Installation of the Adapter Housing [IAE]

TASK 73-12-41-400-011-B
Installation of the Adapter Housing

FIN: 2001EM ** 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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 45 and 36 lbf.in (0.51 and 0.41 m.daN )
No specific	Torque wrench: range to between 220 and 180 lbf.in (2.49 and 2.03 m.daN )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AL, 448AR

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
226	SEALING RING	AIPC 73-12-41-80-150

D. Referenced Information

REFERENCE	DESIGNATION
TASK 70-23-11-911-013-A	General Torque Tightening Techniques
TASK 70-23-13-911-010-A	Procedures for the Installation of Preformed Packings
TASK 71-00-00-710-012-B	Test No.3 : Idle Leak Check
TASK 71-00-00-710-046-B	Test No.2 : Wet Motor Leak Check
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 73-12-41-400-010-B	Installation of the Low Pressure (LP)/High Pressure (HP) Fuel Pump
Adapter Housing

3. Job Set-up
Subtask 73-12-41-860-053-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) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 73-12-41-010-063-A ** ON A/C NOT FOR ALL

B. Make sure that the fan cowls are open (Ref. AMM TASK 71-13-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 73-12-41-420-061-A ** ON A/C NOT FOR ALL

A. Installation of the adapter housing (227)

Adapter Housing ** ON A/C NOT FOR ALL

(1) Remove the applicable covers/caps/plugs from all of the openings.
(2) Install a new AIPC 73-12-41-80-150 SEALING RING (226) (226) on the adapter housing (227) (Ref. AMM TASK 70-23-13-911-010).
(3) Install the adapter housing (227) on the gearbox (225).
(4) Install the bracket (224), the two nuts (223), the four washers (221) and the four nuts (222).
(5) TORQUE the nuts (222) and (223) to between 220 and 180 lbf.in (2.49 and 2.03 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(6) Attach the clip (231) to the bracket (234) with the bolt (232) and the washer (233) at Detail AE.
(7) TORQUE the bolt (232) to between 45 and 36 lbf.in (0.51 and 0.41 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

Subtask 73-12-41-410-058-A ** ON A/C NOT FOR ALL

B. Install the LP/HP fuel pump (Ref. AMM TASK 73-12-41-400-010).

Adapter Housing ** ON A/C NOT FOR ALL

5. Close-up
Subtask 73-12-41-410-059-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 fan cowls (Ref. AMM TASK 71-13-00-410-010):
(3) FOR [1000EM1] (ENGINE-1)
437AL 438AL
(4) FOR [1000EM2] (ENGINE-2)
447AL 448AL
(5) Remove the WARNING NOTICE(S).

Subtask 73-12-41-790-053-A ** ON A/C NOT FOR ALL

B. Test Requirements
(1) Do an idle leak check (Ref. AMM TASK 71-00-00-710-012).

NOTE: A wet motor leak check (Ref. AMM TASK 71-00-00-710-046) may be used to check for leaks, but this must be followed by an idle leak check (Ref. AMM TASK 71-00-00-710-012).

[Rev.10 from 2021] 2026.04.01 03:00:19 UTC