Motor the Engine (Dry Method) [PW11]

TASK 71-00-00-860-817-A
Motor the Engine (Dry Method)

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

WARNING: MAKE SURE THAT ALL ENGINE-IN-OPERATION AREAS (RAMPS, TAXIWAYS, RUNWAYS, ETC.) ARE SUFFICIENTLY CLEAN TO PREVENT INJURY TO THE PERSONS IN THE AREA AND DAMAGE TO THE ENGINE OR AIRCRAFT.

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 GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

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 GROUND POWER SUPPLY IS CONNECTED, THERE IS A RISK OF DAMAGE TO THE ENGINE PUMPS.

CAUTION: BEFORE YOU OPERATE THE ENGINE, LOOK AT THE INLET AND THE AREA AROUND IT (MAKE SURE THE AREA IS CLEAN). DIRT AND LOOSE OBJECTS CAN CAUSE DAMAGE IF THEY GET INTO THE ENGINE.

ZONE: 210
ZONE: 400

1. Reason for the Job
This dry-motor procedure uses the engine starter only to operate the engine for a short time to remove unburned fuel from the engine or cool the engine down to acceptable levels if the engine was too hot at shutdown.
The dry-motor leak test uses the engine starter only to operate the engine for a short time. The ignition system is OFF for this test. The fuel goes to the fuel pump (for pump lubrication) but not to the engine fuel manifolds and nozzles. The actuators fuel pressure lines are not pressurized. This procedure is recommended for most motor checks unless the wet-motor check is specified.

NOTE: During a motoring sequence on the ground, the EEC automatically determines if Motoring to Start is required for BOWED ROTOR PROTECTION. The EEC keeps the N2 speed at a low value (approximately 10% N2) for a calculated duration based on time since shutdown, OAT and engine turbine temperature. During Motoring to Start, a "COOLING" indication is displayed on the upper ECAM display unit. When the Motoring to Start period is complete, the EEC will continue to normal engine start. If N2 exceeds the maximum speed for BOWED ROTOR PROTECTION during motoring to start, the EEC will abort the motoring and the warning ENG X START FAULT (BOWED ROTOR PROTECTION) will be displayed.

2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
400	POWER PLANT, NACELLES AND PYLONS

B. Referenced Information

REFERENCE	DESIGNATION
TASK 10-11-00-555-014-A	Removal of the Aircraft Protection Equipment
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 29-10-00-863-002-A	Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-30-00-200-002-A	Check of the Reservoir Quantity Indication on the ECAM Display Unit
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 36-12-00-860-802-A	Pressurization of the Bleed System with the APU
TASK 36-12-00-860-803-A	Pressurization of the Bleed System through the HP Ground Connector
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 79-00-00-610-801-A	Check and Fill the Engine Oil
Cockpit Controls and Panels

3. Job Set-up
Subtask 71-00-00-941-129-A ** ON A/C NOT FOR ALL

A. Safety Precautions

CAUTION: REMOVE THE PROTECTIVE COVERS FROM THE PROBES BEFORE YOU DO THIS PROCEDURE. IF YOU DO NOT REMOVE THEM, THE PROBES AND PROTECTIVE COVERS CAN BECOME DAMAGED OR BURNED.

(1) Make sure that all the protection covers are removed from the aircraft (Ref. AMM TASK 10-11-00-555-014).
(2) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(3) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
(4) On overhead control and indicator panel 22VU, on the ENG section:
(a) Make sure that the ON legend of the MAN START pushbutton switch is off.
(5) On rudder-trim parking-brake panel 110VU, on the PARKING BRK section:
(a) Make sure that the PARK BRK control-switch is set to ON.
(6) On right-center instrument panel 400VU, make sure that:
(a) The brake pressure indication on the Yellow brake-pressure triple-indicator is correct. If necessary, pressurize the brake accumulator with the Yellow pump (Ref. AMM TASK 29-10-00-863-002).
(7) Make sure that all the parts, tools, equipment and loose objects are removed from the engine air intake and the area around the intake.

Subtask 71-00-00-860-198-A ** ON A/C NOT FOR ALL

B. Preparation before Procedure
(1) Do the EIS start procedure (ECAM display units only) (Ref. AMM TASK 31-60-00-860-001).

Subtask 71-00-00-865-172-A ** ON A/C NOT FOR ALL

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

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, ENG 1)
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
49VU	ENGINE/1/HP FUEL SOV	1KC1	A01
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
** ON A/C NOT FOR ALL
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
121VU	OIL/PRESS/ENG1	10KC1	N40
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
** ON A/C NOT FOR ALL
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENG 2)
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
49VU	ENGINE/2/HP FUEL SOV	1KC2	A02
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	Q40
** ON A/C NOT FOR ALL
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26
121VU	OIL/PRESS/ENG2	10KC2	N42
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41

Subtask 71-00-00-860-199-A ** ON A/C NOT FOR ALL

D. Continue to Prepare for the Test
(1) On the FUEL section of overhead panel 40VU:
(a) Push all the PUMPS pushbutton switches.
(b) Make sure that the OFF legend of these pushbutton switches go off.
(2) On circuit breaker panel 49VU:
(a) Open circuit breaker 1KC1(2) to open the LP valve.
(b) After a few seconds:

The single chime sounds.
The MASTER CAUT light comes on.
The ENG1(2) LP VALVE OPEN warning message comes into view on the upper ECAM DU.

(3) Supply the aircraft pneumatic system from a High Pressure (HP) ground power unit or the APU (Ref. AMM TASK 36-12-00-860-803) or (Ref. AMM TASK 36-12-00-860-802).
(4) Make sure that the thrust lever of the engine 1(2) is set to IDLE.
(5) On the lower ECAM display unit, get the ENG page:
(a) If necessary, service the engine oil system (Ref. AMM TASK 79-00-00-610-801).
(6) Check of the hydraulic reservoir
(a) On the lower ECAM display unit, get the HYDRAULIC page:
1 Make sure that the pressure of the Green reservoir for engine 1 (Yellow reservoir for engine 2) is correct.
2 Make sure that the reservoir fluid level is correct (Ref. AMM TASK 29-30-00-200-002).
(b) Make sure that the engine 1(2) pump is serviceable (on the HYD section of overhead panel 40VU, the OFF legend of the ENG 1(2) PUMP pushbutton switch must be off).
(7) Make sure that the aircraft is cleared and that there are no persons in the dangerous areas.

4. Procedure

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

Subtask 71-00-00-860-184-A ** ON A/C NOT FOR ALL

A. Dry-Motor the Engine
(1) Do the engine dry-motoring as follows:
(a) Set the ENG/MODE rotary selector switch to the CRANK position.
(b) Set the ENG/MAN START 1(2) pushbutton switch to the ON position.
(c) Operate the starter

CAUTION: DO NOT OPERATE THE STARTER FOR MORE THAN FIFTEEN MINUTES. IF YOU DO, YOU CAN CAUSE DAMAGE TO THE STARTER.

1 Operate the starter for as long as necessary but not for more than the starter duty cycle.
a The starter duty cycle is as follows:

Three start attempts
35 seconds cooling period between each start attempt
15 minutes cumulative cranking
Followed by 15 minutes minimum period when N2 speed is zero (0) RPM.

NOTE: The EEC will automatically command the starter air valve closed after 15 minutes to ensure the starter duty cycle is not exceed.

b The extended starter duty cycle is as follows:

15 minutes maximum continuous cranking
Followed by 15 minutes minimum period when N2 speed is zero (0) RPM.

NOTE: The EEC will automatically command the starter air valve closed after 15 minutes to ensure the starter duty cycle is not exceed.

(d) On the lower ECAM display unit, do a check of the main oil pressure. The pressure must be positive.
(e) On the upper ECAM display unit, do a check of the N1 and N2 speeds. Both of the rotors must turn.
(f) On the overhead CTL&IND panel 22VU, set the ENG/MAN START 1(2) pushbutton switch to the OFF position.
(g) Make sure that N2 is decreasing.
(h) Set the ENG/MODE rotary selector switch to the NORM position.
(i) If you find any leaks, repair all leaks and leak test the engine again.

5. Close-up
Subtask 71-00-00-860-200-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) On the FUEL section of overhead panel 40VU:
(a) Release all the PUMPS pushbutton switches.
(b) Make sure that the OFF legend of these pushbutton switches comes on.
(2) Stop the pneumatic air supply to the aircraft.
(a) Disconnect the HP ground power unit or stop the APU (Ref. AMM TASK 36-12-00-860-803) or (Ref. AMM TASK 36-12-00-860-802).
(3) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(4) Close the circuit breaker 1KC1(2) to close the LP valve.
On the upper ECAM display unit:

The ENG 1(2) LP VALVE OPEN message goes out of view.

(5) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(6) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 02:31:14 UTC