Check Supply and Scavenge Filters Clogging Indicator Position [CFMI]

TASK 79-21-10-210-001-A
Check Supply and Scavenge Filters Clogging Indicator Position

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Refer to the MPD TASK: 792000-C1
CHECK SUPPLY AND SCAVENGE FILTERS CLOGGING INDICATOR POSITION
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2442)	engine oil
(Material No.CP8001)	lockwire 0.032 in. (0.8 mm) dia.
(Material No.CP8002)	lockwire 0.032 in. (0.8 mm) dia

C. Work Zones and Access Panels

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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 79-21-10-000-003-A	Removal of the Lube Supply and/or Common Scavenge Filters
TASK 79-21-10-400-003-A	Installation of the Lube Supply and/or Common Scavenge Filters
Lube Supply and Common Scavenge Filters Clogging Indicators

3. Job Set-up
Subtask 79-21-10-941-053-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 79-21-10-010-053-A ** ON A/C NOT FOR ALL

B. Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure

NOTE: Collection of unwanted material in the lubrication system scavenge filters or on the magnetic chip detectors can indicate parts damage in the oil wetted sections of the engine. Depending on the time since the last shop visit, the filters may collect material unrelated to the engine parts, such as shotpeen remaining material of approximately 0.008 inch (0.2 mm), tool fragments, or machining chips. For the description and identification of the different types of collected particles, refer to the Non-Destructive Test Manual, Part 10, Chip Analysis.

Subtask 79-21-10-210-052-A ** ON A/C NOT FOR ALL

A. Check position of clogging indicator. If the indicator is red, replace the corresponding filter (Ref. AMM TASK 79-21-10-000-003) and (Ref. AMM TASK 79-21-10-400-003) and set clogging indicator operational as follows:
(1) Cut and remove lockwire. Loosen and remove knurled coupling nut and transparent plug.
(2) Reset by pushing in clogging indicator with thumb.
(3) Lightly coat threads of knurled coupling nut with engine oil (Material No.CP2442) . Hand-tighten knurled coupling nut and transparent plug and wirelock with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.

5. Close-up
Subtask 79-21-10-410-053-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 left fan cowl door: (Ref. AMM TASK 71-13-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:38:03 UTC