Subtask 29-13-49-865-060
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU HYDRAULIC/Y HYD/PUMP ENG2/MONG 3700GD Q37
4. Procedure
_________
(Ref. Fig. 407/TASK 29-13-49-991-910) Subtask 29-13-49-420-058
A. Installation of the Hydraulic Low-Pressure Switch Tube
(1) Remove the protective covers from the hydraulic low-pressure switch tube (15), the fitting on the pressure hose/tube and the hydraulic low-pressure switch.
(2) Loosely connect the low-pressure switch tube (15) to the pressure hose/tube.
(3) Loosely connect the low-pressure switch tube (15) to the hydraulic low-pressure switch.
(4) Install the clamp (20) on the low-pessure switch tube (15). Attach the two tubes to the channel with the bolt (5), the washer (10) and the clamps (20).
(5) Make sure that the low-pressure switch tube (15) is in the correct position on the engine.
NOTE : Use a second wrench to hold the fittings when you TORQUE the____ coupling nuts. This prevents damage to the tube assemblies.
R R (6) TORQUE the coupling nut on the low-pressure switch (15) to between 7 and 7.68 m.daN (51.62 and 56.63 lbf.ft).
R R (7) TORQUE the coupling nut on the pressure hose/tube to between 2.42 and 2.76 m.daN (17.84 and 20.35 lbf.ft)
R (8) TORQUE the bolt (5) to between 0.23 and 0.28 m.daN (20.35 and 24.77 lbf.in).
Subtask 29-13-49-710-063
B. Operational Test
(1) Pressurize the Yellow hydraulic reservoir (Ref. TASK 29-14-00-614-002).
(2) Do an operational test of the Yellow hydraulic system (Ref. TASK 29-13-00-710-002).
(3) During the dry motoring of the engine 2, make sure that there are no leaks from the hydraulic low-pressure switch tube.
(4) Make sure that the level of the hydraulic fluid in the Yellow reservoir is correct. If necessary, fill the reservoir (Ref. TASK 12-12-29-611-001) or (Ref. TASK 12-12-29-611-002).
5. Close-up
________
Subtask 29-13-49-410-066
A. Close Access
(1)
Remove the container.
(2)
Remove the warning notice(s).
(3)
Remove the access platform(s).
(4)
Make sure that the work area is clean and clear of tool(s) and other items.
R (5) Close the left fan-cowl door (Ref. TASK 71-13-00-410-040): FOR 1000EM2 close the door 447AL.
(6) Close the door 195BB.
TASK 29-13-49-000-006
Removal of the Pressure Relief Valve Hose/Tube
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 circuit breaker(s) safety clip(s)
No specific protective covers
No specific warning notice(s)
No specific wrench
No specific access platform 1.50 m (4 ft. 11 in.)
No specific container 5 l (1.3208 USgal)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-00-00-864-001 Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs
R 71-13-00-010-040 Opening of the Fan Cowl Doors 29-13-49-991-911 Fig. 408 29-13-49-991-912 Fig. 409
3. Job Set-up
__________ Subtask 29-13-49-860-079
A. Aircraft Maintenance Configuration
(1)
Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001)
(2)
Depressurize the Yellow hydraulic reservoir (Ref. TASK 29-14-00-614-001).
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