Removal of the Bleed Valve Fuel Gear Motor Assembly [CFMI]

TASK 75-31-10-000-001-A
Removal of the Bleed Valve Fuel Gear Motor Assembly

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** 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 1M(3 FT)
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP5066)	fuel system preventative

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-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 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 72-23-00-000-005-A	Removal of the Fan Duct Panels
TASK 75-31-20-000-001-A	Removal of the Bleed Valve Stop Mechanism
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
VBV Fuel Gear Motor

3. Job Set-up
Subtask 75-31-10-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 75-31-10-861-051-A ** ON A/C NOT FOR ALL

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

Subtask 75-31-10-865-052-A ** ON A/C NOT FOR ALL

C. Open, safety and tag 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
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
FOR FIN: 1000EM2 (ENGINE2)
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26

Subtask 75-31-10-010-050-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.

Subtask 75-31-10-040-050-A ** ON A/C NOT FOR ALL

E. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 75-31-10-010-052-A ** ON A/C NOT FOR ALL

F. Open the thrust reverser doors (Ref. AMM TASK 78-36-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

4. Procedure
Subtask 75-31-10-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Bleed Valve Fuel Gear Motor from the Stop Mechanism
(1) Remove the fan duct panel between the fan frame struts at the 9 and 10 o'clock positions (Ref. AMM TASK 72-23-00-000-005). This gives access to the master Variable Bleed Valve (VBV) door and to the VBV system stop mechanism.
(2) Remove the bleed valve fuel gear motor (40) and the VBV stop mechanism (140) as a complete assembly (Ref. AMM TASK 75-31-20-000-001).
(3) Remove the fuel gear motor (40) from the stop mechanism (140) as follows:
(a) Remove the 4 bolts (100) and washers (110) that attach the fuel gear motor (40) to the base plate of stop mechanism (140). Move the items (40) and (140) apart to complete the removal of the fuel gear motor (40).
(b) Remove the O-ring (130) from the fuel gear motor mounting diameter. Discard O-ring (130).

Subtask 75-31-10-620-051-A ** ON A/C NOT FOR ALL

B. Preserving of the Bleed Valve Fuel Gear Motor
(1) Put fuel system preventative (Material No.CP5066) into one port of the fuel gear motor.
(2) Rotate the motor shaft until the fluid flows from the opposite port.
(3) Install CAP - BLANKING on the ports of fuel gear motor.

[Rev.10 from 2021] 2026.04.01 03:09:30 UTC