(a)
Remove the brake selector valve 23GG (Ref. TASK 32-42-11-000-001).
(b)
Remove the priority valve 1064GM (Ref. TASK 29-11-33-000-001).
(c)
Remove the bobbins (14),(30) from the manifold (35) (Ref. TASK 20-23-21-911-001).
(d)
Remove and discard:
-
the square-section seals (62), (65),
-
the O-rings (60), (63) and
-
the back-up rings (15), (61), (64), (31).
(e)
Put the bobbins into plastic bags to keep them clean.
(f)
Remove the check valve 1093GM and discard the O-ring (34).
(g)
Install the blanking plugs on the open ports of the manifold (35).
(h)
Install the blanking plugs on all of the removed components.
(2)
Install the removed components onto the replacement manifold as follows:
(a)
Remove the blanking plugs from the manifold (35) and the
components.
(b)
Lubricate the new O-rings and the threads of the components with HYDRAULIC FLUIDS (Material No. 02-003).
(c)
Put the new O-ring (34) in position on the check valve 1093GM.
(d)
Install the check valve 1093GM in port D of the manifold (35).
(e)
TORQUE the check valve 1093GM to between 7.5 and 8.3 m.daN (55.30 and 61.20 lbf.ft).
(f)
Apply HYDRAULIC FLUIDS (Material No. 02-003) to the new:
-square-section seals (62), (65),
-O-rings (60),(63) and
-back-up rings (15), (61), (64), (31).
(g)
Put the new back-up rings (61) in position on the sides of the bobbins (14) without the identification grooves (equipment side).
(h)
Put the new square section seals (62) in position on the sides of the bobbins (14) without the identification grooves (equipment side).
(i)
Put the new back-up rings (15) in position on the sides of the bobbins (14) with the identification grooves (manifold side).
(j)
Put the new O-rings (60) in position on the sides of the bobbins
(14) with the identification grooves (manifold side).
(k)
Install the bobbins (14) with the identification grooves in the ports of the manifold (35) (Ref. TASK 20-23-21-911-001).
(l)
Put the new back-up rings (64) in position on the sides of the bobbins (30) without the identification grooves (equipment side).
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(m)
Put the new square-section seals (65) in position on the sides of the bobbins (30) without the identification grooves (equipment side).
(n)
Put the new back-up rings (31) in position on the sides of the bobbins (30) with the identification grooves (manifold side).
(o)
Put the new O-rings (63) in position on the sides of the bobbins
(30) with the identification grooves (manifold side).
(p)
Install the bobbins (30) with the identification grooves in the ports of the manifold (35) (Ref. TASK 20-23-21-911-001).
(q)
Install the priority valve 1064GM (Ref. TASK 29-11-33-400-001).
(r)
Install the brake selector valve 23GG (Ref. TASK 32-42-11-400-001).
Subtask 29-11-15-420-050-A
B. Installation of the Manifold CAUTION : USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN
_______ YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU USE THE SECOND WRENCH, YOU WILL NOT LOOSEN OR TIGHTEN THE UNION TOO MUCH.
CAUTION : YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS
_______
LUBRICANT.
(1)
Remove the sealant from the mating surface of the manifold (35) 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 (35).
(4)
Put the manifold (35) and the spacer (13) in position on the aircraft and install the four washers (12) and nuts (11). Do not tighten the nuts (11).
(5)
Remove the blanking plugs from the pipe end-fittings and the unions on the manifold (35).
(6)
Make sure that the hydraulic line end-fittings are serviceable.
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