Check Torque of Quick-Attach-Detach (QAD) Tension-Bolt (New EPGS)

TASK 24-21-41-200-010-B
Check Torque of Quick-Attach-Detach (QAD) Tension-Bolt (New EPGS)

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

ZONE: 438
ZONE: 448

1. Reason for the Job
Refer to the MPD TASK: 242100-06
CHECK TORQUE OF QUICK-ATTACH-DETACH (QAD) TENSION BOLT
To do a torque check of the IDG QAD adapter tension bolt without component removal.
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 26 and 22 lbf.ft (3.53 and 2.98 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V02-147)	lockwire

C. Work Zones and Access Panels

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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 24-21-41-000-010-A	Removal of the Quick Attach/Detach (QAD) Adapter of the IDG
TASK 24-21-41-400-010-B	Installation of the Quick-Attach-Detach (QAD) Adapter of the IDG
TASK 24-21-51-000-010-A	Removal of the Integrated Drive Generator -IDG 1(2)
TASK 24-21-51-400-010-B	Installation of the Integrated Drive Generator - IDG 1(2), (New EPGS)
TASK 70-23-11-911-013-A	General Torque Tightening Techniques
TASK 70-40-11-911-012-A	General Instructions for the Uses of Lockwire
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)
IDG QAD Coupling

3. Job Set-up
Subtask 24-21-41-941-057-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) 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) in position to tell persons not to energize the FADEC 1(2).

Subtask 24-21-41-010-067-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

4. Procedure
Subtask 24-21-41-220-053-A ** ON A/C NOT FOR ALL

A. Torque Check of the QAD Adapter Tension-Bolt

IDG QAD Coupling ** ON A/C NOT FOR ALL

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(1) Cut and remove the lockwire.
(2) Do a check of the torque value of the QAD coupling bolt (2):
(a) TORQUE the QAD coupling bolt to between 26 and 22 lbf.ft (3.53 and 2.98 m.daN )

, (Ref. AMM TASK 70-23-11-911-013).
(b) Lightly hit the external circumference of the QAD coupling (3) to enter it and prevent incorrect torque values.
(c) TORQUE the QAD coupling bolt to between 26 and 22 lbf.ft (3.53 and 2.98 m.daN )

, (Ref. AMM TASK 70-23-11-911-013).
(d) Continue to do this sequence until the torque value does not decrease by more than 24 lbf.in (0.27 m.daN).
(3) Do a check of the distance between the ring lug and the bracket of the QAD coupling:
(a) If the distance is less than 0.125 in. (3.2 mm):
1 Replace the IDG (Ref. AMM TASK 24-21-51-000-010) and (Ref. AMM TASK 24-21-51-400-010) but let the IDG accessory hoist installed, do not attach tubes, harnesses and other components.
2 Measure the distance again
a If the distance is correct:

Safety the QAD coupling bolt (2) with lockwire (Material No.V02-147) (Ref. AMM TASK 70-40-11-911-012) and remove the IDG accessory hoist, attach components, the tube and the harnesses.

NOTE: When you send the worn IDG that you removed to the work shop, you must tell them to replace the input flange.

b If the distance is not correct:

Remove the new IDG (Ref. AMM TASK 24-21-51-000-010) to replace the QAD coupling (Ref. AMM TASK 24-21-41-000-010) and (Ref. AMM TASK 24-21-41-400-010).

(b) If the distance is more than 0.125 in. (3.2 mm):
1 Safety the QAD coupling bolt (2) with lockwire (Material No.V02-147) (Ref. AMM TASK 70-40-11-911-012).

5. Close-up
Subtask 24-21-41-410-063-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):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.03.31 23:20:45 UTC