Removal of the Hydraulic Line Upper, Double and Lower Brackets [CFMI]

TASK 78-31-49-000-018-A
Removal of the Hydraulic Line Upper, Double and Lower Brackets

WARNING: WEAR A FACE SHIELD WHICH IS RESISTANT TO HIGH PRESSURE JETS WHEN YOU WORK ON PRESSURIZED SYSTEMS.

WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:

FLUSH IT AWAY WITH CLEAN WATER
GET MEDICAL AID.

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:

ONE WRENCH TO HOLD THE UNION, AND
ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.

THIS PREVENTS DAMAGE TO THE PARTS.

CAUTION: MAKE SURE THERE IS NO UNWANTED MATERIAL IN THE PORTS AND ORIFICES OR DAMAGE CAN OCCUR.

CAUTION: YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS LUBRICANT.

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 1M(3 FT)
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	WARNING NOTICE(S)
HIX3005	1	SAFETY SLEEVE - PIVOTING DOOR ACTUATOR

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 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-32-41-480-040-A	Installation of the Safety Sleeve on Blocker Door Actuator
TASK 78-32-41-860-040-A	Manual Deployment of the Blocker Door
Forward Frame of the Half Door
Forward Frame of the Half Door
Forward Frame of the Half Door
Hydraulic Line Brackets
Hydraulic Line Brackets

3. Job Set-up
Subtask 78-31-49-941-065-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 78-31-49-010-070-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.

Subtask 78-31-49-040-092-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 78-31-49-860-052-A ** ON A/C NOT FOR ALL

D. Bring the blocker door to deploy position manually (Ref. AMM TASK 78-32-41-860-040)

Subtask 78-31-49-480-051-A ** ON A/C NOT FOR ALL

E. Install the HIX3005 SAFETY SLEEVE - PIVOTING DOOR ACTUATOR on the blocker door actuator (Ref. AMM TASK 78-32-41-480-040)

4. Procedure
Subtask 78-31-49-020-063-A ** ON A/C NOT FOR ALL

A. Remove the Hydraulic Line Upper, Double and Lower Brackets.
(1) Remove the hydraulic line upper bracket as follows:
(2) Put a CONTAINER 5 L (1.32 USGAL).
(3) Remove the nuts and bolts.
(4) Remove the flange and the upper half clamp.
(5) Only for the right side remove the clamp, bolt and nut wich attach the electrical harness on the upper bracket.
(6) Remove the bolts and nuts which attach the upper bracket on the forward frame.
(7) Remove the upper bracket.
(8) Remove the hydraulic line double bracket as follows:
(a) Remove the nut and bolts.
(b) Remove the double flange and the upper half clamps.
(c) Remove the bolt, nut and clamp from the double bracket.
(d) Remove bolts and nuts which attach the bracket on the forward frame.
(e) Remove the double bracket.
(9) Remove the hydraulic line lower bracket as follows:
(a) Remove bolt and washer.
(b) Remove the upper half clamp.
(c) Remove the bolts and nuts wich attach the bracket on the forward frame.
(d) Remove the lower bracket.
(e) Remove the container.

[Rev.10 from 2021] 2026.04.02 07:42:00 UTC