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SUBTASK 27-83-21-020-001
(2) Disconnect the electrical connectors [6] and [7] from the autoslat control valve [1].
SUBTASK 27-83-21-480-002
(3) Put a bucket or other suitable container to collect hydraulic fluid under the autoslat control valve
[1].
SUBTASK 27-83-21-020-002
(4) Disconnect the hydraulic lines [4], [5], [8] and [9] from the autoslat control valve [1].
SUBTASK 27-83-21-020-003
(5) Remove the bolts [2] and washers [3] and remove the autoslat control valve [1].
SUBTASK 27-83-21-480-003
(6) Install caps on the hydraulic lines [4], [5], [8] and [9].
SUBTASK 27-83-21-480-004
(7) Install plugs in the hydraulic ports on the autoslat control valve [1].
------------------------- END OF TASK ---------------------------
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Autoslat Control Valve Installation
Figure 401/27-83-21-990-801
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TASK 27-83-21-400-801
3. Autoslat Control Valve Installation
(Figure 401)
A. References
Reference Title
12-12-00-610-801 Hydraulic Reservoir Servicing (P/B 301)
27-83-00-710-801 Leading Edge Autoslat System - Functional Test (P/B 501)
29-11-00-860-805 Hydraulic System A or B Power Removal (P/B 201)
32-00-01-480-801 Landing Gear Downlock Pins Installation (P/B 201)
SWPM 20-60-03 Standard Wiring Practices Manual
WDM D6-54446 Wiring Diagram Manual
B. Consumable Materials
Reference Description Specification
A00247 Sealant - Pressure And Environmental - Chromate
Type
BMS5-95
G50171 Compound - Corrosion Inhibiting Compound,
Interior Application - D5026NS or ZC-026
C. Expendables/Parts
AMM Item Description AIPC Reference AIPC Effectivity
1 Autoslat control valve 27-83-21-01-005 GUN ALL
D. Location Zones
Zone Area
192 Lower Wing-To-Body Fairing - Under Wing Box
E. Access Panels
Number Name/Location
192BR ECS Ram Air Inlet Mixing Duct Panel - Forward
F. Prepare for the Installation
SUBTASK 27-83-21-480-005
WARNING: MAKE SURE THE DOWNLOCK PINS ARE INSTALLED ON ALL THE LANDING GEAR.
WITHOUT THE DOWNLOCK PINS, THE LANDING GEAR COULD RETRACT AND CAUSE
INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) If the downlock pins are not installed on the main and nose landing gear, do this task: Landing
Gear Downlock Pins Installation, TASK 32-00-01-480-801.
SUBTASK 27-83-21-860-003
(2) Make sure there is no hydraulic power. If there is, do this task: Hydraulic System A or B Power
Removal, TASK 29-11-00-860-805.
G. Autoslat Control Valve Installation
SUBTASK 27-83-21-420-001
(1) Install the autoslat control valve [1]:
(a) Make sure the mating surface of the autoslat control valve [1] and mounting bracket are
clean.
(b) Apply sealant, A00247 on the bolt [2] threads.
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(c) Put the autoslat control valve [1] in its position on the bracket [2].
(d) Install the bolts [2] and washers [3] that attach the autoslat control valve [1].
(e) Make sure the bonding resistance between the autoslat control valve [1] and the structure
is less than 0.0025 ohms (WDM D6-54446).
(f) Remove the caps from the hydraulic lines [4], [5], [8] and [9] and the plugs from the ports on
the autoslat control valve [1].
SUBTASK 27-83-21-420-002
(2) Connect the hydraulic lines [4], [5], [8], and [9] to the autoslat control valve [1].
SUBTASK 27-83-21-210-002
(3) Before you connect the electrical connectors [6] and [7], examine the connectors for corrosion.
WARNING: DO THE STEPS BELOW IF THE AIRPLANE OPERATES AT AIRPORTS WHERE
DEICING FLUID THAT CONTAIN POTASSIUM FORMATE IS USED. ALSO DO THE
STEPS FOR ALL AIRPLANES THAT YOU FOUND CORROSION IN THE
ELECTRICAL CONNECTORS IN THE MAIN WHEEL WELL. THE ELECTRICAL
CONNECTOR IS PART OF A SYSTEM THAT IS NECESSARY FOR SAFE FLIGHT.
(a) If there was corrosion, refer to (SWPM 20-60-03) to correct the problem.
(b) Apply the D5026NS or ZC-026 compound, G50171 to the connectors (SWPM 20-60-03).
SUBTASK 27-83-21-420-003
(4) Connect the electrical connectors [6] and [7] to the autoslat control valve [1].
SUBTASK 27-83-21-860-004
　
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