Installation of the Oil Tank Deaerator [PW11]

TASK 79-11-03-400-801-A
Installation of the Oil Tank Deaerator

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

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
Use this procedure to install the deaerator on the oil tank.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	STEPLADDER 0.5 M (1.6 FT)
No specific	Torque wrench: range to between 44 and 38 lbf.in (0.50 and 0.43 m.daN )
No specific	Torque wrench: range to between 95 and 78 lbf.in (1.07 and 0.88 m.daN )
No specific	Torque wrench: range to between 90 and 80 lbf.in (1.02 and 0.90 m.daN )
No specific	Torque wrench: range to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P03-001)	lubricant, aircraft turbine engine
(Material No.P06-054)	compound, paste, anti-seize

C. Work Zones and Access Panels

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

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
51	PACKING	EIPC 79-11-01-01-090
15	PACKING	EIPC 79-11-01-01-143
4	PACKING	EIPC 79-11-01-01-145

E. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-720-811-A	Test No. 3A - Idle Power Test
TASK 71-00-00-860-832-A	Procedure to Prevent Engine Motoring and to Stop the Electrical Supply to the EEC
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 73-25-34-400-802-A	Installation of the Engine Interface Unit (EIU)
TASK 79-00-00-610-801-A	Check and Fill the Engine Oil
TASK 79-35-21-400-801-A	Installation of the Oil-Debris Monitoring (ODM) Sensor
Installation of the Oil Tank Deaerator

3. Job Set-up
Subtask 79-11-03-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring and to stop the electrical supply to the Electronic Engine Control (EEC)
(Ref. AMM TASK 71-00-00-860-832).

Subtask 79-11-03-010-051-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR
(2) Make sure that the STEPLADDER 0.5 M (1.6 FT) is in position.

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 79-11-03-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Oil Tank Deaerator
(1) Removal of the protection covers

CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.

(a) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.
(2)

Installation of the Oil Tank Deaerator ** ON A/C NOT FOR ALL

(a) Apply the P03-001lubricant, aircraft turbine engine on a new EIPC 79-11-01-01-145 PACKING (4).
(b) Install the packing (4) in the deaerator (3) groove.
(c) Make sure that the packing (4) is correctly installed in the deaerator (3) groove.
(d) Install the deaerator (3) on the main oil tank.
(e) Apply the P06-054compound, paste, anti-seize to the threads of the four bolts (1).
1 For new or refurbished bolts or nuts with baked on lubricant, do not do the wet application.
(f) Install the deaerator (3) on the oil tank with the four bolts (1) and the four washers (2) fingertight.
(g) TORQUE the four bolts (1) to between 95 and 78 lbf.in (1.07 and 0.88 m.daN )

.
(3)

Installation of the Oil Tank Deaerator ** ON A/C NOT FOR ALL

(a) Apply the P03-001lubricant, aircraft turbine engine to a new EIPC 79-11-01-01-143 PACKING (15).
(b) Install the packing (15) on the vent valve (14) groove.
(c) Make sure that the packing (15) is correctly installed in the vent valve (14) groove.
(d) Align the vent valve (14) tab with the deaerator (3) slot and push the vent valve (14) into the deaerator until it stops.
(4)

Installation of the Oil Tank Deaerator ** ON A/C NOT FOR ALL

(a)

Installation of the Oil Tank Deaerator ** ON A/C NOT FOR ALL

1 For new or refurbished bolts or nuts with baked on lubricant, do not do the wet application.
(b)

Installation of the Oil Tank Deaerator ** ON A/C NOT FOR ALL

(e) TORQUE the three bolts (37) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )

in small increments and until the same torque indication holds.
(f) Install the tube (LB03) (25) on the fan case and two brackets with the two clamps (26) and four bolts (27) fingertight.
(g) Install the tube (LB03) (25) and bracket (50) on the deaerator with the three bolts (49).
(h) TORQUE the three bolts (49) to between 90 and 80 lbf.in (1.02 and 0.90 m.daN )

equally in an opposite pattern until the same torque indication holds.
(i)

Installation of the Oil Tank Deaerator ** ON A/C NOT FOR ALL

(j)

Installation of the Oil Tank Deaerator ** ON A/C NOT FOR ALL

(k) Examine the assembly for foreign objects, damage and correct assembly.

Subtask 79-11-03-410-052-A ** ON A/C NOT FOR ALL

B. Install the Oil-Debris Monitoring (ODM) sensor (Ref. AMM TASK 79-35-21-400-801).

Subtask 79-11-03-610-050-A ** ON A/C NOT FOR ALL

C. Fill the engine with oil (Ref. AMM TASK 79-00-00-610-801).

5. Close-up
Subtask 79-11-03-410-050-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 cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
(5) Make sure that all the circuit breakers shown in the paragraph Procedure of the engine interface unit installation are closed. If they are not, close them in the recommended sequence
(Ref. AMM TASK 73-25-34-400-802).

Subtask 79-11-03-720-050-A ** ON A/C NOT FOR ALL

B. Test(s)
(1) Do the test No. 3 - Power Plant - Operation Test (Idle Power Test) (Ref. AMM TASK 71-00-00-720-811).

[Rev.10 from 2021] 2026.04.01 03:41:27 UTC