Removal of the Engine 2 Hydraulic Pressure-Hose

TASK 29-13-49-000-041-A
Removal of the Engine 2 Hydraulic Pressure-Hose

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

WARNING: DO NOT TOUCH THE HYDRAULIC SYSTEM COMPONENTS FOR A SHORT TIME AFTER THE ENGINE IS SHUTDOWN. THE ENGINE COMPONENTS STAY HOT FOR SOME TIME AND CAN CAUSE INJURY.

CAUTION: DO NOT LET HYDRAULIC FLUID FALL ON THE ENGINE. UNWANTED HYDRAULIC FLUID MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FLUID CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	COVER - BLANKING
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
447AL

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
Hydraulic Suction Hose/Tube Assembly (PRE SB RA32029-7 and PRE SB RA32029-10)
Engine 2 Hydraulic Tubes

3. Job Set-up
Subtask 29-13-49-860-065-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-10-00-864-002)
(2) Depressurize the Yellow hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).
(3) Put WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic system:

on the ground service panel 198CB.

(4) Put WARNING NOTICE(S) on the access door 195BB to tell persons not to pressurize the Yellow hydraulic reservoir.

Subtask 29-13-49-941-058-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:

put 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) Put WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic system:

in the cockpit, on the HYD section of the overhead panel 40VU.

(4) On the overhead maintenance panel 50VU:

make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.

(5) Put WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
(6) Put a CONTAINER 5 L (1.32 USGAL) below the connection between the pressure hose (2) and the fluid disconnect panel (4) to collect the remaining fluid.

Subtask 29-13-49-010-058-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Open the left fan-cowl door 447AL (Ref. AMM TASK 71-13-00-010-040).
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the engine.

4. Procedure
Subtask 29-13-49-020-060-A ** ON A/C NOT FOR ALL

A. Removal of the Hydraulic Pressure-Hose
(1) Put a CONTAINER 5 L (1.32 USGAL) below the hose (55) connection to the fluid disconnect panel to collect the remaining fluid.
(2) Disconnect the hose (55) from the fluid disconnect panel.
(3) Put COVER - BLANKING on the disconnected hose (55) coupling and the fluid disconnect panel.
(4) Put a CONTAINER 5 L (1.32 USGAL) below the hose (55) connection to the hydraulic pump to catch the remaining fluid.
(5) Disconnect the hose (55) from the hydraulic pump union.
(6) Put blanking covers on the disconnected hose (55) coupling and the hydraulic pump union.
(7) Put a CONTAINER 5 L (1.32 USGAL) below the low-pressure switch-tube (60) connection to the hose (55) to collect the remaining fluid.
(8) Disconnect the tube (60) from the hose (55) tee-fitting.
(9) Put blanking covers on the disconnected tube (60) coupling and the hose (55) tee-fitting.
(10) Remove the nut (10), the washer (15), the bolt (20), and the clamp band (25) from the center mount-clamp.
(11) Disconnect the hose (55) from the center mount-clamp insert (30).

CAUTION: BE CAREFUL WHEN YOU REMOVE THE CLAMP. MAKE SURE THAT THE TWO HALF-CUSHIONS STAY ON EACH CLAMP.

(12) Remove the screw (35) and the clamp (65) that attaches the hose (55) to the filter support-bracket.
(13) Remove the nut (45), the washer (50), the screw (35) and the clamp (65).
These items attach the hose (55) to the upper support-bracket.
(14) Remove the nuts (45), the washers (50), the screws (35), and the clamps (65). These items attach the hose (55) to the upper and the lower mid support-brackets.
(15) Remove the hose (55).

[Rev.10 from 2021] 2026.04.01 00:22:03 UTC