(d) Disconnect the anti-ice forward sensor hose as follows:
NOTE: If there is an increase in anti-ice valve failures because of water wash, this task
recommends that you disconnect the forward sensor hose from the anti-ice
valve.
1) Disconnect the forward sense tube from the inlet anti-ice valve.
NOTE: Do not install a plug on the pressure sense tube. Let the tube hang free
when you do the water wash.
2) Install a protection cover on the inlet anti-ice forward sensor hose port of the inlet
anti-ice valve.
3) Release the ENG 1(2) ANTI-ICE push button switch.
4) Release the ENG 1(2) BLEED VALVE push button switch.
(e) Remove the cotter pin, washers, nut and bolt to disconnect the VBV feedback cable from
the VBV feedback lever.
(f) Remove the cotter pin, washers, nut and bolt to disconnect the VSV feedback cable from
the VSV feedback lever.
(g) Move the VSV lever to the full clockwise direction to open the VSV.
(h) Install lockwire to safety the lever.
(i) Move the VBV lever to the full counterclockwise direction close the VBV.
(j) Attach lockwire to secure the lever.
SUBTASK 72-00-00-417-011-G00
WARNING
OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO
PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
(6) Close the thrust reversers (PAGEBLOCK 78-31-00/201).
SUBTASK 72-00-00-417-054-G00
(7) Close the core cowl panels (PAGEBLOCK 71-11-06/201).
SUBTASK 72-00-00-417-012-G00
(8) Close the fan cowl panels (PAGEBLOCK 71-11-04/201).
F. Prepare the Solution to Clean the Engine
SUBTASK 72-00-00-117-014-G00
(1) If water will be used to clean the engine, do the steps that follow:
NOTE: You can use one of three solutions to clean the engine. Clean water can be used. If
the ambient temperature is below 40° F (5° C) use water mixed with alcohol, B00679
[C04-035]. A mixture of water and gas path cleaner, G02351 [C04-140]can be used if
the engine is very dirty.
(a) Use potable water only that is clean with no chlorine or other chemicals.
(b) For best results, heat the water to 150°-175°F (65°-80°C).
NOTE: Hot water cleans better than cold water.
SUBTASK 72-00-00-117-015-G00
(2) If the ambient temperature is below 40°F (5°C), then prepare 20 gallons (76 liters) solution of
water and alcohol, B50073 to clean the engine.
(a) 40°F (5°C) to 23°F (-5°C): 25 percent alcohol, B50073 to 75 percent water.
767
AIRCRAFT MAINTENANCE MANUAL
CF6-80A SERIES ENGINES
72-00-00
NoC
Page 705
D633T1B7 Aug 22/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ABX 001-007, 011, 012, 016-019, 021, 022, 025, 101,
109, 114, 115, 314-999
To Next Page
Loading...
