Installation of the Hydraulic Pressure Tubes

TASK 29-13-49-400-011-A
Installation of the Hydraulic Pressure Tubes

WARNING: DO NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. HYDRAULIC FLUID IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY. FLUSH HYDRAULIC FLUID FROM YOUR EYES, MOUTH OR SKIN WITH WATER. GET MEDICAL AID IF YOU GET HYDRAULIC FLUID IN YOUR EYES OR MOUTH.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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	1	CONTAINER 5 L (1.32 USGAL)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )
No specific	Torque wrench: range to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )
No specific	Torque wrench: range to between 600 and 500 lbf.in (6.78 and 5.65 m.daN )
No specific	Torque wrench: range to between 840 and 752 lbf.in (9.49 and 8.50 m.daN )
No specific	Torque wrench: range to between 945 and 855 lbf.in (10.68 and 9.66 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-002)	cleaning fluid
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 29-10-00-863-002-A	Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-13-00-710-002-A	Operational Test of the Yellow Hydraulic System
TASK 29-13-49-000-011-A	Removal of the Hydraulic Pressure Tubes
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 70-23-11-911-013-A	General Torque Tightening Techniques
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
Hydraulic Tube Details
Hydraulic Tube Details
Hydraulic Tube Details

3. Job Set-up
Subtask 29-13-49-860-054-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) Make sure that the Yellow hydraulic reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to pressurize the Yellow hydraulic system:

on the ground service panel 198CB.

(4) Make sure that the WARNING NOTICE(S) is (are) in position on the access door 195BB to tell persons not to pressurize the Yellow hydraulic reservoir.
(5) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the engine 1(2).
(6) Make sure that the fan-cowl doors 447AL/448AR are open.

Subtask 29-13-49-941-056-A ** ON A/C NOT FOR ALL

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

make sure that the WARNING NOTICE(S) is (are) in position 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) Make sure that the WARNING NOTICE(S) is (are) 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) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to energize the FADEC 1(2).
(6) Make sure that a CONTAINER 5 L (1.32 USGAL) is below the hydraulic tube connection to the switch (25) to collect the remaining fluid.

4. Procedure

NOTE: It is permitted to hand tighten the tube and hose connections to make installation easier. Once all the tubes/hoses are installed, torque tighten the connections to the correct values.

Subtask 29-13-49-110-052-A ** ON A/C NOT FOR ALL

A. Preparation for Installation
(1) Remove the applicable covers/caps/plugs from the openings.
(2) Clean the replacement parts and their interfaces
(a) Use a clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with cleaning fluid (Material No.V01-002) and clean the replacement parts and their interfaces.
(b) Use a clean, dry Textile-Lint free Cotton - (Material No.14SBA1) and remove the dirty cleaning fluid from the parts while they are wet.
(3) Make sure that the replacement parts and their interfaces have no damage.
(4) Lightly lubricate the threads and abutment faces of the hydraulic system tube/hose nuts, unions and couplings with the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) used in the aircraft hydraulic system.

Subtask 29-13-49-420-051-A ** ON A/C NOT FOR ALL

B. Install the hydraulic pressure tubes

PRE SBN 29-0001
(1) Make sure that these parts are installed in the position they were removed from (Ref. AMM TASK 29-13-49-000-011):
(a) The clamps (14), (17), (37) and (39).
(b) The bolts (13), (16), (36) and (40).
(c) The hoses (4), (6) and (7) and the tube (11).
(2) Install the tube (11).
(a) Put the tube on the engine, in the correct position for installation.
(b) Attach the connector nut of the tube to the union (32). Tighten the connector nut with your hand.
(c) Hold the union (32) with an applicable wrench.
(d) TORQUE the bulkhead union nut of the union (32) to between 600 and 500 lbf.in (6.78 and 5.65 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(e) Loosely assemble the two halves of the clamp (39) and the three bolts (40) to the raft (38).
(f) Remove the safety ties from the clamp (39) and the raft (38).
(g) Loosely assemble the two halves of the clamp (37) and the three bolts (36) to the raft (34).
(h) Remove the safety ties from the clamp (37) and the raft (34).
(i) Hold the union (32) with an applicable wrench.
(j) TORQUE the connector nut of the tube (11) to between 945 and 855 lbf.in (10.68 and 9.66 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(k) TORQUE the bolts (36) and (40) to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(3) Install the hose (6)
(a) Connect the hose to the tube (11) and the union (35).
(b) Hold the union (35) with an applicable wrench.
(c) TORQUE the end connector of the hose (6) to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(d) Hold the tube (11) and TORQUE the end connector of the hose (6) to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(4) Install the lower hose (7)

PRE SBN 29-0265
(a) Connect the hose to the tube (11) and the union (57).
(b) Hold the end of the tube (11) with an applicable wrench.
(c) TORQUE the connector nut of the hose (7) to between 945 and 855 lbf.in (10.68 and 9.66 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(d) Hold the union (57) with an applicable wrench.
(e) TORQUE the connector nut of the hose (7) to between 945 and 855 lbf.in (10.68 and 9.66 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

END OF PRE SBN 29-0265

POST SBN 29-0265
(f) Connect the hose to the tube (11) and the dampener (58).
(g) Hold the end of the tube (11) with an applicable wrench.
(h) TORQUE the connector nut of the hose (7) to between 945 and 855 lbf.in (10.68 and 9.66 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(i) Hold the dampener (58) with an applicable wrench.
(j) TORQUE the connector nut of the hose (7) to between 840 and 752 lbf.in (9.49 and 8.50 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

END OF POST SBN 29-0265

(5) Install the upper hose (4)
(a) Put the upper hose in the clamp (14) and (17) in the correct position for installation.
(b) Connect the upper hose (4) to the union (32).
(c) Hold the union (32) with an applicable wrench.
(d) TORQUE the connector nut of the upper hose (4) to between 945 and 855 lbf.in (10.68 and 9.66 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(e) Connect the upper hose (4) at the aircraft pylon interface.
(f) TORQUE the connector nut of the upper hose (4) to between 945 and 855 lbf.in (10.68 and 9.66 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(g) Install the bolt (13) to the clamp (14).
(h) TORQUE the bolt (13) to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(i) Install the bolt (16) to the clamp (17).
(j) TORQUE the bolt (16) to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

Subtask 29-13-49-420-053-A ** ON A/C NOT FOR ALL

C. Install the hydraulic pressure tubes

SBN 29-0001 : Hydraulic hose changed and raft extension added at the LP switch.
(1) Make sure that these parts are installed in the position they were removed from (Ref. AMM TASK 29-13-49-000-011):
(a) The clamps (14), (17), (37) and (39).
(b) The bolts (13), (16), (36) and (40).
(c) The hoses (4), (19) and (7) and the tube (11).
(2) Install the tube (11).
(a) Put the tube on the engine, in the correct position for installation.
(b) Attach the connector nut of the tube to the union (32). Tighten the connector nut with your hand.
(c) Hold the union (32) with an applicable wrench.
(d) TORQUE the bulkhead union nut of the union (32) to between 600 and 500 lbf.in (6.78 and 5.65 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(e) Loosely assemble the two halves of the clamp (39) and the three bolts (40) to the raft (41).
(f) Remove the safety ties from the clamp (39) and the raft (41).
(g) Loosely assemble the two halves of the clamp (37) and the three bolts (36) to the raft (41).
(h) Remove the safety ties from the clamp (37) and the raft (41).
(i) Hold the union (32) with an applicable wrench.
(j) TORQUE the connector nut of the tube (11) to between 945 and 855 lbf.in (10.68 and 9.66 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(k) TORQUE the bolts (36) and (40) to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(3) Install the hose (19).
(a) Connect the hose to the tube (11) and the union (42).
(b) Hold the union (42) with an applicable wrench.
(c) TORQUE the end connector of the hose (19) to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(d) Hold the tube (11) and TORQUE the end connector of the hose (19) to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

PRE SBN 29-0265
(4) Install the lower hose (7)
(a) Connect the hose to the tube (11) and the union (57).
(b) Hold the end of the tube (11) with an applicable wrench.
(c) TORQUE the connector nut of the hose (7) to between 945 and 855 lbf.in (10.68 and 9.66 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(d) Hold the union (57) with an applicable wrench.
(e) TORQUE the connector nut of the hose (7) to between 945 and 855 lbf.in (10.68 and 9.66 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(i) Hold the dampener (58) with an applicable wrench.
(j) TORQUE the connector nut of the hose (7) to between 840 and 752 lbf.in (9.49 and 8.50 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

END OF POST SBN 29-0265
(5) Install the upper hose (4)
(a) Put the hose into the clamp (14) and (17) in the correct position for installation.
(b) Connect the hose (4) to the union (32).
(c) Hold the union (32) with an applicable wrench.
(d) TORQUE the connector nut of the hose (4) to between 945 and 855 lbf.in (10.68 and 9.66 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(g) Install the bolt (13) to the clamp (14).
(h) TORQUE the bolt (13) to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(i) Install the bolt (16) to the clamp (17).
(j) TORQUE the bolt (16) to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(6) Remove the container.

Subtask 29-13-49-710-051-A ** ON A/C NOT FOR ALL

D. Operational Test
(1) Pressurize the hydraulic system of the engine 2 (Ref. AMM TASK 29-10-00-863-002).
(2) Do an operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002).
(3) During the dry motoring, make sure that there are no leaks on the hydraulic system of the engine 2 .

5. Close-up
Subtask 29-13-49-410-053-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Remove the WARNING NOTICE(S).
(2) Remove the access platform(s).
(3) Make sure that the work area is clean and clear of tools and other items.
(4) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM2] (ENGINE-2)
close the door 447AL 448AR.
(5) Close the door 195BB.

[Rev.10 from 2021] 2026.04.01 00:22:55 UTC