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

TASK 78-31-49-400-018-A
Installation 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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 30 and 27 lbf.in (0.34 and 0.31 m.daN )
No specific	Torque wrench: range to between 40 and 30 lbf.in (0.45 and 0.34 m.daN )
No specific	Torque wrench: range to between 70 and 61 lbf.in (0.79 and 0.69 m.daN )
HIX3005	1	SAFETY SLEEVE - PIVOTING DOOR ACTUATOR

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2245)	finish paint EA4 blue 5991
(Material No.CP2318)	blindexite RT 342-2

C. Work Zones and Access Panels

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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-32-41-080-040-A	Removal of the Safety Sleeve from Blocker Door Actuator
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
TASK 78-32-41-860-041-A	Manual Stowing 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 78-31-49-860-072-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

Subtask 78-31-49-010-100-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 78-31-49-040-093-A ** ON A/C NOT FOR ALL

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

Subtask 78-31-49-860-080-A ** ON A/C NOT FOR ALL

D. Make sure that the blocker door is in deployed position (Ref. AMM TASK 78-32-41-860-040)

Subtask 78-31-49-480-053-A ** ON A/C NOT FOR ALL

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

4. Procedure
Subtask 78-31-49-420-063-A ** ON A/C NOT FOR ALL

A. Install the Hydraulic Line Upper, Double and Lower Brackets.

NOTE: You should apply a witness line of finish paint EA4 blue 5991 (Material No.CP2245) all nuts and connections when you have checked their torques.

(1) Apply a layer of blindexite RT 342-2 (Material No.CP2318) bracket surfaces in contact with the forward frame.
(2) Install the hydraulic line lower bracket as follows:
(a) Install lower bracket on forward frame.
(b) Install bolts and nuts.
(c) TORQUE nut to between 70 and 61 lbf.in (0.79 and 0.69 m.daN )

.
(d) Install the upper half clamp, washer and bolt.
(e) TORQUE bolt to between 30 and 27 lbf.in (0.34 and 0.31 m.daN )

.
(3) Install the hydraulic line double bracket as follows:
(a) Install the double bracket on forward frame.
(b) Install bolts and nuts.
(c) TORQUE nut to between 70 and 61 lbf.in (0.79 and 0.69 m.daN )

.
(d) Install the double flange, upper half clamps, bolts and nuts.
(e) TORQUE bolts to between 70 and 61 lbf.in (0.79 and 0.69 m.daN )

.
(f) Install the electrical harness and attach on the double bracket with clamp, bolt and nut.
(g) TORQUE nut to between 40 and 30 lbf.in (0.45 and 0.34 m.daN )

(4) Install the hydraulic line upper bracket as follows:
(a) Install the upper bracket on the forward frame.
(b) Install bolts and nuts.
(c) TORQUE nut to between 70 and 61 lbf.in (0.79 and 0.69 m.daN )

.
(d) Install the upper half clamp, flange, bolts and nuts.
(e) TORQUE nut to between 30 and 27 lbf.in (0.34 and 0.31 m.daN )

.
(f) Install the electrical harness and attach it on the upper bracket with clamp, bolt and nut.
(g) TORQUE nut to between 40 and 30 lbf.in (0.45 and 0.34 m.daN )

5. Close-up
Subtask 78-31-49-080-051-A ** ON A/C NOT FOR ALL

A. Remove the safety sleeve (HIX 3005) from the blocker door actuator (Ref. AMM TASK 78-32-41-080-040).

Subtask 78-31-49-860-053-A ** ON A/C NOT FOR ALL

B. Bring the Blocker Doors.

CAUTION: BLOCKER DOOR LATCH MUST BE OPENED WHEN YOU CLOSE THE BLOCKER DOOR OR DAMAGE CAN OCCUR.

(1) Manually bring the blocker doors to stow position (Ref. AMM TASK 78-32-41-860-041).

Subtask 78-31-49-440-072-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041)

Subtask 78-31-49-410-070-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.02 06:38:04 UTC