(2)  
AMM 27-11-00/201, Aileron and Aileron Trim Control System

 (3)  
AIPC 27-11-14-01

 (4)  
OHM 27-37-09

 C.
Access

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

 D.
Adjust the Aileron Power Control Unit

 S 825-003
 (1)  
Adjust the power control unit:

 (a)  
Put the aileron control wheels and the trim control wheel in the neutral position.

 (b)  
Set the FLT CONTROL A and B switches on the pilot's overhead panel to the OFF position.

 (c)  
Install the rig pin A/S-4 (Fig. 502).

 (d)  
Make sure the valve lever on each of the power control unit is at the center between the valve stops. 1) If the valve levers are not at the center between the valve

 stops, do these steps:
 WARNING: DO NOT REMOVE THE VALVE ROD OF THE POWER CONTROL
_______ UNIT WITH HYDRAULIC POWER ON. IF YOU REMOVE THE VALVE ROD WITH HYDRAULIC POWER ON, INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 a) Make sure hydraulic systems A and B are released of pressure. b) Loosen the two locknuts on the valve rod.
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A 737-300/400/500MAINTENANCE MANUAL

POINT B
____ WITH THE AILERON SYSTEM ADJUSTED,
NOTE: POINT B ON EACH AILERON MUST ALIGN VERTICALLY WITH POINT A TO |0.03 INCH.
Aileron Deflection Diagram Figure 501
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A

737-300/400/500
MAINTENANCE MANUAL

SEE A
AILERON POWER POWERCONTROL UNIT CONTROL UNIT(SYSTEM B)
ATTACH BOLT
AILERON

PRESSURE
CONTROL
DECK
QUADRANT SPRING CARTRIDGE
SAFETY
LINK
CRANK
CONTROL UNIT ATTACH BOLT
A
A
AILERON BUS DRUMS
INPUT ROD SEE C
CRANK AILERON POWER CONTROL UNIT (SYSTEM A)VALVE CONTROL ROD (2 LOCATIONS) REACTION LINKS SEE B
FWD INBD
A
Aileron Power Control Unit Installation
Figure 502 (Sheet 1)

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A 737-300/400/500MAINTENANCE MANUAL

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A 737-300/400/500MAINTENANCE MANUAL
 c)  Turn the adjustable sleeve to put the valve lever at the center between the valve stops.
 NOTE:____ If you replace the valve rod, you must adjust the rod to the specified dimensions (Fig. 502), (IPC 27-11-14-01, OHM 27-37-09).
 (e)  Remove the rig pin A/S-4.
 (2)  S 865-004Do this task to pressurize hydraulic systems A and B: "Aileron Hydraulic Systems A and B Pressurization" (AMM 27-11-00/201).
 (3)  S 865-006Set the FLT CONTROL A switch to the ON position.
 (4)  S 865-007Set the FLT CONTROL B switch to the OFF position. (a) Make sure the rig pin A/S-4 can move freely in its hole in the lower bus drum. 1) If the rig pin A/S-4 cannot move freely, adjust the valve rod:
 CAUTION:_______ MAKE SURE TO REMOVE THE RIG PIN A/S-4 BEFORE YOU ADJUST THE VALVE ROD. FAILURE TO REMOVE THE RIG PIN A/S-4 CAN CAUSE DAMAGE TO EQUIPMENT.
　
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