Installation of the Oil Tank Pressurization Valve [IAE]

TASK 79-11-51-400-010-A
Installation of the Oil Tank Pressurization Valve

WARNING: DO NOT LET ENGINE OIL STAY ON YOUR SKIN FOR A LONG TIME. FLUSH THE OIL FROM YOUR SKIN WITH WATER. THE OIL IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY.

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

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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 45 and 36 lbf.in (0.51 and 0.41 m.daN )
No specific	Torque wrench: range to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )
No specific	Torque wrench: range to between 200 and 180 lbf.in (2.26 and 2.03 m.daN )
No specific	Torque wrench: range to between 513 and 478 lbf.in (5.80 and 5.40 m.daN )
IAE1R18002	1	WRENCH

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V02-126)	lockwire

C. Work Zones and Access Panels

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

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
12	PACKING	AIPC 79-11-51-80-040
14	PACKING	AIPC 79-11-51-80-060

E. Referenced Information

REFERENCE	DESIGNATION
TASK 70-23-11-911-013-A	General Torque Tightening Techniques
TASK 70-23-13-911-010-A	Procedures for the Installation of Preformed Packings
TASK 70-40-11-911-014-A	Locking Devices General Information
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)
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
Oil Tank Pressurization Valve

3. Job Set-up
Subtask 79-11-51-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 79-11-51-010-051-A ** ON A/C NOT FOR ALL

B. Make sure that the fan cowls are open: (Ref. AMM TASK 71-13-00-010-010)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 79-11-51-040-050-A ** ON A/C NOT FOR ALL

C. Make sure that the thrust reverser Hydraulic Control Unit (HCU) is deactivated (Ref. AMM TASK 78-30-00-040-012)

4. Procedure
Subtask 79-11-51-420-050-A ** ON A/C NOT FOR ALL

A. Install the Pressurization Valve on the Oil Tank:

Oil Tank Pressurization Valve ** ON A/C NOT FOR ALL

(1) Remove the PLUG-BLANKING from each disconnected line end.
(2) Install the new AIPC 79-11-51-80-040 PACKING (12) and AIPC 79-11-51-80-060 PACKING (14) (Ref. AMM TASK 70-23-13-911-010) in the grooves of the pressurization valve (13).
(3) Carefully move the free ends of the oil tubes (1) and (2) so as to let the pressurization valve (13) be installed on the oil tank (15).
(4) Install the pressurization valve (13) on the seat on the top of the oil tank (15).
(5) Install the bracket (16) on to the two studs on the oil tank flange.
(6) Install the two nuts (17).
(7) TORQUE the two nuts (17) to between 200 and 180 lbf.in (2.26 and 2.03 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(8) Put the flange of the the oil tank breather tube (2) over the pressurization valve (13) and align the bolt holes.
(9) Put the bracket (5) in to position on the flange of the oil tank breather tube (2).
(10) Install the washer (3) and the three bolts (6).
(11) TORQUE the three bolts (6) to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(12) Connect the oil tube (11) to the oil tube (1).
(13) TORQUE the tube connector to between 513 and 478 lbf.in (5.80 and 5.40 m.daN )

(Ref. AMM TASK 70-23-11-911-013). Use the IAE1R18002 WRENCH.
(14) Safety the tube connector with lockwire (Material No.V02-126) (Ref. AMM TASK 70-40-11-911-014).
(15) Put the clip (7) in position on the bracket (5) and attach it with the washer (9) and the bolt (10).
(16) TORQUE the bolt (10) to between 45 and 36 lbf.in (0.51 and 0.41 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

5. Close-up
Subtask 79-11-51-410-050-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 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] 2026.04.02 07:44:40 UTC