Removal of Flow Divider and Solenoid Valve (131-9(A))

TASK 49-32-13-000-001-A
Removal of Flow Divider and Solenoid Valve (131-9(A))

WARNING: DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
315AL, 316AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 52-41-00-010-001-A	Open the APU Doors for Access
Flow Divider and Solenoid (PRE VSB 49-7739)
Flow Divider and Solenoid (POST VSB 49-7739)

3. Job Set-up
Subtask 49-32-13-941-052-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Obey the Fuel Safety Procedures (Ref. AMM TASK 28-00-00-910-001).

Subtask 49-32-13-860-052-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) On the panel 25VU, make sure that the APU MASTER SW p/bsw is OFF.
(3) Put a warning notice in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).

Subtask 49-32-13-865-054-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
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

Subtask 49-32-13-010-052-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the APU access doors 315AL and 316AR.
(2) Open the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-010-001).
(3) Set the LIGHT SW 11LJ to the ON position.

4. Procedure
Subtask 49-32-13-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Flow Divider

CAUTION: PUT PLASTIC CAPS OR PLUGS ON ALL FUEL AND/OR LUBRICATION SYSTEM COMPONENTS AND LINES. IF YOU USE TAPE, CLOTH, OR METAL CAPS ON THEM, YOU CAN DAMAGE THE APU.

CAUTION: YOU MUST USE TWO WRENCHES AND HOLD THE COMPONENT WHEN YOU REMOVE/INSTALL THE PIPE COUPLINGS AND/OR UNIONS. THIS PREVENTS DAMAGE TO THE COMPONENT.

(1) If the VSB 49-7739 is not incorporated:

Flow Divider and Solenoid (PRE VSB 49-7739) ** ON A/C NOT FOR ALL

(a) Disconnect the electrical connector (12) from the solenoid (17).
(b) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(c) Put a CONTAINER 5 L (1.32 USGAL) below the flow divider (1).
(d) Disconnect the primary manifold fuel pipe (15) from the flow divider (1).
(e) Disconnect the main fuel feed pipe (16) from the flow divider (1).
(f) Disconnect the secondary manifold fuel pipe (9) from the union (8).
(g) Remove the bolt (14) and the nut (5) and disconnect the bonding lead (6).
(h) Remove the bolt (11) and open the clamp (10).
(i) Remove the flow divider (1), the solenoid (17) and the union (8) from the APU.
(j) Put the PLUG-BLANKING in each disconnected line end.
(k) Remove and discard the O-ring (7).
(l) Loosen the nut (2) and remove the flow divider (1) from the solenoid (17).
(m) Remove and discard the O-ring (4) and the retainer ring (3).

(2) If the VSB 49-7739 is incorporated:

Flow Divider and Solenoid (POST VSB 49-7739) ** ON A/C NOT FOR ALL

(a) Disconnect the electrical connector (12) from the solenoid (9).
(b) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(c) Put a CONTAINER 5 L (1.32 USGAL) below the flow divider (1).
(d) Disconnect the primary manifold fuel pipe (14) from the flow divider (1).
(e) Disconnect the main fuel feed pipe (15) from the flow divider (1).
(f) Disconnect the secondary manifold fuel pipe (8) from the check valve (7).
(g) Remove the bolt (16) and the nut (5) and disconnect the bonding lead (6).
(h) Remove the bolt (11) and open the clamp (10).
(i) Remove the flow divider (1), the solenoid (9) and the check valve (7) from the APU.
(j) Put the PLUG-BLANKING in each disconnected line end.
(k) Loosen the nut (2) and remove the check valve (7) from the solenoid (9).
(l) Remove and discard the O-ring (4) and the retainer ring (3).
(m) Loosen the nut (17) and remove the flow divider (1) from the solenoid (9).
(n) Remove and discard the O-ring (19) and the retainer ring (18).

[Rev.10 from 2021] 2026.04.01 12:43:00 UTC