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727.00 - Left
134 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Right
E. Valve Installation
SUBTASK 27-62-41-800-001
(1) Make sure the valve lever [17] move smoothly through the full range of travel.
SUBTASK 27-62-41-420-001
(2) Install the valve assembly [8]:
(a) Install the packing [4] and packings [9] and reducer [3] and reducers [10] in the hydraulic
ports on the valve assembly [8]:
1) Remove the caps from the ports in the valve assembly [8].
2) Apply a thin layer of grease, D00633 on the packing [4] and packings [9].
3) Install the packing [4] and packings [9] and the reducer [3] and reducers [10] in the
hydraulic ports.
(b) Remove the plugs from the hydraulic line [2] and hydraulic lines [11].
(c) Put the valve assembly [8] in its position on the bracket [1].
(d) Loosely install the connections for the hydraulic tubes on the valve assembly [8].
(e) Install nuts [7], washer [6] and bolts [5] that attach the valve assembly [8].
(f) Install bolt [12] with the bolt head up, washer [13], nut [14] and pin [15].
(g) Tighten the connections for the hydraulic lines.
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SUBTASK 27-62-41-860-002
(3) Put the speed brake system A back to the condition before the pressure removal. To do this, do
this task: Put the Speed Brake Systems A and B Back to the Condition Before the Pressure
Removal, TASK 27-62-00-840-802
SUBTASK 27-62-41-820-001
(4) Do this task: Ground Spoiler Control Valve Adjustment, TASK 27-62-00-000-801.
SUBTASK 27-62-41-720-001
(5) Do this task: Ground Spoiler Control Valve Functional Test, TASK 27-62-41-720-801.
------------------------- END OF TASK ---------------------------
TASK 27-62-41-720-801
4. Ground Spoiler Control Valve Functional Test
A. References
Reference Title
12-12-00-610-801 Hydraulic Reservoir Servicing (P/B 301)
24-22-00-860-811 Supply Electrical Power (P/B 201)
27-62-00-800-801 Speed Brake Hydraulic Systems A and B Pressurization (P/B 201)
27-62-00-840-801 Put the Speed Brake Hydraulic systems A and B Back to the
Condition Before the Pressurization (P/B 201)
B. Location Zones
Zone Area
133 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Left
134 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Right
210 Subzone - Control Compartment - Body Station 178.00 to Body
Station 259.50
C. Valve Test
SUBTASK 27-62-41-860-003
(1) Do this task: Supply Electrical Power, TASK 24-22-00-860-811.
SUBTASK 27-62-41-860-004
(2) Pressurize speed brake hydraulic system A. To pressurize, do this task: Speed Brake Hydraulic
Systems A and B Pressurization, TASK 27-62-00-800-801
SUBTASK 27-62-41-210-001
(3) Examine the hydraulic connections on the valve assembly [8] for leakage.
SUBTASK 27-62-41-870-001
(4) Move the speed brake lever through more than one full cycle to bleed the hydraulic system.
SUBTASK 27-62-41-720-002
(5) Do the test fo the valve assembly [8]:
(a) Make sure the speed brake lever is in the DOWN position.
(b) Move the speed brake lever aft until the ground spoilers move to the extended position.
(c) Make sure the speed brake lever is 29 +/-2 degrees (2.66 +/-0.20 inches) (67.6 +/-5.1
millimeters) aft of the DOWN position.
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(d) Move the speed brake lever to the UP position.
(e) Move the speed brake lever forward until the ground spoilers move to the retracted
position.
(f) Make sure the speed brake lever is 21 +/-4 degrees (1.93 +/-0.40 inches) (49.0 +/-10.2
millimeters) aft of the DOWN position.
(g) Move the speed brake lever to the DOWN position.
SUBTASK 27-62-41-860-005
(6) Put the speed brake hydraulic system A back to the condition before pressurization. To do this,
do this task: Put the Speed Brake Hydraulic systems A and B Back to the Condition Before
the Pressurization, TASK 27-62-00-840-801
SUBTASK 27-62-41-610-001
(7) Make sure the hydraulic reservoirs are full. To fill them, do this task: Hydraulic Reservoir
Servicing, TASK 12-12-00-610-801.
------------------------- END OF TASK ---------------------------
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