S 862-010

 (2)  
Remove the electrical power if it is not necessary
 (AMM 24-22-00/201).

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A 737-300/400/500MAINTENANCE MANUAL

Spoiler Power Control Switches
Figure 201

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A 737-300/400/500MAINTENANCE MANUAL
 S 092-011
 (3)  Remove the ground lock assembly from the nose gear
 (AMM 32-00-01/201).

 TASK 27-61-00-862-012
 3. Spoiler Hydraulic Systems A and B Depressurization
__________________________________________________
 A. Special Tools and Equipment
 (1)  
Flight Control Lock Assembly - F80049 (2 Necessary)

 B.
References

 (1)
AMM 29-09-00/201, Hydraulic Reservoir Pressurization System

 C.
Access

 (1)  
Location Zone
 101, 102 Control Cabin
 216, 217 Main Wheel Well

 D.
Remove the Pressure from Spoiler Hydraulic Systems A and B

 S 862-030
 (1)  
Set the FLT CONTROL SPOILER A and B switches on the forward overhead panel to the OFF position (Fig. 201).

 S 862-014

 (2)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P6-2 Panel
 1) SHUTOFF VALVES - SPOILER

 S 862-015
 (3)  
Set the ELEC 2 HYD PUMPS A and the ELEC 1 HYD PUMPS B switches on the forward overhead panel to the OFF position.

 S 862-016

 (4)  
Move the rudder pedals to release the pressure in the hydraulic system.

 S 862-017

 (5)  
If you will remove hydraulic connections, make sure you release the pressure from the reservoirs for hydraulic systems A and B (AMM 29-09-00/201).

 S 492-024

 (6)  
Install the flight control lock assemblies (Fig. 202).

 (a)  
Disconnect the electrical connectors from the spoiler control shutoff valve at the system A flight controls hydraulic module in the left wheel well.

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A 737-300/400/500MAINTENANCE MANUAL
SEE A
LOCK F80049
SPOILER SHUTOFF FLIGHT CONTROL
VALVE SHUTOFF VALVE
FLIGHT CONTROL HYDRAULIC MODULE
A

Hydraulic Module Lock Installation
Figure 202

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A
737-300/400/500MAINTENANCE MANUAL
 (b)  
Disconnect the electrical connectors from the spoiler control shutoff valve at the system B flight controls hydraulic module in the right wheel well.

 (c)  
Make sure the manual override lever at the two spoiler control shutoff valves are in position 2 (OFF position).

 (d)  
Install a flight control lock assembly on each flight control shutoff valve and install the lockpins.

 E.
Put the Airplane Back to Its Usual Condition

 S 092-018
 (1)  
　
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