Check IDG Oil Filter Differential Pressure Indicator (DPI)

TASK 24-21-51-200-011-A
Check IDG Oil Filter Differential Pressure Indicator (DPI)

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.

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	LIGHT SOURCE - INSPECTION
No specific	AR	MIRROR - INSPECTION
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 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)
TSM 24-21-00-810-815	The Differential Pressure Indicator (DPI) of the IDG1 Oil Filter is Extended - Alternate Procedure
TSM 24-21-00-810-816	The Differential Pressure Indicator (DPI) of the IDG2 Oil Filter is Extended - Alternate Procedure
Differential Pressure Indicator (DPI) of the Oil Filter

3. Job Set-up
Subtask 24-21-51-941-051-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) 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) to tell persons not to energize the FADEC 1(2).

Subtask 24-21-51-010-051-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 24-21-51-210-060-A ** ON A/C NOT FOR ALL

A. Visual Inspection of the DPI of the Oil Filter
(1) Make sure that the red button of the DPI is not extended.
Use an LIGHT SOURCE - INSPECTION and an MIRROR - INSPECTION, if necessary.
(a) If the red button is extended from the end of the indicator.

Do the alternate procedure:
The differential pressure indicator (DPI) of the IDG1(2) oil filter is extended TSM 24-21-00-810-815 or TSM 24-21-00-810-816.

5. Close-up
Subtask 24-21-51-410-051-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 23:21:41 UTC