Installation of the Engine 1 Hydraulic Pressure-Hose

TASK 29-11-49-400-041-A
Installation of the Engine 1 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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )
No specific	Torque wrench: range to between 35 and 30 lbf.in (0.40 and 0.34 m.daN )
No specific	Torque wrench: range to between 245 and 215 lbf.in (2.77 and 2.43 m.daN )
No specific	Torque wrench: range to between 1000 and 900 lbf.in (11.30 and 10.17 m.daN )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB
FOR [1000EM1] (ENGINE-1)
437AL

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-11-00-710-001-A	Operational Test of the Green Hydraulic System
TASK 29-11-51-860-040-A	Hydraulic Maintenance Procedure after an Engine Installation (with Engine Pump Installed) or after an Engine Pump Installation
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
Hydraulic Pressure Hose/Tube Assembly (PRE SB RA32029-7 and PRE SB RA32029-10)
Hydraulic Pressure Hose/Tube Assembly (PRE SB RA32029-10)
Hydraulic Pressure Hose/Tube Assembly
Hydraulic Pressure Hose/Tube Assembly (POST SB RA32029-7 and POST SB RA32029-10)
FOR [1000EM1] (ENGINE-1)
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

3. Job Set-up
Subtask 29-11-49-860-064-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the Green hydraulic system is depressurized and put it in the maintenance configuration (Ref. AMM TASK 29-10-00-864-001).
(2) Make sure that the Green 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 Green hydraulic system:

on the ground service panel 197CB.

(4) Make sure that the WARNING NOTICE(S) is (are) in position on the access door 195BB to tell persons not to pressurize the Green hydraulic reservoir.

Subtask 29-11-49-941-075-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 Green 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 suction-hose adapter connection to the hydraulic pump.

Subtask 29-11-49-010-075-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the left fan-cowl door is open:
(a) FOR [1000EM1] (ENGINE-1)
make sure that the door 437AL is open (Ref. AMM TASK 71-13-00-010-040).
(2) Make sure that an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the engine.

4. Procedure
Subtask 29-11-49-420-058-A ** ON A/C NOT FOR ALL

A. Installation of the Hydraulic Pressure Hose/Tube Assembly
(1) Remove the protective covers from the tee fitting, the ends of the pressure hose/tube (15), the fluid disconnect panel, and the union in the hydraulic pump.
(2) Connect the pressure hose/tube (15) to the fluid disconnect panel and the union on the hydraulic pump.
(3) TORQUE the coupling nuts on the two ends of the pressure hose/tube (15) to between 1000 and 900 lbf.in (11.30 and 10.17 m.daN )

.
(4) Put the clamps (10) on the pressure hose/tube (15). Attach the clamps to the three engine brackets with the screws (5) and the washers (50). Do not torque the screws at this time.
(5) Loosely connect the pressure switch tube (45) to the tee fitting on the pressure hose/tube (15). Do not torque the coupling nut at this time.
(6) Put the clamp (10) on the pressure hose/tube (15). Attach the clamp to the filter support bracket with the screw (5). Do not torque the bolt at this time.
(7) Connect the low pressure switch tube (45) to the tee fitting on the pressure hose (15).
(8) TORQUE the coupling nut on the pressure switch tube (45) to between 245 and 215 lbf.in (2.77 and 2.43 m.daN )

NOTE: Use a second wrench to hold the fittings when you torque the coupling nuts.

(9) Make sure that the pressure hose/tube (15) is in the correct position on the engine.
(10) Torque the screw on the support bracket.

CAUTION: YOU MUST TORQUE THE BOLTS IN THE SEQUENCE GIVEN. IF YOU DO NOT TORQUE THE BOLTS IN SEQUENCE, YOU CAN DAMAGE THE PRESSURE HOSE/ TUBE.

(a) TORQUE the screw (5) on the lower mid support bracket to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

.
(b) TORQUE the screw (5) on the upper mid support bracket to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

.
(c) TORQUE the screw (5) on the filter support bracket to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

.
(d) TORQUE the screw (5) on the upper support bracket to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

Subtask 29-11-49-420-068-A ** ON A/C NOT FOR ALL

B. Installation of the Center-Mount Clamp

PRE SB RA32029-7
(1) Remove the bolt (30), the washer (35), and the nut (40) from the band (20) on the center-mount clamp.
(2) Open the band (20) on the clamp and put the pressure hose/tube (15) into its hole in the insert (25).
(3) Put the band (20) on the insert (25) and install the bolt (30), the washer (35), and the nut (40).
(4) Make sure that the center-mount clamp is installed a distance of 15.0 in. (0.3810 m) below the clamp on the suction hose/tube.

Hydraulic Pressure Hose/Tube Assembly (PRE SB RA32029-7 and PRE SB RA32029-10) ** ON A/C NOT FOR ALL

NOTE: Measure the distance from the top of the clamp to the centerline of the center-mount clamp.

(5) TORQUE the nut (40) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

Subtask 29-11-49-420-069-A ** ON A/C NOT FOR ALL

C. Installation of the Center-Mount Clamp

POST SB RA32029-7

PRE SB RA32029-10

(1) Remove the bolt (30), the washer (35), and the nut (40) from the band (20) on the center-mount clamp.
(2) Open the band (20) on the clamp and put the pressure hose/tube (15) into its hole in the insert (25).
(3) Put the band (20) on the insert (25) and install the bolt (30), the washer (35), and the nut (40).
(4) Make sure that the center-mount clamp is installed a distance of 14.0 in. (0.3556 m) below the clamp on the suction hose/tube.

Hydraulic Pressure Hose/Tube Assembly (PRE SB RA32029-10) ** ON A/C NOT FOR ALL

NOTE: Measure the distance from the top of the clamp to the centerline of the center-mount clamp.

(5) Turn the center-mount clamp to keep a minimum clearance of 0.6 in. (15.2400 mm) to 0.8 in. (20.3200 mm) between the center mount clamp and the oil module. (see detail B).

Hydraulic Pressure Hose/Tube Assembly (PRE SB RA32029-10) ** ON A/C NOT FOR ALL

NOTE: It is necessary to turn the center-mount clamp to prevent the hoses from rubbing on the engine lube oil module.

(6) TORQUE the nut (40) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

.

END OF POST SB RA32029-7

END OF PRE SB RA32029-10

Subtask 29-11-49-420-134-A ** ON A/C NOT FOR ALL

D. Installation of the P-Clamps

Hydraulic Pressure Hose/Tube Assembly (POST SB RA32029-7 and POST SB RA32029-10) ** ON A/C NOT FOR ALL

POST SB RA32029-10

(1) Install the P-clamps (55), (60) and (65) on the pressure hose/tube (15), the lower case drain hose and suction hose/tube.
(2) Make sure that the P-clamps are installed 16.0 in. (0.4064 m) down from the top of the next higher clamp.

NOTE: Make sure there is a 0.5 in. (12.7 mm) gap between the hose and the oil filter module.

(3) Install the bolt (70), washer (75) and nut (80).
(4) TORQUE the nut (80) to between 35 and 30 lbf.in (0.40 and 0.34 m.daN )

.
(5) Do a play check to make sure that there is sufficient clearance between the fan cowl and the hydraulic lines. If there is not sufficient clearance, adjust the hydraulic lines as required.

END OF POST SB RA32029-10

Subtask 29-11-49-710-054-A ** ON A/C NOT FOR ALL

E. Operational test
(1) Do an operational test of the Green hydraulic system (Ref. AMM TASK 29-11-00-710-001)
(2) During the dry motoring, make sure that there are no leaks from the connections.
(3) Make sure that the level of the hydraulic fluid in the Green reservoir is correct. If necessary, fill the reservoir (Ref. AMM TASK 12-12-29-611-001).

Subtask 29-11-49-860-131-A ** ON A/C NOT FOR ALL

F. Do the hydraulic maintenance procedure (Ref. AMM TASK 29-11-51-860-040).

5. Close-up
Subtask 29-11-49-860-086-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Remove the access platform(s).
(2) Make sure that the work area is clean and clear of tools and other items.

Subtask 29-11-49-410-054-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Close the left fan-cowl door:
(a) FOR [1000EM1] (ENGINE-1)
Close the door 437AL (Ref. AMM TASK 71-13-00-410-040).
(2) Close the door 195BB.

Subtask 29-11-49-942-056-A ** ON A/C NOT FOR ALL

C. Remove the safety precautions
(1) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 00:16:45 UTC