Installation of the Aft Sump Drain Tube [CFML]

TASK 71-71-49-400-804-A
Installation of the Aft Sump Drain Tube

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.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 400

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.52 and 0.48 m.daN (46 and 42 lbf.in )
No specific	Torque wrench: range to between 6 and 5 m.daN (44 and 37 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2101)	Graphite grease
(Material No.CP2442)	Engine oil
(Material No.CP8001)	Safetywire
(Material No.CP8002)	Safetywire

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-710-815-A	Idle Leak Check
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 78-30-00-040-809-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-809-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-806-A	Opening of the Thrust Reverser Cowl Doors
TASK 78-36-00-410-806-A	Closing of the Thrust Reverser Cowl Doors
Aft Sump Drain Tube

3. Job Set-up
Subtask 71-71-49-941-057-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate:

The ENG/MODE selector switch and
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).

Subtask 71-71-49-010-066-A

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR.
(2) Make sure that the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE is in position.

Subtask 71-71-49-040-058-A

C. Deactivation of the Thrust Reverser (T/R) System for Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Make sure that you did the deactivation of the T/R system for maintenance (Ref. AMM TASK 78-30-00-040-809).

Subtask 71-71-49-010-067-A

D. Get Access
(1) Make sure that the T/R cowl doors are open (Ref. AMM TASK 78-36-00-010-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL, 452AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL, 462AR.

4. Procedure
Subtask 71-71-49-420-060-A

WARNING: USE PERSONAL PROTECTION EQUIPMENT. USE THE ENGINE OIL IN A WELL-VENTILATED AREA. ENGINE OIL IS TOXIC.

A. Installation of the Aft Sump Drain Tube

Aft Sump Drain Tube

(1) Remove all the COVER - PROTECTION and the CAP - PROTECTION from the openings, tubes and hoses.
(2) Make sure that mating surfaces are clean and clear of unwanted materials.
(3) Lubricate the threads of the coupling nut (6) and the nipple of the oil drain tube (7) with the Engine oil (Material No.CP2442) .
(4) Lubricate the threads of the nut (2) with Graphite grease (Material No.CP2101) .
(5) Connect the aft sump drain tube (1) to the oil drain tube (7).
(6) Hand tighten the coupling nut (6).
(7) Attach the aft sump drain tube (1) to the bracket (5) with the clamp (4), the bolt (3) and the nut (2).

CAUTION: USE TWO WRENCHES TO LOOSEN OR TIGHTEN THE TUBE COUPLING NUT. ONE WRENCH TO HOLD THE UNION AND ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT. THIS PREVENTS DAMAGE TO THE HARDWARE.

(8) TORQUE the coupling nut (6) to between 6 and 5 m.daN (44 and 37 lbf.ft )

.
(9) TORQUE the nut (2) to between 0.52 and 0.48 m.daN (46 and 42 lbf.in )

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.

(10) Safety the coupling nut (6) to the oil drain tube (7) with Safetywire (Material No.CP8001) or Safetywire (Material No.CP8002) .

5. Close-up
Subtask 71-71-49-410-058-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the T/R cowl doors (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL, 452AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL, 462AR.
(3) Remove the access platform(s).

Subtask 71-71-49-440-055-A

B. Do the reactivation of the T/R system after maintenance (Ref. AMM TASK 78-30-00-440-809).

Subtask 71-71-49-790-051-A

C. Test(s)
(1) Do the idle leak check of the engine (Ref. AMM TASK 71-00-00-710-815).

Subtask 71-71-49-410-059-A

D. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR.
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.02 07:32:21 UTC