Installation of the Oil Pressure Transmitter [CFMB]

TASK 79-33-15-400-041-A
Installation of the Oil Pressure Transmitter

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: 210
ZONE: 400
FIN: 4003EN ** 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	COVER - PROTECTION
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )
No specific	Torque wrench: range to between 35 and 30 lbf.in (0.40 and 0.34 m.daN )
No specific	Torque wrench: range to between 120 and 110 lbf.in (1.36 and 1.24 m.daN )
No specific	Torque wrench: range to between 160 and 150 lbf.in (1.81 and 1.70 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2442)	engine oil

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
15	PACKINGS	AIPC 79-33-15-01-020

E. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 71-00-00-710-006-B	Minimum Idle Check
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
Oil Pressure Transmitter

3. Job Set-up
Subtask 79-33-15-865-051-A ** ON A/C NOT FOR ALL

A. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
121VU	ENGINE/ENG1/OIL/PRESS	2EN1	N40
FOR FIN: 1000EM2 (ENGINE2)
121VU	ENGINE/ENG2/OIL/PRESS	2EN2	N42

Subtask 79-33-15-860-050-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) On the center pedestal, on ENG control panel 115VU:
(a) Make sure that the WARNING NOTICE(S) is in position to tell persons not to start the engine.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the two thrust reverser control-levers.
(2) On overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/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 79-33-15-010-051-A ** ON A/C NOT FOR ALL

C. Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.

4. Procedure
Subtask 79-33-15-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Oil Pressure Transmitter
(1) Remove the COVER - PROTECTION from the electrical connector, the oil pressure transmitter (25), the tee fitting and the tube coupling nuts.
(2) Lubricate the new AIPC 79-33-15-01-020 PACKINGS (15) with engine oil (Material No.CP2442) .
(3) Install the packings (15) and the unions (20) in the transmitter (25).
(4) TORQUE the unions (20) to between 120 and 110 lbf.in (1.36 and 1.24 m.daN )

.
(5) Attach the transmitter (25) to the bracket with the bolts (5) and the clamps (10).
(6) TORQUE the bolts (5) to between 35 and 30 lbf.in (0.40 and 0.34 m.daN )

.
(7) Connect the tube (28) to the union (20) and to the tee fitting.
(8) Connect the tube (32) to the tee fitting and to the tube fitting.
(9) TORQUE the coupling nuts on the tubes (28) and (32) and the tee fitting to between 160 and 150 lbf.in (1.81 and 1.70 m.daN )

.
(a) Use a second wrench to hold the union when you torque the coupling nut.
(10) Connect electrical connector 4003ENA to the transmitter (25).
(a) Tighten the connector with your hand plus one-eighth turn.
(11) Install the bonding strap (30) on the oil pressure transmitter (25).
(a) Install the washer (40), the bonding strap (30), the washers (45) and the nut (50) on the ground stud on the bracket.
(b) Install the bolt (35), the washers (40) and (45), the bonding strap (30) and the nut (50) on the oil pressure transmitter (25).
(c) TORQUE the nuts (50) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

.
(d) Make sure that the electrical resistance from the ground stud to the oil pressure transmitter does not exceed 0.0025 ohm.

Subtask 79-33-15-865-052-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
121VU	ENGINE/ENG1/OIL/PRESS	2EN1	N40
FOR FIN: 1000EM2 (ENGINE2)
121VU	ENGINE/ENG2/OIL/PRESS	2EN2	N42

Subtask 79-33-15-942-050-A ** ON A/C NOT FOR ALL

C. Remove the WARNING NOTICE(S).

Subtask 79-33-15-861-050-A ** ON A/C NOT FOR ALL

D. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 79-33-15-860-051-A ** ON A/C NOT FOR ALL

E. Do the EIS start procedure (lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).

Subtask 79-33-15-710-050-A ** ON A/C NOT FOR ALL

F. Do a minimum idle check (Ref. AMM TASK 71-00-00-710-006) and do a check for leaks.

Subtask 79-33-15-860-052-A ** ON A/C NOT FOR ALL

G. Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).

5. Close-up
Subtask 79-33-15-862-050-A ** ON A/C NOT FOR ALL

A. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 79-33-15-410-050-A ** ON A/C NOT FOR ALL

B. 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 71-13-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.

[Rev.10 from 2021] 2026.04.01 03:39:46 UTC