Installation of the Bleed-Air Precooler-Exchanger Cold-Inlet

TASK 36-11-44-400-803-A
Installation of the Bleed-Air Precooler-Exchanger Cold-Inlet

WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.

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: YOU MUST NOT TOUCH HOT PARTS WITHOUT APPLICABLE GLOVES. HOT PARTS CAN CAUSE AN INJURY.

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

CAUTION: BE VERY CAREFUL WHEN YOU DO WORK ON OR NEAR THE AIR-CONDITIONING DUCTS. THE DUCTS ARE MADE OF THIN MATERIAL AND YOU CAN EASILY BREAK THEM.

ZONE: 410
ZONE: 420

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
410	ENG 1 PYLON BOX AND FORWARD FAIRING
420	ENG 2 PYLON BOX AND FORWARD FAIRING

B. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	SEAL	AIPC 36-11-86-50-400
1	BLEED-AIR PRECOOLER-EXCHANGER COLD-INLET	AIPC 36-11-86-50-410
2	SEAL	AIPC 36-11-86-51-390
1	DIFFUSER	AIPC 36-11-86-51-400

C. Referenced Information

REFERENCE	DESIGNATION
TASK 36-11-42-000-804-A	Removal of the Bleed-Air Precooler Exchanger
TASK 36-11-42-400-804-A	Installation of the Bleed-Air Precooler Exchanger
Bleed-Air Precooler-Exchanger Cold-Inlet

3. Job Set-up
Subtask 36-11-44-020-055-A

A. Removal of the Component
(1) Make sure that the bleed-air precooler exchanger is removed (Ref. AMM TASK 36-11-42-000-804).

4. Procedure
Subtask 36-11-44-420-052-A

A. Installation of the Bleed-Air Precooler-Exchanger Cold-Inlet
(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Do a visual inspection of the seals (2) and (4) of the bleed-air precooler-exchanger cold-inlet (1):

If the seal (2) is damaged, discard and replace it with a new AIPC 36-11-86-50-400 SEAL (2) or AIPC 36-11-86-51-390 SEAL (2).
If the seal (4) is damaged, discard and replace the bleed-air precooler-exchanger cold-inlet (1) with a new AIPC 36-11-86-50-410 BLEED-AIR PRECOOLER-EXCHANGER COLD-INLET (1) or AIPC 36-11-86-51-400 DIFFUSER (1).

NOTE: The seal (4) is part of the bleed-air precooler-exchanger cold-inlet (1).

(3) Make sure that the seal (4) is installed correctly in the bleed-air precooler-exchanger cold-inlet (1).
(4) Install the seal (2) on the structure (3).
(5) Put the bleed-air precooler-exchanger cold-inlet (1) in position on the fan air valve (5) through the structure (3).
(6) Make sure that there is no clearance between the bleed-air precooler-exchanger cold-inlet (1) and the seal (2).

Subtask 36-11-44-420-053-A

B. Installation of the Component
(1) Install the bleed-air precooler exchanger (Ref. AMM TASK 36-11-42-400-804).

[Rev.10 from 2021] 2026.04.01 01:09:35 UTC