(3)
Make sure that the reservoir of the Green hydraulic system is depressurized. (Ref. TASK 29-14-00-614-001).
(4)
Make sure that the warning notices are in position to tell persons not to pressurize the Green hydraulic system:
-in the cockpit on the hydraulic section 40VU of the overhead panel, - on the ground service panel of the Green hydraulic system.
(5)
Make sure that the right main door of the main gear is open (Ref. TASK 32-12-00-010-001).
(6)
Make sure that the access platform is in position at the RH main door of the main gear.
(7)
Make sure that the container is in position below the connections of the manifold (1146GM) to collect unwanted fluid.
(8)
Make sure that the isolation coupling of the Power Transfer Unit (PTU) is disconnected (Ref. TASK 29-23-00-860-001).
Subtask 29-19-41-865-051
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/G HYD/PUMP ENG1/CTL 1701GK R35 121VU HYDRAULIC/G HYD/PUMP ENG1/MONG 1702GK R34
4. Procedure
_________
(Ref. Fig. 401/TASK 29-19-41-991-001) R
Subtask 29-19-41-910-050
R A. Preparation for Installation
(1)
Remove the sealant from the mating surface of the manifold (1) and the aircraft structure with a plastic or wooden scraper.
(2)
Examine the structure of the aircraft in the area of the manifold attachment for cracks, corrosion or other damage.
(3)
Apply a layer of SEALANTS (Material No. 09-018) to the mating surface of the manifold (1).
R Subtask 29-19-41-420-050-A
R B. Installation of the Ground Leakage-Measurement Manifold (1146GM)
R CAUTION : USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN_______
R YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU USE
R THE SECOND WRENCH, YOU WILL NOT LOOSEN OR TIGHTEN THE UNION TOO
R MUCH.
R CAUTION : YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS_______
R LUBRICANT.
R (1) Put the manifold (1) in position on the aircraft and install the
R bolts (2) and the washers (3). Do not tighten the bolts (2).
R (2) Remove the blanking plugs from the pipe end-fittings and the unions
R on the manifold (1).
R (3) Make sure that the hydraulic line end-fittings are serviceable.
R (4) Apply the HYDRAULIC FLUIDS (Material No. 02-003) to the threads of
R the line end-fittings.
R (5) Connect the pipe (16) to the union (18).
R (6) TORQUE the pipe end-fitting (17) to between 5.4 and 5.9 m.daN (39.82
R and 43.51 lbf.ft).
R (7) Connect the pipe (15) to the union (13).
R (8) TORQUE the pipe end-fitting (14) to between 7.5 and 8.3 m.daN (55.30
R and 61.20 lbf.ft).
R (9) Connect the pipe (10) to the union (12).
R (10) TORQUE the pipe end-fitting (11) to between 2.9 and 3.2 m.daN (21.38
R and 23.59 lbf.ft).
R (11) Connect the pipe (7) to the union (9).
R (12) TORQUE the pipe end-fitting (8) to between 5.4 and 5.9 m.daN (39.82
R and 43.51 lbf.ft).
R (13) Connect the pipe (6) to the union (4).
R (14) TORQUE the pipe end-fitting (5) to between 2.9 and 3.2 m.daN (21.38
R and 23.59 lbf.ft).
R (15) Tighten the bolts (2).
Subtask 29-19-41-865-052
R C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1701GK, 1702GK, 1881GP.
Subtask 29-19-41-860-055
R D. Preparation for the Test
(1) Connect the isolation coupling of the Power Transfer Unit (PTU) (Ref. TASK 29-23-00-860-002).
(2) Pressurize the reservoir of the Green hydraulic system (Ref. TASK 29-14-00-614-002).
(3) Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
(4) Make sure that the fluid level in the reservoir of the Green hydraulic system is correct. Add fluid as necessary (Ref. TASK 12-12-29-611-001) or (Ref. TASK 12-12-29-611-002).
(5) Pressurize the Green hydraulic system (Ref. TASK 29-10-00-863-001).
(6) On the maintenance panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/G pushbutton switch is set to on (OFF light not on).
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