Removal of the Quick Attach/Detach (QAD) Adapter of the IDG

TASK 24-21-41-000-040-A
Removal of the Quick Attach/Detach (QAD) Adapter of the IDG

FIN: 4000XU ** 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	COVER - PROTECTION
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-21-51-000-040-A	Removal of the Integrated Drive Generator - IDG 1(2)
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
IDG Quick Attach/Detach (QAD) Adapter
Removal of the QAD Adapter (Coupling)

3. Job Set-up
Subtask 24-21-41-941-052-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) in position to tell persons not to start the engine.
(2) 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) in position to tell persons not to energize the FADEC 1(2).

Subtask 24-21-41-010-053-A ** ON A/C NOT FOR ALL

B. 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

4. Procedure
Subtask 24-21-41-020-052-A ** ON A/C NOT FOR ALL

A. Remove the Integrated Drive Generator (IDG) (Ref. AMM TASK 24-21-51-000-040).

Subtask 24-21-41-020-053-A ** ON A/C NOT FOR ALL

B. Removal of the QAD Adapter
(1) To remove the QAD adapter (2) from the accessory-gearbox mounting-pad (1):

hit the head of each flat head screw (3) with a flat head punch (5).

NOTE: Flat head screws (3) rub or get caught in mating parts. Strong contact is required to loosen the flat head screws.

CAUTION: YOU CAN DAMAGE THE SCREWS IF YOU USE TOO MUCH FORCE TO HIT THE PUNCH.

(2) If you cannot loosen flat head screws:

get a pointed punch (7).
put the pointed punch (7) on the screw (3) with an angular position which will make the screw turn counterclockwise.
hit the screw.

(3) Remove the screws (3) that attach the QAD adapter (2) to the accessory-gearbox mounting-pad.
(4) Pull the QAD adapter (2) away from the accessory-gearbox mounting-pad.

NOTE: If you cannot easily release the QAD adapter (2) from the mounting-pad, lightly hit the QAD adapter with a soft-faced mallet.

(5) Discard the gasket (6) only if it is damaged or shows signs of excessive wear.
(6) Install the COVER - PROTECTION on the accessory-gearbox mounting-pad (1).

[Rev.10 from 2021] 2026.03.31 23:20:35 UTC