(2)
Make sure that the warning notices are in position to tell persons not to pressurize the Yellow hydraulic system:
-in the cockpit on the hydraulic section 40VU of the overhead panel, - on the ground service panel of the Yellow hydraulic system.
(3)
Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
(4)
Make sure that the reservoir of the Yellow hydraulic system is depressurized (Ref. TASK 29-14-00-614-001).
(5)
Make sure that the access panel 196BB and the access door 198CB are open.
(6)
Make sure that the container is in position below the HP manifold.
(7)
Make sure that the isolation coupling of the Power Transfer Unit (PTU) is disconnected (Ref. TASK 29-23-00-860-001).
Subtask 29-24-21-865-051
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU HYDRAULIC/HYD POWER/Y 3803GX N30 123VU Y HYD/ELEC/PUMP 3802GX AB06 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03
4. Procedure
_________
(Ref. Fig. 401/TASK 29-24-21-991-001) Subtask 29-24-21-210-050
A. Visual Inspection
(1)
Do a visual inspection of the check valve (3) for damage and missing parts.
(2)
If parts are missing, do the subsequent before you install the new check valve:
-Examine the Yellow HP filter (3048GM) (Ref. TASK 29-13-45-610-001) and the Yellow HP manifold (Ref. TASK 29-13-14-000-001) and (Ref. TASK 29-13-14-400-001), to find these parts.
Subtask 29-24-21-420-050
B. Installation of the Yellow E-Pump Check Valve (3083GM)
(1)
Clean the component interface and/or the adjacent area.
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Apply HYDRAULIC FLUIDS (Material No. 02-003) to:
-
the threads of the check valve (3),
-
the new packing (4).
(4)
Install the new packing (4) on the check valve (3).
(5)
Remove the blanking plugs from the T-fitting (5) and the pipe end-fitting (2).
(6)
Install the check valve (3) in the T-fitting (5).
(7)
TORQUE the check valve (3) to between 3.47 and 3.58 m.daN (25.58 and
26.40 lbf.ft).
(8)
Connect the pipe end-fitting (2) with the check valve (3).
(9)
TORQUE the pipe end-fitting (2) to between 2.9 and 3.2 m.daN (21.38 and 23.59 lbf.ft).
Subtask 29-24-21-865-052
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 3801GX, 3802GX, 3803GX.
Subtask 29-24-21-710-050
D. Test of the Yellow E-Pump Check Valve (3083GM)
(1)
Do the operational test of the Yellow hydraulic system (Ref. TASK 29-13-00-710-002).
(2)
Do the operational test of the Yellow E-pump (Ref. TASK 29-24-00-710-001).
(3)
Make sure that there is no hydraulic leakage from the check valve (3) connections.
5. Close-up
________ Subtask 29-24-21-860-052
A. Put the aircraft back to the serviceable condition.
(1)
Connect the isolation coupling of the power transfer unit (PTU) (Ref. TASK 29-23-00-860-002).
(2)
Remove the container.
(3)
Remove the warning notices from the cockpit and the ground service panel.
(4)
Make sure that the work area is clean and clear of tool(s) and other
items.
(5)
Close the access panel 196BB.
(6)
Close the access door 198CB.
PUMP - ELECTRIC (3075GX) - REMOVAL/INSTALLATION
_______________________________________________
TASK 29-24-51-000-001
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