Wet Motor Test (Menu Mode) - PRE CFM SB 73-0008 [CFML]

TASK 73-29-00-740-807-A
Wet Motor Test (Menu Mode) - PRE CFM SB 73-0008

WARNING: WHEN YOU GO NEAR A JET ENGINE, BE CAREFUL TO STAY AWAY FROM THE INLET AREA. AN ENGINE HAS SUFFICIENT SUCTION AT THE INLET TO PULL A PERSON UP TO THE INLET OR INTO IT. THIS CAN CAUSE INJURY OR DEATH. THE INLET CAN ALSO PULL HATS, GLASSES, LOOSE CLOTHING, OR RAGS FROM POCKETS. REMOVE OR MAKE SAFE ALL LOOSE ITEMS BEFORE YOU DO WORK AROUND AN ENGINE.

WARNING: MAKE SURE THAT ALL ENGINE OPERATING AREAS ARE AS CLEAN AS POSSIBLE. ALL RAMPS, TAXIWAYS, RUNWAYS AND OTHER OPERATING AREAS MUST BE VERY CLEAN TO PREVENT BAD DAMAGE TO THE ENGINE, AIRCRAFT AND PERSONS IN THE AREA.

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE CLEAR BEFORE YOU MOTOR THE ENGINE. MOVEMENT OF THE FLIGHT CONTROL SURFACES CAN BE DANGEROUS AND/OR CAUSE DAMAGE.

WARNING: DO NOT TOUCH THE PROBES DURING OR IMMEDIATELY AFTER THIS PROCEDURE. THE PROBES WILL BE HOT AND CAN BURN YOU.

WARNING: MAKE SURE THAT THE LANDING GEAR GROUND SAFETIES AND THE WHEEL CHOCKS ARE IN POSITION. MOVEMENT OF THE AIRCRAFT CAN BE DANGEROUS.

CAUTION: MAKE SURE THAT THERE IS NO HYDRAULIC GROUND POWER SUPPLY CONNECTED TO THE AIRCRAFT WHEN YOU DO THIS PROCEDURE. IF A HYDRAULIC GROUND POWER SUPPLY IS CONNECTED, THERE IS A RISK OF DAMAGE TO THE ENGINE PUMPS.

CAUTION: REMOVE THE PROTECTIVE COVERS FROM THE PROBES BEFORE YOU DO THIS PROCEDURE.

1. Reason for the Job
This is a wet-motoring test. This test reports fuel system faults and is used to do leak checks for valves downstream of the HPSOV. When the test is completed, the test results screen is displayed on the MCDU which will show any faults found during the test.
This test is also used to depreserve the engine when the fuel system of the engine was previously preserved.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-13-79-610-805-A	Check of the Oil Level and Replenishing
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 26-12-00-710-002-A	Operational Test of the Engine Fire and Overheat Detection with the Centralized Fault Display System (CFDS)
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 36-12-00-860-805-A	Pressurization of the Bleed System with the APU
TASK 36-12-00-860-806-A	Pressurization of the Bleed System through the HP Ground Connector
TASK 71-00-00-790-805-A	Fuel or Hydraulic or Oil Leakage Limits
TASK 71-00-00-869-802-A	Wind Limitations During Engine Ground Operations
TASK 71-00-00-869-803-A	Safety Precautions During Engine Ground Operations
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 78-30-00-040-809-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-809-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-806-A	Opening of the Thrust Reverser Cowl Doors
TASK 78-36-00-410-806-A	Closing of the Thrust Reverser Cowl Doors
Wet Motor Test (Menu Mode)

3. Job Set-up
Subtask 73-29-00-869-059-A ** ON A/C NOT FOR ALL

A. Prepare for the Test
(1) Obey the wind limitations and safety precautions during the engine ground operations (Ref. AMM TASK 71-00-00-869-802) and (Ref. AMM TASK 71-00-00-869-803).
(2) Make sure that the engine inlet and exhaust covers are removed. Make sure that these areas are clear of unwanted objects.
(3) Make a visual check of the temperature sensors, fan inlet and exhaust areas. If snow or ice has collected in the fan duct, make sure that the fan turns freely. Also, make sure that the engine inlet, inlet lip, fan, spinner and fan exhaust duct are clear of ice or snow. If the fan does not turn freely, you must melt the snow or ice with hot air before the engine operation.
(4) Look at the general condition of the fan spinner and fan blades, core exhaust nozzle, LPT and external surfaces of the cowls.
(5) Do a check of the oil quantity (Ref. AMM TASK 12-13-79-610-805).
(6) Do a check of the drain ports for fuel, oil and hydraulic leaks (Ref. AMM TASK 71-00-00-790-805).
(7) Make sure that the fuel drained from the engine does not cause a fire.
(8) On the HYD/FUEL panel 40VU:

Push all the FUEL/PUMPS pushbutton switches.
The OFF legends of these pushbutton switches go off.

(9) Make sure that the throttle control lever of the engine 1(2) is in the idle stop position (zero on the graduated sector).

Subtask 73-29-00-941-079-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put a WARNING NOTICE(S) in position to tell persons not to operate:

The ENG/MODE selector switch
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.

Subtask 73-29-00-010-060-A ** ON A/C NOT FOR ALL

C. Get Access
(1) If necessary, open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 73-29-00-040-055-A ** ON A/C NOT FOR ALL

D. Deactivation of the Thrust Reverser System for Ground 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 ground maintenance (Ref. AMM TASK 78-30-00-040-809).

Subtask 73-29-00-010-061-A ** ON A/C NOT FOR ALL

E. If necessary, open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-806)
(1) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(2) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR

Subtask 73-29-00-861-064-A ** ON A/C NOT FOR ALL

F. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).

Subtask 73-29-00-865-073-A ** ON A/C NOT FOR ALL

G. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
** ON A/C NOT FOR ALL
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU 2	4KS2	R41
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU 2	4KS2	Q40

Subtask 73-29-00-865-075-A ** ON A/C NOT FOR ALL

H. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42

Subtask 73-29-00-869-061-A ** ON A/C NOT FOR ALL

I. Continue to Prepare for Test

CAUTION: MAKE SURE THAT THE HYDRAULIC RESERVOIR PRESSURE IS IN THE CORRECT OPERATION RANGE BEFORE YOU START THE ENGINE. THE HYDRAULIC FLUID IS NECESSARY TO LUBRICATE THE HYDRAULIC PUMPS THAT THE ENGINE OPERATES.

(1) Supply the aircraft pneumatic system from the HP ground power unit or the APU (Ref. AMM TASK 36-12-00-860-806) and (Ref. AMM TASK 36-12-00-860-805).
(2) On the lower ECAM DU:
(a) Get the HYDRAULIC page.
(b) Make sure that the pressure of the Green reservoir for engine 1 (Yellow reservoir for engine 2) is correct.
(c) Make sure that the reservoir fluid level is correct.
(3) Make sure that the engine 1(2) pump is serviceable (on HYD/FUEL panel 40VU, the OFF legend of the ENG 1(2) PUMP pushbutton switch is off).

Subtask 73-29-00-710-065-A ** ON A/C NOT FOR ALL

J. Test
(1) Do the operational test of the engine fire and overheat detection (loop/squib) (Ref. AMM TASK 26-12-00-710-002).

4. Procedure

CAUTION: DO NOT OPERATE THE ENGINE IF THE FUEL INLET PRESSURE IS NOT POSITIVE. THE FUEL IS NECESSARY TO LUBRICATE THE ENGINE FUEL PUMP AND THE HMU AND THUS PREVENT DAMAGE.

CAUTION: MAKE SURE THAT THE ENG/MASTER 1(2) CONTROL SWITCH (ON THE PANEL 115VU) IS SET TO OFF BEFORE YOU START THE FUEL PUMPS.

CAUTION: DO NOT EXCEED THE STARTER DUTY CYCLE. DAMAGE TO THE STARTER CAN OCCUR.

Subtask 73-29-00-710-066-A ** ON A/C NOT FOR ALL

WARNING: BEFORE YOU START THE ENGINE AFTER A WET MOTORING TEST, DRY MOTOR THE ENGINE FOR TWO MINUTES. A LARGE QUANTITY OF HIGHLY FLAMMABLE FUEL VAPORS COME OUT FROM THE ENGINE DURING THE WET MOTORING AND THERE IS A RISK OF FIRE.

WARNING: MAKE SURE THAT THE AIRCRAFT IS POINTED INTO THE WIND WHEN YOU DO A WET MOTORING TEST. A LARGE QUANTITY OF HIGHLY FLAMMABLE FUEL VAPORS COME OUT FROM THE ENGINE DURING THE WET MOTORING AND THERE IS A RISK OF FIRE.

A. Do this Test.

NOTE: During this test, the following fuel leak observation can be expected:

Some fuel discharge at the LPT drain,
Light fuel leak at the interface between the "B" Sump drain line and the engine casing

NOTE: Make sure the Thrust Reverser Cowls doors are opened.

NOTE: During the test, obey the instructions shown on the MCDU.

NOTE: The Menu Mode wet motoring test is expected to take approximately 4 minutes to complete.

NOTE: The EEC will not enter the menu mode (interactive mode) after an enquire command from the CFDS (Centralized Fault Display System) when any of the following conditions are set:

N2 more than ten percent or invalid.
Engine not off.
Engine not in default start state.
TLA (Throttle Lever Angle) not at idle or invalid.
Aircraft in the air.
MASTER lever ON or invalid.
Cross channel has been set to channel switch request flag.
BITE command code input label invalid.

NOTE: : The EEC will abort a running test or special function when any of the following conditions becomes set:

N2 more than 45 percent or invalid.
Engine state not starting or off.
Engine not in default , dry motor, or wet motor start state.
EGT more than 250 deg.C (482.00 deg.F) or invalid
TLA (Throttle Lever Angle) not at idle or invalid.
Aircraft in the air.
115 V power available to igniters
N2 drops below 20 percent after going above 20 percent.
N2 more than 20 percent for two minutes during crank or start phase.
Cross channel has been set to channel switch request flag.

ACTION	RESULT
1.On the MCDU, make the following selections for the applicable engine: A.On the Engine X Main Menu screen, select the key adjacent to ENGINE TESTS.	The Engine Tests submenu screen is displayed.
B.On the Engine Tests submenu, select the key adjacent to WET MOTOR TEST. NOTE: If the return key is selected on the MCDU during a running test or special function, the EEC will abort the test. FUNCTION TERMINATED will be shown on the MCDU. You will need to select the return key and restart the test.	The Wet Motor Test Start Screen is displayed.
2.On the ENG panel 115VU: Set the ENG/MODE/CRANK/NORM/IGN/START selector switch to CRANK.	On the lower ECAM DU: The ENGINE page comes into view. Make sure that the available air pressure is between 25 psi (1.72 bar) and 55 psi (3.79 bar). Make sure that the quantity of oil in the oil tank of the engine 1(2) is correct.
3.On the overhead CTL & IND panel 22VU: Push the ENG/MAN START 1(2) pushbutton switch. NOTE: During cold weather, large oil pressure surges can occur.	The ON legend of this pushbutton switch comes on. On the lower ECAM DU, on the ENGINE page: The symbol for the starter valve is in the open position. NOTE: Make sure that: The engine rotates. The oil pressure indication is positive. NOTE: While the engine is motoring, do a visual check for leaks at the fuel and oil system tubes and manifolds.
4.When the N2 speed is between 15 and 20 percent, on ENG panel 115VU: Set the ENG/MASTER 1(2) control switch to ON.	On the upper ECAM DU: The fuel flow indication FF increases. On the lower ECAM DU: Make sure that the oil pressure indication is positive.
5.On the MCDU Wet Motor Test Start Screen, select key START THE TEST.	The Wet Motor Test progress Screen is displayed. Pause until fuel mist is observed from the engine exhaust.
6.After fuel mist is observed, on the ENG panel 115VU: Set the ENG/MASTER 1(2) control switch to OFF.	On the lower ECAM DU: The symbol for the starter valve is in the closed position after the reset of the EEC. NOTE: After the reset of the EEC, the EEC will command the starter valve to open when the core speed is 10 percent and the engine will begin dry-motoring.
7.Continue dry-motoring the engine for 60 seconds.	This will dry the fuel that can be in the combustor. On the MCDU: Wet Motor Test OK is displayed if there are no faults or Page is displayed with fault codes with the engine number, channel letter, flight leg number (00), date, time, ATA number and description of the fault. NOTE: A maximum of three faults per page will be shown and a maximum of 12 faults will be saved.
8.After 60 seconds of dry-motoring, on the overhead CTL & IND panel 22VU:	The ON legend of this pushbutton switch goes off.
9.On the MCDU: Select RETURN.	Wet Motor Test Complete is displayed.
Release the ENG/MAN START 1(2) pushbutton switch. Listen for unusual noise from the engine during coast down.	The symbol for the starter valve is in the closed position. The engine motoring stops and the engine the coast down begins. NOTE: Gear noise and seal rubs are normal noise.
10.On HYD/FUEL panel 40VU: Release all the FUEL/PUMPS pushbutton switches.	The OFF legends of these pushbutton switches come on.
11.On the ENG panel 115VU: Set the ENG/MODE/CRANK/NORM/IGN/START selector switch to NORM.	On the lower ECAM DU: The ENGINE page goes out of view.
12.On the ECAM control panel: Get the ENGINE page.	On the lower ECAM DU: The ENGINE page comes into view.
13.On the WET MOTOR TEST screen: Select RETURN	The engine Tests main screen is shown.
14.On the Engine Tests main screen: Select RETURN.	The MCDU home page comes into view.

Subtask 73-29-00-210-050-A ** ON A/C NOT FOR ALL

B. Do a General Visual Inspection.
(1) Do a check of the engine oil level and service as necessary.
(2) Do an inspection of the fuel nozzles and manifold for leaks.
(3) Do an inspection of the fuel and oil lines, fittings and components for leaks.
(4) Do an inspection of the fan inlet and turbine exhaust for abnormal conditions.

5. Close-up
Subtask 73-29-00-869-063-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Stop the pneumatic supply to the aircraft (Ref. AMM TASK 36-12-00-860-806) and (Ref. AMM TASK 36-12-00-860-805).
(a) Disconnect the HP ground power unit or stop the APU.
(2) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).

Subtask 73-29-00-865-074-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42

Subtask 73-29-00-410-063-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) If necessary, close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-806).
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR

Subtask 73-29-00-440-054-A ** ON A/C NOT FOR ALL

D. Do the reactivation of the thrust reverser after ground maintenance (Ref. AMM TASK 78-30-00-440-809).

Subtask 73-29-00-410-064-A ** ON A/C NOT FOR ALL

E. Close Access
(1) If necessary, close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).

Subtask 73-29-00-862-086-A ** ON A/C NOT FOR ALL

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

[Rev.8 from Aug 2017] 2026.04.01 03:06:30 UTC