Installation of the Oil Pressure Transmitter [CFMI]

TASK 79-33-15-400-040-A
Installation of the Oil Pressure Transmitter

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL
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	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 100 and 90 lbf.in (1.13 and 1.02 m.daN )
No specific	Torque wrench: range to between 120 and 110 lbf.in (1.36 and 1.24 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2442)	engine oil

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
35	PACKING	AIPC 79-33-15-01-080

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-A	Minimum Idle Check
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
Oil Pressure Transmitter

3. Job Set-up
Subtask 79-33-15-860-054-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU:
(a) make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(b) Make sure that a WARNING NOTICE(S) is in position to tell persons that both thrust reverser control lever are not operational.
(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 79-33-15-010-055-A ** ON A/C NOT FOR ALL

B. 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

Subtask 79-33-15-865-054-A ** ON A/C NOT FOR ALL

C. 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

4. Procedure
Subtask 79-33-15-420-052-B ** ON A/C NOT FOR ALL

A. Installation of the Oil Pressure Transmitter.
(1) Lubricate the packing (35) with engine oil (Material No.CP2442) .
(2) Remove the protective covers from the oil pressure transmitter ports and the tubes.
(3) Install the AIPC 79-33-15-01-080 PACKING (35) and the unions (30) to the transmitter (10). TORQUE the unions to between 120 and 110 lbf.in (1.36 and 1.24 m.daN )

.
(4) Put the transmitter (10) on the bracket and install the bolts (15), the isolators (80), the washers (20), the nuts (75), and the cotter pins (70).
(5) Tighten the nuts (75) as follows:
(a) Tighten the nuts (75) with your hand until all clearances are removed, but the insolators (80) are not compressed.
(b) Tighten the nuts (75) further to the second pin slot and install the cotter pin (70).
(c) Make sure the cotter pin is fully in the slot on the nut. If the cotter pin is not in the slot on the nut, add a washer (20) under the head of the bolt (15).
(6) Put the clamp (65) on the transmitter (10).
(7) Connect the bonding jumper (60) to the clamp (65) with the screw (55), the two flat washers (50), the lock washer (45), and the nut (40).
(8) TORQUE the nut to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

.
(9) Do an electrical resistance test on the bonding jumper, as follows:
(a) Do a check of the oil pressure transmitter (10) and the clamp (65). The electrical resistance must not be more than 0.0025 ohm.
(b) Do a check of the clamp (65) and the bonding jumper (60). The electrical resistance must not be more than 0.0025 ohm.
(c) Do a check of the bonding jumper (60) and the ground stud. The electrical resistance must not be more than 0.0025 ohm.
(10) Connect the oil tubes to the transmitter (10).TORQUE the couplings to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )

.
(11) Remove the protective cover and connect the electrical connector 4003ENA to the transmitter. Tighten the connector fingertight plus one-eighth turn.

Subtask 79-33-15-865-055-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 79-33-15-942-051-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).

Subtask 79-33-15-861-051-A ** ON A/C NOT FOR ALL

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

Subtask 79-33-15-860-055-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 79-33-15-710-051-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 79-33-15-869-050-A ** ON A/C NOT FOR ALL

G. Make sure that oil pressure indication is available on the lower ECAM DU.

5. Close-up
Subtask 79-33-15-860-056-A ** ON A/C NOT FOR ALL

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

Subtask 79-33-15-862-051-A ** ON A/C NOT FOR ALL

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

Subtask 79-33-15-410-052-A ** ON A/C NOT FOR ALL

C. Close the fan cowl doors: (Ref. AMM TASK 71-13-00-410-040)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

[Rev.10 from 2021] 2026.04.01 03:38:35 UTC