Cleaning of the Engine Gaspath [PW11]

TASK 72-00-00-100-802-A
Cleaning of the Engine Gaspath

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

WARNING: THERE IS A POSSIBLE HEALTH RISK TO PERSONNEL WHO DO MAINTENANCE TASKS AFTER A BIRD STRIKE. THE SAFETY MEASURES THAT FOLLOW ARE RECOMMENDED:

USE DISPOSABLE GLOVES.
USE CUT RESISTANT GLOVES OVER THE DISPOSABLE GLOVES.
USE A DISPOSABLE COVERALL IF THERE IS A RISK OF BODY CONTACT WITH THE BIRD REMAINS (ORGANIC MATTER) DURING FEATHER COLLECTION OR ENGINE CLEANING.
DO NOT USE PRESSURIZED AIR OR WATER TO CLEAN THE PARTS WHICH WERE IN CONTACT WITH THE BIRD.
REMOVE THE BIRD REMAINS AND PUT THEM IN A PLASTIC BAG.
DO NOT TOUCH YOUR FACE, EYES, NOSE, ETC. WITH YOUR GLOVES.
REMOVE THE GLOVES AND THE DISPOSABLE COVERALL AND PUT THEM IN THE SAME PLASTIC BAG AS THE REMAINS. SEAL THE BAG.
DISCARD THE BAG AS YOU DO FOR USUAL GARBAGE.
CAREFULLY WASH YOUR HANDS WITH SOAP AND WATER.

CAUTION: REFER TO SPOP 425 FOR ENGINES THAT GOT FIRE EXTINGUISHING AGENTS, HYDRAULIC FLUID, OIL OR FUEL ON THE GASPATH.

CAUTION: DO NOT USE THIS WATER WASH PROCEDURE IF THE AMBIENT AIR TEMPERATURE IS LESS THAN 40°F (4.4°C) WITHOUT ALCOHOL IN THE WATER. IF YOU DO NOT ADD ALCOHOL, ICE CAN FORM AND CAUSE ENGINE DAMAGE.

CAUTION: DO NOT USE THIS WATER WASH PROCEDURE (WITH OR WITHOUT DETERGENTS) FOR ENGINES WITH DRY CHEMICAL POWDER FIRE EXTINGUISHING AGENTS IN THE GASPATH. THESE AGENTS ARE NOT WATER SOLUBLE. IF YOU DO WATER WASH THE ENGINE WITH THESE AGENTS IN THE GASPATH, THE AGENTS WILL STICK OR CAKE ON THE SURFACES OF THE GASPATH PARTS.

ZONE: 400

1. Reason for the Job
Use this procedure to clean the engine gaspath for performance improvement.

NOTE: Experience has shown that local water supply pressure will provide enough flow. You must use one of the carts if:

You use a cleaning solution.
You use alcohol for antifreeze.
There is no clean tap water source at the wash site.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 1M(3 FT)
No specific	2	BOTTLE - SAMPLE
No specific	AR	CAP - PROTECTION
No specific	1	CART - GROUND, NITROGEN
No specific	1	GLOVES - PROTECTIVE
No specific	1	MARKER - FELT TIP
No specific	1	STOPWATCH
No specific	AR	WATER SOURCE - GROUND
PWA104744	2	CART-WATER WASH
PWA111606	2	NOZZLE SET, WATER FLOW
PWA83298	2	DISTRIBUTOR-WATER WASH

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P05-005)	cloth, cotton, lint free
(Material No.P05-058)	brush, plater's tampico
(Material No.P05-472)	marker - high purity, black, trace element certified
(Material No.P11-014)	alcohol, isopropyl
(Material No.P11-021)	cleaner, gaspath (detergent-type)
(Material No.P11-049)	cleaner, aqueous

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 70-27-00-910-803-A	SPS 87 - Gaspath/Compressor Solution
TASK 71-00-00-710-806-A	Power Assurance Test
TASK 71-00-00-720-809-A	Test No. 2 - Engine Motor Leak Test (Dry Method)
TASK 71-00-00-860-814-A	Shutdown of the Engine
TASK 71-00-00-860-817-A	Motor the Engine (Dry Method)
TASK 71-00-00-860-823-A	Start the Engine (Normal Automatic Start)
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 73-21-01-000-801-A	Removal of the Electronic Engine Control (EEC)
TASK 73-21-01-400-801-A	Installation of the Electronic Engine Control (EEC)
TASK 73-21-23-000-802-A	Removal of the Burner Pressure Sense Tube (AS11)
TASK 73-21-23-400-801-A	Installation of the Burner Pressure Sensor
TASK 73-21-23-400-802-A	Installation of the Burner Pressure Sense Tube (AS11)
TASK 75-26-22-000-801-A	Removal of the Buffer Air Valve Pressure Sensor
TASK 75-26-22-400-801-A	Installation of the Buffer Air Valve Pressure Sensor
TASK 75-32-21-000-801-A	Removal of the High Pressure Compressor (HPC) Bleed Valve Air Pressure Sensor (Passive)
TASK 75-32-21-400-801-A	Installation of the High Pressure Compressor (HPC) Bleed Valve Air Pressure Sensor (Passive)
TASK 75-32-22-000-801-A	Removal of the HPC Bleed Valve Air Pressure Sensor - Active
TASK 75-32-22-400-801-A	Installation of the HPC Bleed Valve Air Pressure Sensor - Active
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
TASK 79-00-00-281-804-A	Sampling of the Engine Oil
TASK 79-00-00-610-801-A	Check and Fill the Engine Oil
TASK 79-00-00-680-801-A	Drain the Engine Oil
Cleaning of the Engine Gaspath - Water Wash Cart
Cleaning of the Engine Gaspath - Wash Nozzle Location

3. Job Set-up
Subtask 72-00-00-941-206-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 72-00-00-010-277-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR.
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.

Subtask 72-00-00-040-138-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser for Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 72-00-00-010-278-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR.

Subtask 72-00-00-861-057-A ** ON A/C NOT FOR ALL

E. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 72-00-00-860-112-A ** ON A/C NOT FOR ALL

F. Aircraft Maintenance Configuration
(1) On the ANTI-ICE section of panel 25VU, make sure that the ANTI ICE/ENG 1(2) pushbutton switch is OFF (the ON legend of the ANTI ICE/ENG 1(2) pushbutton switch is OFF).
(2) On the AIR COND panel 30VU, make sure that ENG 1(2) BLEED pushbutton switch is OFF (the OFF legend of the ENG1(2) BLEED is ON).
(3) On the AIR COND panel 30VU, make sure that PACK 1 and PACK 2 pushbutton switches are OFF (the OFF legend of the PACK 1 and the PACK 2 pushbutton switches are ON).

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 72-00-00-110-089-A ** ON A/C NOT FOR ALL

A. Preparation for the Water Wash
(1) Make sure that the left and right-side fan cowl-doors are open (Ref. AMM TASK 71-13-00-010-802).
(2) Make sure that the left and right-side thrust-reverser cowl-doors are open (Ref. AMM TASK 78-36-00-010-802).
(3) Collect a sample of an engine oil (Ref. AMM TASK 79-00-00-281-804):
(a) Collect a 4.0 oz (113.40 g) sample of engine oil in the BOTTLE - SAMPLE.
(b) Label the BOTTLE - SAMPLE with a P05-472marker - high purity, black, trace element certified as "pre-water wash".
(4) Make a record of the engine oil quantity (Ref. AMM TASK 79-00-00-610-801).
(5) Disconnection of the sense lines:

CAUTION: DISCONNECT THE SENSE LINES AND INSTALL CAPS TO MAKE SURE THAT NO WATER GOES INTO THE SYSTEM. IF WATER GOES INTO THE SYSTEM, IT WILL CAUSE DAMAGE TO IT.

(a) Disconnect the sense lines as necessary to prevent water contamination:
1 Disconnect the PS14 sense tube (AS01) at the Electronic Engine Control (EEC) and put the CAP - PROTECTION on the EEC and the tube (Ref. AMM TASK 73-21-01-000-801) and (Ref. AMM TASK 73-21-01-400-801).
2 Disconnect the burner-pressure sense tube (AS11) at the burner pressure sensor and put the CAP - PROTECTION on the sensor and tube (Ref. AMM TASK 73-21-23-000-802) and (Ref. AMM TASK 73-21-23-400-802).
3 Disconnect the buffer sense tube (AS41) at the buffer air-valve pressure-sensor and put the CAP - PROTECTION on the sensor and tube (Ref. AMM TASK 75-26-22-000-801) and (Ref. AMM TASK 75-26-22-400-801).
4 Disconnect the High Pressure Compressor (HPC) sense tubes (AS33) and (AS34) at the HPC passive-bleed-air-valve pressure-sensor and HPC active-bleed-valve pressure-sensor and put the CAP - PROTECTION on the sensors and tubes (Ref. AMM TASK 75-32-21-000-801) and (Ref. AMM TASK 75-32-22-000-801).
(6) Close the left and right-side thrust-reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802).
(7) Close the left and right-side fan cowl-doors (Ref. AMM TASK 71-13-00-410-802).

Subtask 72-00-00-080-074-A ** ON A/C NOT FOR ALL

B. Installation of the Water Wash Cart
(1) Connect the PWA104744 CART-WATER WASH to the PWA83298 DISTRIBUTOR-WATER WASH and the PWA111606 NOZZLE SET, WATER FLOW as follows:
(a) Connect the PWA104744 CART-WATER WASH hose to the PWA83298 DISTRIBUTOR-WATER WASH ball valve.

Cleaning of the Engine Gaspath - Water Wash Cart ** ON A/C NOT FOR ALL

Cleaning of the Engine Gaspath - Wash Nozzle Location ** ON A/C NOT FOR ALL

(b) Install the two PWA83298 DISTRIBUTOR-WATER WASH sockets to the two PWA111606 NOZZLE SET, WATER FLOW plugs.

Cleaning of the Engine Gaspath - Wash Nozzle Location ** ON A/C NOT FOR ALL

(c) Adjust the PWA83298 DISTRIBUTOR-WATER WASH for approximately 10 USgal (37.85 l) per minute total flow (5 USgal (18.93 l) per minute from each nozzle).

NOTE: You can calculate the flow rate using a container of known volume and the STOPWATCH.

(d) Make a mark on the PWA83298 DISTRIBUTOR-WATER WASH and valve handle for the correct volume position with the MARKER - FELT TIP.
(e) Turn off the WATER SOURCE - GROUND.
(f) Loosen the three hand knobs on both the PWA111606 NOZZLE SET, WATER FLOW.

Cleaning of the Engine Gaspath - Wash Nozzle Location ** ON A/C NOT FOR ALL

(g) Extend each nozzle tube fully to make sure that you have a maximum wash nozzle length before the two PWA111606 NOZZLE SET, WATER FLOW are installed.
(h) Install each of the nozzle tubes from the rear of the thrust reverser and over the fan exit fairing forward edge at the 3 and 9 o'clock positions.

Cleaning of the Engine Gaspath - Wash Nozzle Location ** ON A/C NOT FOR ALL

(i) Put the two PWA111606 NOZZLE SET, WATER FLOW over the Low Pressure Compressor (LPC) fan exit fairing and into the LPC gaspath.
(j) Make sure the two PWA111606 NOZZLE SET, WATER FLOW do not touch the fan exit stator.
(k) Move the forward hand knob on each PWA111606 NOZZLE SET, WATER FLOW approximately 15 in. (0.38 m) forward of the aft of the thrust reverser and tighten the forward knob.

Cleaning of the Engine Gaspath - Wash Nozzle Location ** ON A/C NOT FOR ALL

(l) Pull each PWA111606 NOZZLE SET, WATER FLOW by the handle until the nozzle hook engages the aft edge of the thrust-reverser translating cowl.
(m) Lock each nozzle hook in position with the two aft hand knobs.
(n) Adjust the spring tension to make sure that each PWA111606 NOZZLE SET, WATER FLOW does not move with the forward knob.
(o) Release the handle and tighten the two aft knobs on each PWA111606 NOZZLE SET, WATER FLOW.
(p) Connect the PWA83298 DISTRIBUTOR-WATER WASH hoses to the two PWA111606 NOZZLE SET, WATER FLOW.
(q) Connect the hoses, adapters and two PWA111606 NOZZLE SET, WATER FLOW to the PWA104744 CART-WATER WASH or local (WATER SOURCE - GROUND).

Subtask 72-00-00-210-169-A ** ON A/C NOT FOR ALL

C. Visual Inspection of the Installation of the Water Wash Equipment
(1) Make sure that there is clearance between the two PWA111606 NOZZLE SET, WATER FLOW and the fan blades.

Cleaning of the Engine Gaspath - Wash Nozzle Location ** ON A/C NOT FOR ALL

WARNING: USE PROTECTIVE GLOVES TO PREVENT POSSIBLE INJURY TO THE HANDS WHEN YOU TOUCH OR HOLD THE FAN BLADES. THE BLADE EDGES ARE SHARP AND CAN CUT THE HANDS.

(2) Put the GLOVES - PROTECTIVE on your hands.
(3) Make sure that you can turn the fan blades freely by hand and the blades do not touch the two PWA111606 NOZZLE SET, WATER FLOW.

NOTE: Turn the fan clockwise as seen from the rear (normal operation). If the fan is accidentally turned counterclockwise, there can be some resistance. This condition is permitted, but do not continue to turn the fan in the counterclockwise (incorrect) direction.

(4) Make sure that the hoses and PWA83298 DISTRIBUTOR-WATER WASH are not in the fan airstream and are correctly attached.

Subtask 72-00-00-110-090-A ** ON A/C NOT FOR ALL

D. Preparation for the Optional Water Wash with Cleaning Solution
(1) If the outside ambient air temperature is less than 40 deg.F (4.44 deg.C), mix P11-014alcohol, isopropyl to the water as shown in the table given below.

Table 701 - Minimum Required Alcohol/Water Mixtures

OUTSIDE AIR TEMPERATURE	PERCENT ALCOHOL BY VOLUME
40 deg.F (4.44 deg.C)	3%
38 deg.F (3.33 deg.C)	6%
36 deg.F (2.22 deg.C)	9%
33 deg.F (0.56 deg.C)	14%
31 deg.F (-0.56 deg.C)	17%
28 deg.F (-2.22 deg.C)	20%
26 deg.F (-3.33 deg.C)	22%
25 deg.F (-3.89 deg.C)	23%
20 deg.F (-6.67 deg.C)	27%
15 deg.F (-9.44 deg.C)	32%
10 deg.F (-12.22 deg.C)	36%
5 deg.F (-15.00 deg.C)	39%
0 deg.F (-17.78 deg.C)	43%

Subtask 72-00-00-110-091-A ** ON A/C NOT FOR ALL

E. Water Wash

CAUTION: DO NOT USE THIS WATER WASH PROCEDURE IF THE AMBIENT AIR TEMPERATURE IS LESS THAN 40°F (4.4°C) WITHOUT ALCOHOL IN THE WATER. IF YOU DO NOT ADD ALCOHOL, ICE CAN FORM AND CAUSE ENGINE DAMAGE.

(1) For water wash with a cleaning solution, prepare 30 USgal (113.56 l) of P11-021cleaner, gaspath (detergent-type) (Ref. AMM TASK 70-27-00-910-803).
(2) Dry-motoring of the engine:

CAUTION: DO NOT START THE WATER FLOW INTO THE GASPATH IF THE EGT IS ABOVE 150 DEG. F (66 DEG.C). IF YOU START THE WATER FLOW WITH THE EGT ABOVE 150 DEG.F (66 DEG.C), THE WATER WILL EVAPORATE FROM THE HOT SURFACES AND WILL NOT CORRECTLY CLEAN THE SURFACES.

CAUTION: DO NOT OPERATE THE STARTER FOR MORE THAN ITS DUTY CYCLE. IF YOU DO, YOU CAN CAUSE DAMAGE TO THE STARTER.

(a) Dry-motor the engine (Ref. AMM TASK 71-00-00-860-817).
(3) Check that the N2 RPM is above 20 percent during the water flow.

NOTE: The engine RPM will decrease as water is flowed into gaspath.

(4) Turn the handle of the PWA83298 DISTRIBUTOR-WATER WASH to start water flow. Flow of water should be approximately 10 USgal (37.85 l) per minute. The PWA83298 DISTRIBUTOR-WATER WASH should be opened to the marks that were made during the calculation of flow.

CAUTION: STOP THE WATER FLOW BEFORE YOU STOP THE DRY-MOTORING. IF YOU DO NOT OBEY THIS INSTRUCTION, THE RISK OF WATER CONTAMINATION IN THE OIL SYSTEM WILL INCREASE AND DAMAGE TO THE ENGINE CAN OCCUR.

(5) Stop the flow of water after approximately 45 seconds.
(6) Stop the dry-motoring of the engine (Ref. AMM TASK 71-00-00-860-817).
(7) Wait approximately five minutes.
(8) Do Steps 4.E.(1) thru 4.E.(8) again for a total of three times.

NOTE: If water flow from the tail pipe is dirty, additional benefit may be gained by additional wash. The operator may elect to repeat the wash procedure at their discretion.

(9) Do Steps 4.E.(1) thru 4.E.(8) again two more times with water only, if cleaning solution used.

NOTE: This is necessary to remove all the cleaning solution from the gaspath.

(10) Disconnect the PWA104744 CART-WATER WASH hose from the PWA83298 DISTRIBUTOR-WATER WASH ball valve and remove the two PWA83298 DISTRIBUTOR-WATER WASH sockets from the two PWA111606 NOZZLE SET, WATER FLOW plugs.

Cleaning of the Engine Gaspath - Wash Nozzle Location ** ON A/C NOT FOR ALL

(11) Loosen the three hand knobs and adjust the two nozzle extension springs on each nozzle.

Cleaning of the Engine Gaspath - Wash Nozzle Location ** ON A/C NOT FOR ALL

(12) Remove the two nozzles from engine and thrust reverser or test cell equipment.

Cleaning of the Engine Gaspath - Wash Nozzle Location ** ON A/C NOT FOR ALL

(13) Open the left and right-side fan cowl-doors (Ref. AMM TASK 71-13-00-010-802).

CAUTION: MAKE SURE YOU REMOVE THE WATER WASH EQUIPMENT BEFORE YOU OPEN THE THRUST REVERSER. IF YOU TRY TO OPEN THE THRUST REVERSER WITH THE EQUIPMENT INSTALLED, YOU WILL CAUSE DAMAGE TO THE ENGINE AND/OR THRUST REVERSER.

(14) Open the left and right-side thrust-reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802).

Subtask 72-00-00-110-092-A ** ON A/C NOT FOR ALL

F. Complementary Cleaning
(1) Clean the fan blades with one of the methods that follow:
(a) Hand-wash both sides of the fan blades with a P05-005cloth, cotton, lint free and P11-021cleaner, gaspath (detergent-type) for SPS 87 make-up (Ref. AMM TASK 70-27-00-910-803):
1 Wipe both sides of the fan blades until clean.
2 Rinse the blades thoroughly with clean water.

WARNING: USE PROTECTIVE GLOVES TO PREVENT POSSIBLE INJURY TO THE HANDS WHEN YOU TOUCH OR HOLD THE FAN BLADES. THE BLADE EDGES ARE SHARP AND CAN CUT THE HANDS.

(b) Hand-wash the blades with P11-049cleaner, aqueous and a P05-005cloth, cotton, lint free:

NOTE: You can use a P05-058brush, plater's tampico to scrub the fan blades.

1 Wipe the aqueous cleaner off with a clean P05-005cloth, cotton, lint free.
(2) Clean the structural guide vanes as follows:
(a) Hand-wash the vanes with P11-049cleaner, aqueous and a P05-005cloth, cotton, lint free:

NOTE: You can use a P05-058brush, plater's tampico to scrub the vanes.

1 Wipe the aqueous cleaner off with a clean P05-005cloth, cotton, lint free.

Subtask 72-00-00-100-053-A ** ON A/C NOT FOR ALL

G. Remove water from the five sense lines as follows:
(1) Remove the CAP - PROTECTION installed in Para. 4.A.(5).
(2) Install the necessary adapters to attach CART - GROUND, NITROGEN to each sense tube.

NOTE: Shop air is acceptable to use but nitrogen is preferred.

CAUTION: DO NOT PUT PRESSURE INTO THE EEC. IF YOU DO, YOU CAN CAUSE DAMAGE TO THE EEC.

(3) Apply 20 psi (1.38 bar) nitrogen to the five sense lines for two minutes.
(4) Remove the adapters from the sense lines.

Subtask 72-00-00-420-080-A ** ON A/C NOT FOR ALL

H. Installation of the Engine Parts Removed
(1) Connect the sense lines as follows:
(a) Connect the PS14 sense tube (AS01) to the EEC (Ref. AMM TASK 73-21-01-400-801).
(b) Connect the burner-pressure sense tube (AS11) to the burner pressure sensor (Ref. AMM TASK 73-21-23-400-801).
(c) Connect the buffer sense tube (AS41) to the buffer air valve pressure sensor (Ref. AMM TASK 75-26-22-400-801).
(d) Connect the HPC sense tubes (AS33) and (AS34) at the HPC passive bleed air valve pressure sensor and HPC active bleed valve pressure sensor (Ref. AMM TASK 75-32-21-400-801) and (Ref. AMM TASK 75-32-22-400-801).

Subtask 72-00-00-860-106-A ** ON A/C NOT FOR ALL

I. Procedure after the Water Wash
(1) Get a post-water-wash engine-oil quantity-measurement as follows:
(a) Close the left and right-side thrust-reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802).
(b) Close the left and right-side fan cowl-doors (Ref. AMM TASK 71-13-00-410-802).
(c) Dry-motor the engine with the starter (Ref. AMM TASK 71-00-00-860-817).
1 Use approximately the same percentage of N2 speed as the pre-water wash sample.
(d) Open the oil tank access-door at approximately 9 o'clock position.
(e) Check the oil quantity measurement after approximately 30 seconds.

NOTE: Oil quantity may vary slightly from the pre-water wash oil-quantity.

1 If there is a large difference in oil quantity, check the oil quantity (Ref. AMM TASK 79-00-00-610-801).
(f) Close the oil tank access-door.
(2) Start the engine (normal automatic start) (Ref. AMM TASK 71-00-00-860-823).
(a) Run the engine at minimum idle for ten minutes.

NOTE: This is to evaporate any water or cleaner from the oil system during the gaspath cleaning procedure.

1 If the engine/aircraft will be out-of-service for more than 24 hours, run the engine until the main oil temperature is 220 deg.F (104.44 deg.C) for at least two minutes.
(3) Shut down the engine (normal engine stop procedure) (Ref. AMM TASK 71-00-00-860-814).
(4) Open the oil tank access-door.
(5) Check the post-wash oil sample for water contamination as follows:
(a) If the engine is sent back to service in less than 12 hours, step 4.J.(5) is not necessary.
(b) If a power assurance test is done in less than 12 hours, step 4.J.(5) is not necessary (Ref. AMM TASK 71-00-00-710-806).
(c) If the engine is not going back to service in less than 12 hours, do the steps that follow:
1 Collect a 4.0 oz (113.40 g) sample of engine oil in the BOTTLE - SAMPLE (Ref. AMM TASK 79-00-00-281-804).
2 Mark the BOTTLE - SAMPLE as "Post-Water Wash" with the P05-472marker - high purity, black, trace element certified.
3 Hold the oil samples collected pre-water wash and post-water wash, side by side, and up to a light source.
a Examine the color of the oil samples, look for a lighter color (a possible milky appearance).

NOTE: If separation of water and oil can be seen, water contamination of the oil system is possible.

If you are not sure if you can see a color change between the two samples, let the post-water wash sample become stable for 30 minutes.

b Look for beads of water in the oil samples.
(d) Close the oil tank access-door.
(6) Make a record of the engine oil quantity (Ref. AMM TASK 79-00-00-610-801):
(a) If the post-water-wash oil quantity does not increase by two quarts (two liters) or more and the visual comparison of the oil does not show significant change in the color shading, the oil will be considered to be free of water contamination.
(b) If the oil quantity increases by two quarts (two liters) or more, or if the visual comparison of oil shows a change in color shading or beads of water, then the oil system will be considered contaminated by water.
1 If oil is considered contaminated by water because of the oil quantity increase but the oil color comparison is acceptable, a second oil sample may be made after an additional ten minutes idle run.
2 Repeat the contamination check after the second run.
(7) For engines that show water contamination, service the oil system as follows:
(a) Drain the engine oil system (Ref. AMM TASK 79-00-00-680-801).
(b) Fill the engine oil system (Ref. AMM TASK 79-00-00-610-801).

NOTE: Pratt & Whitney recommends to operate the engine as soon as possible post-water wash. However, it is acceptable for the engine to sit up to 24 hours maximum post-water wash, before it operates again.

(8) Do the engine motor leak test (dry method) (Ref. AMM TASK 71-00-00-720-809).

Subtask 72-00-00-110-093-A ** ON A/C NOT FOR ALL

J. EcoPower Method (Alternate to Water Wash)
(1) Do an engine gaspath cleaning for performance improvement, EcoPower method (alternate to water wash) as follows:

CAUTION: EXCEPT FOR WORK OR SUPPLIES TO BE PERFORMED OR FURNISHED BY IAE LLC, IAE LLC DOES NOT ENDORSE THE WORK PERFORMED BY THE COMPANY OR COMPANIES IDENTIFIED HEREIN OR ANY OTHER COMPANY AND DOES NOT ACCEPT RESPONSIBILITY TO ANY DEGREE FOR THE SELECTION OF SUCH COMPANY OR COMPANIES FOR THE PERFORMANCE OF ANY WORK OR PROCUREMENT OF SUPPLIES.

(a) This is a proprietary procedure. The source licensed for this procedure is EcoPower. To locate a franchised source in your local area, contact the Pratt & Whitney 24 Hour Customer HelpDesk at (860) 565-0140 or go to www.ecopowerenginewash.com. Ask about the EcoPower engine wash system.

5. Close-up
Subtask 72-00-00-860-113-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) On the AIR COND panel 30VU, set the ENG 1(2) BLEED pushbutton switch to ON (the OFF legend of the ENG1(2) BLEED is OFF).

Subtask 72-00-00-862-056-A ** ON A/C NOT FOR ALL

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 72-00-00-410-238-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Make sure that the left and right-side thrust-reverser cowl-doors are closed (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR.
(2) Make sure that the left and right-side fan cowl-doors are closed (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 13:02:02 UTC