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LIGHT MAINTENANCE MANUAL
TFE731-5/-5AR/-5R (ATA NUMBER 72-02-75)
Page 30
8
Jan 31/0
0
72-00-00
E Honeywell International Inc. Do not copy without express permission of Honeywell.
CAUTION
: ALLOW THE ENGINE TO COOL APPROXIMATELY ONE HOUR
OR UNTIL ITT INDICATOR READS 100°C OR LESS.
NOTE
: Caution should be exercised during cold weather (below 0°C (32°F))
since equipment has no provisions to prevent freezing.
2. F. (4) Perform compressor rinse procedure.
CAUTION: REFER TO AIRCRAFT MAINTENANCE MANUAL FOR
STARTER DUTY CYCLE. DO NOT EXCEED STARTER
DUTY CYCLE AT ANY TIME DURING CLEANING PROCE-
DURE.
TO ELIMINATE BATTERY DISCHARGE DUE TO STARTER
MOTORING CYCLES, IT IS RECOMMENDED THAT A
GROUND POWER UNIT BE UTILIZED DURING THESE
OPERATIONS.
(a) Verify that ITT indicator reads 100°C or less.
(b) Verify that all bleed systems are closed and that power lever is in cut-off position.
NOTE
: Ensure that power lever is in cut-off position (no fuel) and ignition
system is turned off throughout rinse cycles.
If spray mix applicator nozzle is not properly angled, fan rotor
assembly will centrifuge fluid. (See Figure 302.)
(c) Energize starter and motor engine in accordance with Aircraft Maintenance
Manual. As engine high pressure spool starts to rotate, direct nozzle of spray
mix applicator as close as possible to base of fan rotor assembly blades at an
angle that is parallel to blade airfoil contour and blade base contour and open
water control valve on spray mix applicator to inject fresh water. Motor engine to
a minimum speed of ten percent N2 indication for 45 seconds or starter duty
cycle limit, whichever is less.
De-energize starter and continue to inject fresh water until engine rolls down
then shut off water control valve on spray mix applicator. Success of fresh water
inducement is noted by water being discharged from exhaust nozzle.
(d) Allow starter to cool in accordance with Aircraft Maintenance Manual. Allow
engine to drain induced water.