Installation of the Inlet Guide Vane - Actuator (131-9(A))

TASK 49-23-51-400-004-A
Installation of the Inlet Guide Vane - Actuator (131-9(A))

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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

REFERENCE	QTY	DESIGNATION
No specific	Torque wrench: range to between 0.374 and 0.306 m.daN (33.10 and 27.08 lbf.in )
No specific	Torque wrench: range to between 0.627 and 0.513 m.daN (55.49 and 45.40 lbf.in )
No specific	Torque wrench: range to between 1.49 and 1.23 m.daN (131.86 and 108.85 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.01ABB1)	Turbine Fuel-- Kerosene High Flash Point -
(Material No.01ABC1)	Turbine Fuel-- Wide-cut -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
315AL, 316AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
17	O-RINGS	AIPC 49-21-09-02-130
4	O-RINGS	AIPC 49-21-09-02-150
15	O-RINGS	AIPC 49-21-09-02-200

E. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied 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 49-00-00-710-010-A	Operational Test of the APU
TASK 52-41-00-010-001-A	Open the APU Doors for Access
TASK 52-41-00-410-001-A	Close the APU Doors after Access
Actuator - Inlet Guide Vanes ** ON A/C NOT FOR ALL
Actuator - Inlet Guide Vanes ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 49-23-51-941-057-A ** ON A/C NOT FOR ALL

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

Subtask 49-23-51-860-058-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) Make sure that there is 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).
(5) Make sure that the access platform is in position below the APU compartment.
(6) Make sure that the APU access doors are open (Ref. AMM TASK 52-41-00-010-001).

Subtask 49-23-51-865-064-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

4. Procedure
Subtask 49-23-51-420-054-A ** ON A/C NOT FOR ALL

A. Installation of the Inlet Guide Vane (IGV) - Actuator
(1) Clean the component interfaces and the adjacent area.
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Install the rod end (7) on the IGV actuator (5).
(5) TORQUE the rod end (7) to between 0.374 and 0.306 m.daN (33.10 and 27.08 lbf.in )

.
(6) Attach the IGV actuator (5) to the IGV actuation rod (8).
(7) Install the washer (14) and the captive bolt (10).
(8) TORQUE the captive bolt (10) to between 0.627 and 0.513 m.daN (55.49 and 45.40 lbf.in )

.
(9) Install the IGV actuator (5) to the APU with the bolts (13) and the washers (12).
(10) TORQUE the bolts (13) to between 1.49 and 1.23 m.daN (131.86 and 108.85 lbf.in )

.
(11) Apply a thin layer of Turbine Fuel-- Wide-cut - (Material No.01ABC1) or Turbine Fuel-- Kerosene High Flash Point - (Material No.01ABB1) to the new AIPC 49-21-09-02-150 O-RINGS (4), AIPC 49-21-09-02-200 O-RINGS (15) and AIPC 49-21-09-02-130 O-RINGS (17).
(12) Put the new:

AIPC 49-21-09-02-150 O-RINGS (4) on the fuel pipe (3)
AIPC 49-21-09-02-200 O-RINGS (15) on the fuel pipe (16)
AIPC 49-21-09-02-130 O-RINGS (17) on the fuel pipe (18).

(13) Put the fuel pipes (3), (16) and (18) in correct position into the IGV actuator (5).
(14) Turn the captive plate (2) into position on the fuel pipes (3) and (18) and connect the captive bolts (1).
(15) TORQUE the captive bolts (1) to between 0.627 and 0.513 m.daN (55.49 and 45.40 lbf.in )

.
(16) Turn cover (11) into position and tighten the bolts (9).
(17) TORQUE the bolts (9) to between 0.627 and 0.513 m.daN (55.49 and 45.40 lbf.in )

.
(18) Remove the blanking cap from the electrical connection and connect the electrical connection (6).

Subtask 49-23-51-420-054-B ** ON A/C NOT FOR ALL

.
(9) Install the IGV actuator (5) to the APU with the bolts (13) and washers (12).
(10) TORQUE the bolts (13) to between 1.49 and 1.23 m.daN (131.86 and 108.85 lbf.in )

AIPC 49-21-09-02-150 O-RINGS (4) on the fuel pipe (3)
AIPC 49-21-09-02-200 O-RINGS (15) on the fuel pipe (16)
AIPC 49-21-09-02-130 O-RINGS (17) on the fuel pipe (18).

(13) Put the fuel pipes (3), (16) and (18) in correct position into the IGV actuator (5).
(14) Turn the captive plate (2) into position on the fuel pipes (3) and (18) and install the bolts (1).
(15) TORQUE the bolts (1) to between 0.627 and 0.513 m.daN (55.49 and 45.40 lbf.in )

.
(16) Turn cover (11) into position and tighten the bolts (9).
(17) TORQUE the bolts (9) to between 0.627 and 0.513 m.daN (55.49 and 45.40 lbf.in )

.
(18) Remove the blanking cap from the electrical connection and connect the electrical connection (6).

Subtask 49-23-51-865-065-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
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

Subtask 49-23-51-710-054-A ** ON A/C NOT FOR ALL

C. Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-010).

Subtask 49-23-51-360-051-A ** ON A/C NOT FOR ALL

D. Inspect the APU.
(1) Examine the IGV actuator and the fuel pipes for the fuel leaks.

NOTE: No leaks are permitted.

5. Close-up
Subtask 49-23-51-410-055-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-410-001).
(3) Remove the access platform(s).

Subtask 49-23-51-865-066-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
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

Subtask 49-23-51-860-059-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Put the related hydraulic system in the pressurized configuration (Ref. AMM TASK 29-00-00-864-001).
(2) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 12:41:47 UTC