(2)
Make sure that the ground safety locks are on the landing gear (Ref. TASK 32-00-00-481-001).
(3)
On the panel 400VU:
-make sure that the landing-gear control-lever 6GA is in the DOWN position
-put a warning notice in position to tell persons not to operate the landing gear.
4. Procedure
_________
Subtask 12-12-32-611-054
A. Replenishment of the MLG Torque Link Damper R (Ref. Fig. 307/TASK 12-12-32-991-014)
WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL
_______ MATERIALS ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
(1)
Remove the sealant from the bleed screw (1) and the bleed plug (2) with the spatula, non-metallic.
(2)
Remove and discard the lockwire from the cap assembly (6) and the bleed screw (1).
(3)
Clean the items that follow with MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-003):
-
the bleed screw (1)
-
the bleed plug (2)
-
the bleed plug housing (8).
(4)
Remove the cap assembly (6) and the bleed screw (1).
(5)
Install the BLEED ADAPTOR (460006804) to the bleed plug (2).
(6)
Install the bleed pipe on the BLEED ADAPTOR.
(7)
Put a container below the bleed pipe.
(8)
Install a approved AN connector to the check valve (7) and connect a hydraulic ground cart or a hydraulic source, minimum supply pressure 50 PSI that contains HYDRAULIC FLUIDS (Material No. 02-003).
(9)
You must obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(10)
Supply hydraulic fluid, at a pressure of between 2.42 bar (35 psi) and 2.75 bar (40 psi), to the check valve (7).
(11)
Keep the hydraulic pressure until you get an air-free flow of fluid from the bleed plug (2).
(12)
Increase the pressure of the hydraulic fluid to between 2.75 bar (40 psi) and 3.45 bar (50 psi).
(13)
Close the bleed plug (2).
(14)
Make sure that the reservoir can (4) moves between 1.5 mm (0.05 in.) and 3.1 mm (0.12 in.) above the FULL level indicator line.
(15)
Keep the hydraulic pressure for a time of 3 minutes. During the 3 minutes make sure that:
-no external leakage of fluid occurs
-the reservoir can (4) does not move.
(16)
If there is leakage and/or the reservoir-can (4) moves:
-slowly open the bleed plug (2) to release the hydraulic pressure
-do the steps (9) thru (14) again.
(17)
Decrease the hydraulic pressure to zero. Disconnect the hydraulic ground cart or the hydraulic source and the approved AN connector from the check valve (7).
(18)
Measure the quantity of hydraulic fluid that comes out of the check valve (7) during a time of 15 seconds. There must be no more than 15 drops.
(19)
Open the bleed plug (2) slowly until the reservoir can (4) becomes level with the FULL line. Close the bleed plug (2).
(20)
If the released hydraulic fluid contains air:
-slowly open the bleed plug (2) to release the hydraulic pressure
-do the steps (9) thru (18) again.
(21)
Remove the bleed pipe and the BLEED ADAPTOR from the bleed plug (2).
(22)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(23)
Install the cap assembly (6) on the check valve (7).
(24)
Install the bleed screw (1) in the bleed plug (2).
(25)
TORQUE the bleed screw (1) to between 0.17 and 0.22 m.daN (15.04 and
R Torque Link Damper Figure 307/TASK 12-12-32-991-014
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