Installation of the Hydromechanical Unit (HMU) [CFMB]

TASK 73-21-10-400-002-A
Installation of the Hydromechanical Unit (HMU)

ZONE: 400
FIN: 4000KC1 ** ON A/C NOT FOR ALL
FIN: 4000KC2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	BOLT - 250-28UNF-2A X 0.50IN.
No specific	AR	PLIERS - NOSE, SOFT, LONG
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 42 and 38 lbf.in (0.47 and 0.43 m.daN )
No specific	Torque wrench: range to between 50 and 45 lbf.in (0.57 and 0.51 m.daN )
No specific	Torque wrench: range to between 53 and 47 lbf.in (0.60 and 0.53 m.daN )
No specific	Torque wrench: range to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
No specific	Torque wrench: range to between 80 and 70 lbf.in (0.90 and 0.79 m.daN )
No specific	Torque wrench: range to between 140 and 120 lbf.in (1.58 and 1.36 m.daN )
No specific	Torque wrench: range to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )
No specific	Torque wrench: range to between 160 and 150 lbf.in (1.81 and 1.70 m.daN )
No specific	Torque wrench: range to between 200 and 180 lbf.in (2.26 and 2.03 m.daN )
No specific	Torque wrench: range to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )
No specific	Torque wrench: range to between 550 and 450 lbf.in (6.22 and 5.09 m.daN )
No specific	Torque wrench: range to between 770 and 650 lbf.in (8.70 and 7.35 m.daN )
No specific	Torque wrench: range to between 1100 and 900 lbf.in (12.43 and 10.17 m.daN )
856A1336	1	ADAPTOR SET, TORQUE - MEC FASTENERS
856A1469	1	WRENCH SET, RUN ON OFF - MEC FUEL PUMP NUTS
856A1494	1	FIXTURE,HANDLING-HMU

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2442)	engine oil
(Material No.CP5070)	vaseline
(Material No.CP8001)	lockwire 0.032 in. (0.8 mm) dia.
(Material No.CP8002)	lockwire 0.032 in. (0.8 mm) dia

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
180	GASKET	AIPC 73-21-10-01-040
360	O-RING	AIPC 73-21-10-01-060
390	O-RING	AIPC 73-21-10-01-070
450	O-RING	AIPC 73-21-10-01-100
480	O-RING	AIPC 73-21-10-01-120
500	O-RING	AIPC 73-21-10-01-140
590	O-RING	AIPC 73-21-10-01-170
420	O-RING	AIPC 73-21-10-01-190
160	O-RING	AIPC 73-21-10-01-210
140	O-RING	AIPC 73-21-10-01-230
330	O-RING	AIPC 73-21-10-01-250
230	O-RING	AIPC 73-21-10-01-270
300	O-RING	AIPC 73-21-10-01-290
260	O-RING	AIPC 73-21-10-01-320
110	GASKET	AIPC 73-31-10-01-040

E. 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 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 70-21-00-918-002-A	Seals (Preformed Packings and O-rings) and Gaskets
TASK 71-00-00-710-006-B	Minimum Idle Check
TASK 71-00-00-790-002-B	Fuel or Hydraulic or Oil Leakage Limits
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 72-63-00-000-002-A	Removal of the Handcranking Drive Cover
TASK 72-63-00-400-002-A	Installation of the Handcranking Drive Cover
TASK 73-11-45-400-001-A	Installation of the Fuel Nozzle Filter ((Downstream Fuel Filter)
TASK 73-29-00-710-040-B	Operational Test of the FADEC on the Ground (with Engine Motoring)
TASK 73-29-00-710-040-B-02	Operational Test of the FADEC on the Ground (with Engine Non motoring)
TASK 73-31-10-400-002-A	Installation of the Fuel Flow Transmitter
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
Hydromechanical Unit

3. Job Set-up
Subtask 73-21-10-860-052-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.

Subtask 73-21-10-865-055-A ** ON A/C NOT FOR ALL

WARNING: OPEN CIRCUIT BREAKERS 1QG (2QG) AND 3QG (4QG) BEFORE YOU OPEN CIRCUIT BREAKER 1KC1 (2). IF NOT, THE LP FUEL VALVE WILL OPEN AND THERE IS A RISK THAT FUEL WILL FLOW OUT.

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
49VU	ENGINE/1/HP FUEL SOV	1KC1	A01
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
FOR FIN: 1000EM2 (ENGINE2)
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
49VU	ENGINE/2/HP FUEL SOV	1KC2	A02
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26

Subtask 73-21-10-010-055-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open: (Ref. AMM TASK 78-36-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 73-21-10-040-053-A ** ON A/C NOT FOR ALL

D. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).

4. Procedure
Subtask 73-21-10-420-054-A ** ON A/C NOT FOR ALL

A. Installation of the HMU

NOTE: HMUs that have fluorocarbon (Viton) external seals (SB 73-015) can leak fuel for a short time when they are below 0 deg.C (32.00 deg.F) (Modification 1 and 2) (Ref. AMM TASK 71-00-00-790-002).

(1) Lubricate the new O-rings with vaseline (Material No.CP5070) and install the new O-rings on the nipples and plugs as follows:
(a) VBV open nipple (220) and new AIPC 73-21-10-01-270 O-RING (230).
(b) RACSB nipple (410) and new AIPC 73-21-10-01-190 O-RING (420) at the port marked RACCS.

NOTE: Only applicable for non /P engines.

NOTE: Only applicable for /P and /3 engines.

(d) VBV closed nipple (320) and a new AIPC 73-21-10-01-250 O-RING (330).
(e) PCR closed nipple (290) and a new AIPC 73-21-10-01-290 O-RING (300).
(f) HPTACC nipple (470) and a new AIPC 73-21-10-01-120 O-RING (480).
(g) LPTACC nipple (440) and a new AIPC 73-21-10-01-100 O-RING (450).

PRE CFMI SB 73-0096

(h) SOV nipple (580) and a new AIPC 73-21-10-01-170 O-RING (590).

NOTE: Only applicable for SAC engines.

END OF PRE CFMI SB 73-0096

PRE CFMI SB 73-0114

(i) BSV nipple (250) and a new AIPC 73-21-10-01-320 O-RING (260).

NOTE: Only applicable for DAC engines.

END OF PRE CFMI SB 73-0114

(j) VSV head nipple (380) and a new AIPC 73-21-10-01-070 O-RING (390).
(k) VSV rod nipple (350) and a new AIPC 73-21-10-01-060 O-RING (360).
(l) PB plug (130) and a new AIPC 73-21-10-01-230 O-RING (140).
(m) PS plug (150) and a new AIPC 73-21-10-01-210 O-RING (160).
(n) OVBD drain nipple (490) and a new AIPC 73-21-10-01-140 O-RING (500).
(2) Remove the remaining blanking plugs, caps and covers from the HMU.
(3) Install the nipples and plugs in the ports of the HMU and torque as follows:
(a) VBV open nipple (220). TORQUE to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )

.
(b) RACSB nipple (410) at the port marked RACCS. TORQUE to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

NOTE: Only applicable for non /P engines.

NOTE: Only applicable for /P engines.

(d) VBV closed nipple (320). TORQUE to between 200 and 180 lbf.in (2.26 and 2.03 m.daN )

.
(e) PCR nipple (290). TORQUE to between 200 and 180 lbf.in (2.26 and 2.03 m.daN )

.
(f) HPTACC nipple (470). TORQUE to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

.
(g) LPTACC nipple (440). TORQUE to between 200 and 180 lbf.in (2.26 and 2.03 m.daN )

.

PRE CFMI SB 73-0096

(h) SOV nipple (580). TORQUE to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

NOTE: Only applicable for SAC engines.

END OF PRE CFMI SB 73-0096

PRE CFMI SB 73-0114

(i) BSV nipple (250). TORQUE to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

NOTE: Only applicable for DAC engines.

END OF PRE CFMI SB 73-0114

(j) VSV head nipple (380). TORQUE to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )

.
(k) VSV rod nipple (350). TORQUE to between 200 and 180 lbf.in (2.26 and 2.03 m.daN )

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(l) PB plug (130). TORQUE to between 80 and 70 lbf.in (0.90 and 0.79 m.daN )

. Safety the PB plug with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.

(m) PS plug (150). TORQUE to between 42 and 38 lbf.in (0.47 and 0.43 m.daN )

. Safety the PS plug with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.
(n) OVBD drain nipple (490). TORQUE to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

.
(4) If the 856A1494 FIXTURE,HANDLING-HMU (856A1494G01) is not installed on the HMU, then install the 856A1494 FIXTURE,HANDLING-HMU (856A1494G01) on the HMU. Use four BOLT - 250-28UNF-2A X 0.50IN..
(5) Remove the blanking cover from the HMU mounting pad on the fuel pump.
(6) Lubricate the AIPC 73-21-10-01-040 GASKET (180) with engine oil (Material No.CP2442) and install on the HMU mounting pad studs.

NOTE: Make sure that the gasket (180) is serviceable (Ref. AMM TASK 70-21-00-918-002).

(7) Align the splines:

CAUTION: HOLD THE HMU LEVEL DURING THE REMOVAL/INSTALLATION. MAKE SURE THAT THE WEIGHT OF THE HMU IS NOT AGAINST THE FUEL-PUMP DRIVE SHAFT AND THAT THE HMU DOES NOT HIT THE FUEL-PUMP MATING FLANGE. IF YOU DO NOT OBEY THESE INSTRUCTIONS, DAMAGE TO THE FUEL-PUMP DRIVE SHAFT, MATING FLANGE OR HMU CAN OCCUR.

CAUTION: DO NOT HOLD OR MOVE THE HYDROMECHANICAL UNIT BY THE TORQUE MOTORS. CHANGES TO THE CALIBRATION OF THE HYDROMECHANICAL UNIT CAN OCCUR.

(a) Carefully align the splines on the drive shaft of the fuel pump with the internal splines of the HMU.
(b) If the splines will not engage, do the following steps:
1 Remove the handcranking drive cover from the core rotation pad on the accessory gear box (AGB), opposite the starter (Ref. AMM TASK 72-63-00-000-002).
2 Install a square drive socket with a breaker bar into the handcranking drive pad. To turn the core engine clockwise (CW), the handcranking device must be turned counterclockwise (CCW).
(8) When the splines of the fuel-pump drive shaft and the HMU can correctly engage, then carefully install the HMU. Make sure that the gasket is serviceable (Ref. AMM TASK 70-21-00-918-002).
(9) Install the washer (200) and nuts (190) on the HMU mounting studs:
(a) Use the 856A1469 WRENCH SET, RUN ON OFF - MEC FUEL PUMP NUTS (856A1469G01) to install the nuts that are difficult to reach.
(b) TORQUE the nuts (190) to between 140 and 120 lbf.in (1.58 and 1.36 m.daN )

. Use the 856A1336 ADAPTOR SET, TORQUE - MEC FASTENERS (856A1336G02) to torque the bolts.
(10) Install the flex-hose on the nipples and torque the coupling nuts and unions as follows:

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:

ONE WRENCH TO HOLD THE UNION, AND
ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.

THIS PREVENTS DAMAGE TO THE PARTS.

(a) VBV open hose (240) to nipple (220). TORQUE to between 550 and 450 lbf.in (6.22 and 5.09 m.daN )

.
(b) RACSB hose (400) to nipple (410) at the port marked RACCS. TORQUE to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

NOTE: Only applicable for non /P engines.

NOTE: Only applicable for /P and /3 engines.

(d) VBV closed hose (310) to nipple (320). TORQUE to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )

.
(e) PCR hose (280) to nipple (290). TORQUE to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )

.
(f) HPTACC hose (460) to nipple (470) at the port marked HPTCC. TORQUE to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

.
(g) LPTACC hose (430) to nipple (440) at the port marked LPTCC. TORQUE to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )

.

PRE CFMI SB 73-0096

(h) SOV hose (570) to nipple (580). TORQUE to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

NOTE: Only applicable for SAC engines.

END OF PRE CFMI SB 73-0096

PRE CFMI SB 73-0114

(i) BSV hose (270) to nipple (250). TORQUE to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

NOTE: Only applicable for DAC engines.

END OF PRE CFMI SB 73-0114

(j) VSV head hose (370) to nipple (380). TORQUE to between 550 and 450 lbf.in (6.22 and 5.09 m.daN )

.
(k) VSV rod hose (340) to nipple (350). TORQUE to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )

.
(l) OVBD tube (600) to nipple (490). TORQUE to between 160 and 150 lbf.in (1.81 and 1.70 m.daN )

.
(11) Remove the 856A1494 FIXTURE,HANDLING-HMU (856A1494G01) from the HMU.
(12) Remove the blanking covers from the open end of the return heater hose (530) and the IDG tube (540).
(13) Connect the coupling nut connection of the servo heater return hose (530) at the servo fuel heater.
(14) Lubricate the gasket (510) with engine oil (Material No.CP2442) .
(15) Install the gasket (510) between the return heater hose (530) and the servo port on the HMU.

NOTE: Make sure that the hose flange is properly inserted and centered into the hose flange retainer or the gasket will fail.

(16) Install the return heater hose (530) on the HMU with bolts (520) and the washers (525). TORQUE the bolts (520) to between 53 and 47 lbf.in (0.60 and 0.53 m.daN )

.
(17) Torque the coupling nut of the servo heater return hose (530) at the servo fuel heater to between 770 and 650 lbf.in (8.70 and 7.35 m.daN )

.
(18) Lubricate the gasket (560) with engine oil (Material No.CP2442) .
(19) Install the gasket (560) between the IDG tube (540) and the IDG port of the HMU.

NOTE: Make sure that the hose flange is properly inserted and centered into the hose flange retainer or the gasket will fail.

(20) Install the IDG tube (540) on the HMU with bolts (550). TORQUE to between 53 and 47 lbf.in (0.60 and 0.53 m.daN )

.
(21) Remove the blanking covers from the electrical cable connectors.
(22) Connect the electrical connectors, Channel A (120) and Channel B (210), to the HMU. Tighten the connectors by hand plus one-eighth of a turn. If necessary, use PLIERS - NOSE, SOFT, LONG.
(23) Connect the electrical connectors (170) to the latching solenoid. Tighten the connectors by hand plus one-eighth of a turn. If necessary, use PLIERS - NOSE, SOFT, LONG.

POST CFMI SB 73-0071

(24) Install the downstream fuel filter (Ref. AMM TASK 73-11-45-400-001).

END of POST CFMI SB 73-0071

(25) Install the assembled fuel flow transmitter, fuel supply tube, inlet bracket, discharge bracket, and fuel supply hose on the HMU as follows:

NOTE: If you have disassembled the fuel flow transmitter when you removed the HMU, do the fuel flow transmitter assembly procedure (Ref. AMM TASK 73-31-10-400-002).

(a) Untorque to finger-tight the four bolts (610) that attach the fuel supply tube and the inlet bracket to the fuel flow transmitter.
(b) Untorque to finger-tight the four bolts (620) that attach the fuel supply hose and the discharge bracket to the fuel flow transmitter.
(c) Remove the blanking plugs from the discharge port of the HMU and from the fuel supply tube.
(d) Remove the blanking plugs from the fuel supply hose and the union (10) of the fuel injection supply tube.
(e) Lubricate the new AIPC 73-31-10-01-040 GASKET (110) with vaseline (Material No.CP5070) . Install the gasket (110) on the discharge port of the HMU.

CAUTION: VISUALLY EXAMINE THE GASKET PRIOR TO INSTALLATION. REFER TO AMM 70-21-00-918-002 FOR GASKET AND SEAL MAINTENANCE PRACTICES. USE CAUTION WHEN INSTALLING THE GASKET TO AVOID DAMAGE TO THE RUBBER SEAL.

(f) Install the fuel supply tube with bolts (100) on the discharge port of the HMU. Tighten only to finger tight.
(g) Connect the fuel supply hose at the union (10) of the fuel injection supply tube. Tighten the fuel supply hose with your hand.
(h) Install the discharge bracket on the HMU with bolts (60) and washers (70). Tighten only to finger tight.
(i) Install the inlet bracket on the HMU with bolts (80) and washers (90). Tighten only to finger tight.
(j) TORQUE the following:

CAUTION: YOU MUST DO THE STEPS THAT FOLLOW IN SEQUENCE OR DAMAGE TO THE FUEL SUPPLY TUBE OR FUEL FLOW TRANSMITTER COULD OCCUR.

1 Bolts (100) TORQUE to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

CAUTION: USE CARE WHEN TIGHTENING THE BOLTS TO ENSURE PROPER AND EVENLY DISTRIBUTED TORQUE IS APPLIED. REFER TO AMM 70-23-00-911-002 FOR TIGHTENING PROCEDURES.

2 Bolts (620) TORQUE to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
3 Bolts (610) TORQUE to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
4 Union (10) TORQUE to between 1100 and 900 lbf.in (12.43 and 10.17 m.daN )

.
5 Bolts (60) TORQUE to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
6 Bolts (80) TORQUE to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(26) Install the loop clamp (30) on the electrical connector (50). Attach the loop clamp (30) to the support bracket with the bolt (20) and the nut (40). TORQUE the bolt (20) to between 50 and 45 lbf.in (0.57 and 0.51 m.daN )

.
(27) Remove the blanking caps from the electrical connector (50) and the fuel flow transmitter.
(28) Connect the electrical connector (50) to the fuel flow transmitter. Tighten the connector (50) with your hand plus one-eighth of a turn. If necessary, use PLIERS - NOSE, SOFT, LONG.
(29) Remove the tools used to rotate the core as follows:
(a) Remove the engine turning tool adapter and breaker bar from the handcranking pad.
(b) Install the handcranking pad cover (Ref. AMM TASK 72-63-00-400-002).

Subtask 73-21-10-861-051-A ** ON A/C NOT FOR ALL

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

Subtask 73-21-10-860-053-A ** ON A/C NOT FOR ALL

C. Do the EIS start procedure (upper and lower ECAM display units only): (Ref. AMM TASK 31-60-00-860-001).

Subtask 73-21-10-410-052-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors: (Ref. AMM TASK 78-36-00-410-040).
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 73-21-10-865-053-A ** ON A/C NOT FOR ALL

E. 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
FOR FIN: 1000EM1 (ENGINE1)
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
49VU	ENGINE/1/HP FUEL SOV	1KC1	A01
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
FOR FIN: 1000EM2 (ENGINE2)
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
49VU	ENGINE/2/HP FUEL SOV	1KC2	A02
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26

Subtask 73-21-10-710-051-A ** ON A/C NOT FOR ALL

F. Do the test.
(1) Do an operational test of the FADEC on the ground (with engine motoring) (Ref. AMM TASK 73-29-00-710-040).
(2) Do a minimum idle check and check for leaks (Ref. AMM TASK 71-00-00-710-006).

Subtask 73-21-10-869-053-A ** ON A/C NOT FOR ALL

G. Do the EIS stop procedure: (Ref. AMM TASK 31-60-00-860-002).

Subtask 73-21-10-862-051-A ** ON A/C NOT FOR ALL

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

5. Close-up
Subtask 73-21-10-440-051-A ** ON A/C NOT FOR ALL

A. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 73-21-10-410-053-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Close the fan cowl doors: (Ref. AMM TASK 71-13-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 02:58:23 UTC