Removal of the P2T2 Probe Tube Assembly [IAE]

TASK 73-22-48-000-010-A
Removal of the P2T2 Probe Tube Assembly

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.

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	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	COVER - BLANKING
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
P2T2 Probe Tube and Hose Assemblies

3. Job Set-up
Subtask 73-22-48-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 73-22-48-010-052-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowls: (Ref. AMM TASK 71-13-00-010-010)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position on the right side of the engine.

4. Procedure
Subtask 73-22-48-020-050-A ** ON A/C NOT FOR ALL

A. Remove the P2T2 Probe Tube and Hose Assemblies:
(1) Remove the P2T2 probe access panel.
(a) Remove the 18 bolts (3) from the access panel (2).
(b) Remove the access panel from the air intake cowl.
(2) Remove the P2T2 hose assembly.
(a) Cut and discard the wire from the elbow connector of the P2T2 hose assembly (1) and the instrument air-tube (10).
(b) Hold the instrument air-tube (10) with an applicable wrench and disconnect the P2T2 hose assembly (1).
(c) Hold the union (9) with an applicable wrench and disconnect the P2T2 hose assembly (1).
(d) Remove the P2T2 hose assembly.
(3) Remove the P2T2 tube assembly.
(a) Hold the union (4) with an applicable wrench and disconnect the P2T2 tube assembly (7).
(b) Hold the union (9) with an applicable wrench and disconnect the P2T2 tube assembly (7).

NOTE: Write the position of the union (9). It must be put in the same position during the installation task.

(c) Remove the P2T2 tube assembly (7) from the air intake cowl.
(d) Remove the nut (8) from the union (9).
(e) Remove the union (9) from the rear bulkhead.

Subtask 73-22-48-620-050-A ** ON A/C NOT FOR ALL

B. Put the applicable COVER - BLANKING on all the openings.

[Rev.10 from 2021] 2026.04.01 13:06:11 UTC