AIRCRAFT OR IF AIRCRAFT IS TO BE PARKED UNSHELTERED WHEN NOT IN SERVICE. TO MINIMIZE OR PREVENT CORROSION, WATER OR CLEANING SOLUTION SHALL NOT BE PERMITTED TO ENTER THE ENGINE INLET AREA.
(3)Install inlet and tailpipe plugs.
72-00-00 Page 303
Nov 11/05
E Honeywell International Inc. Do not copy without express permission of Honeywell.
LIGHT MAINTENANCE MANUAL
TFE731-5/-5AR/-5R (ATA NUMBER 72-02-75)
CAUTION: DO NOT EXCEED MANUFACTURER’S RECOMMENDED DUTY CYCLE FOR STARTER.
2.A. (4) Every four weeks, with inlet and tailpipe plugs removed, motor engine with starter
sufficiently to achieve N1 rotation, observing manufacturers recommended duty cycle for starter.
(5)Repeat Steps (2) and (3).
(6)It is recommended that digital electronic engine control (DEEC) (76-10-02) be placed in air-tight bag containing desiccant for storage.
B.Installed Engine Preservation Instructions (More Than Six Months)
CAUTION: THE COMPRESSOR SECTION SHALL NOT BE SPRAYED WITH ANY CORROSION-PREVENTIVE COMPOUND. NO HYDROCARBONS OR OILS, INCLUDING DE-ICING/ANTI-ICE FLUID SHALL EVER BE SPRAYED INTO INLET, EXHAUST, SCOOPS, VENTS, AND DRAINS DURING ENGINE OPERATION. UNCONTROLLED COMBUSTION COULD BE A POSSIBLE RESULT. AVOID OPERATING ENGINE DURING AIRCRAFT DE-ICING.
(1)Disconnect fuel control discharge line between oil temperature regulator (fuel/oil cooler) and fuel control and connect a line to the fuel control discharge port to drain overboard.
(2)Disconnect fuel supply line at inlet connection on fuel pump and connect supply of oil. Supply oil under two to five pounds per square inch pressure.
CAUTION: DO NOT EXCEED MANUFACTURER’S RECOMMENDED DUTY CYCLE FOR STARTER-GENERATOR.
(3)De-energize ignition system. Advance power lever to idle position. Motor fuel control until clean oil flows from overboard drain line. Fuel control may be motored by motoring engine, observing motoring procedures established by the particular installation.
(4)Stop motoring engine, disconnect oil supply lines from fuel inlet port on fuel pump and cap inlet port. Allow residual oil to drain from fuel control and lines, then disconnect overboard drain line and reconnect fuel line between fuel control and fuel/oil cooler.
NOTE: Use of corrosion-preventive compound in the engine lubrication system for preservation is not required. Specified engine lubricating oil is a satisfactory corrosion preventive.
(5)Wipe all fuel and oil from engine. Secure warning tags to engine and as required to indicate preservation procedures have been performed and that engine shall not be operated except as noted until depreservation procedures are performed. Maintain engine motoring record indicating engine shall be motored every four weeks.
(6)Install inlet and tailpipe plugs.
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Jan 31/00
E Honeywell International Inc. Do not copy without express permission of Honeywell.
LIGHT MAINTENANCE MANUAL
TFE731-5/-5AR/-5R (ATA NUMBER 72-02-75)
CAUTION: TO PREVENT LOSS OF PRESERVATION OIL FROM FUEL CONTROL, 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 HYDROCARBONS OR OILS, INCLUDING DE-ICING/ANTI-ICE FLUID SHALL EVER BE SPRAYED INTO INLET, EXHAUST, SCOOPS, VENTS, AND DRAINS DURING ENGINE OPERATION. UNCONTROLLED 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 entrance 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.
72-00-00 Page 305
Jan 16/04
E Honeywell International Inc. Do not copy without express permission of Honeywell.
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