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REFERENCE DESIGNATION
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29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through the Ground Connector
29-23-00-860-001 Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
29-23-00-860-002 Connection of the Isolation Coupling of the Power Transfer Unit (PTU)
29-13-21-991-001 Fig. 401
3. Job Set-up__________
Subtask 29-13-21-860-053
A. Aircraft Maintenance Configuration
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
(1)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(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 door 196BB is open.
(6)
Make sure that the isolation coupling of the Power Transfer Unit (PTU) is disconnected (Ref. TASK 29-23-00-860-001).
Subtask 29-13-21-865-051
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST 1881GP N35 121VU HYDRAULIC/HYD POWER/Y 3803GX N30 123VU Y HYD/ELEC/PUMP 3802GX AB06
R 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03
4. Procedure
_________
(Ref. Fig. 401/TASK 29-13-21-991-001)
Subtask 29-13-21-420-050
A. Installation of the Pressure Gage
(1)
Clean the component interface and/or the adjacent area.
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Remove the blanking plugs from the pressure gage (2) and the adapter (4).
(4)
Apply HYDRAULIC FLUIDS (Material No. 02-003) to the threads of the pressure gage connection.
(5)
Install the pressure gage (2) on the adapter (4). NOTE : Make sure that you can clearly read the pressure gage when it
____
is installed.
(6)
TORQUE the nut (3) to between 1.54 and 1.65 m.daN (11.35 and 12.16 lbf.ft).
(7)
Safety the nut (3) with lockwire 0.8 mm (0.032 in.).
Subtask 29-13-21-860-054
B. Preparation for the Test
(1)
Fill the accumulator with nitrogen (Ref. TASK 12-14-29-614-001).
(2)
Remove the warning notice(s).
(3)
Pressurize the reservoir of the Yellow hydraulic system (Ref. TASK 29-14-00-614-002).
(4)
Make sure that the fluid level in the reservoir of the Yellow hydraulic system is correct. Add fluid as necessary (Ref. TASK 12-12-29-611-001).
(5)
Pressurize the Yellow hydraulic system (Ref. TASK 29-10-00-863-002). Subtask 29-13-21-790-050
C.
Test
(1)
Apply SPECIAL MATERIALS (Material No. 05-004) to the connection of the pressure gage (2) and the adapter (4) and make sure that there are no leaks.
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