Removal of the Overpressure Valve

TASK 53-39-41-000-001-A
Removal of the Overpressure Valve

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.

ZONE: 191
ZONE: 192

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

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
191	AIR CONDITIONING COMPT AND FAIRINGS
192	AIR CONDITIONING COMPT AND FAIRINGS
191EB, 191LB, 192EB, 192LB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 53-35-11-000-001-A	Removal of the Wing-to-Fuselage Fairings
TASK 53-35-13-000-002-A	Removal of the Quick-Release Access Panels from the Belly Fairing Structure
Overpressure Valve

3. Job Set-up
Subtask 53-39-41-010-050-A

A. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position in zone 191 and 192.

Subtask 53-39-41-010-051-A

B. Removal of the Access Panels
(1) Remove the quick-release access panels from the belly fairing structure (Ref. AMM TASK 53-35-13-000-002):

191EB, 192EB.

(2) Remove the wing-to-fuselage fairing panels (Ref. AMM TASK 53-35-11-000-001):

191LB, 192LB.

4. Procedure
Subtask 53-39-41-020-052-A

A. Removal of the Component

Overpressure Valve

(1) Compress the spring (8) to remove the nuts (1) and shutter assembly (2) easily.
(2) Remove the nut (1).
(3) Remove the shutter assembly (2).
(4) Remove the nuts (3), the bolts (4) and the spacers (5).
(5) Remove the tripod assembly (6).

[Rev.10 from 2021] 2026.04.02 06:29:13 UTC