B-B
Control Wheel Position Transmitter Assembly Installation
Figure 401 (Sheet 2)

M27112
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A
747-400 MAINTENANCE MANUAL
 (b)  
Disconnect the electrical connector from the transmitter.

 (c)  
Remove the clamping bolts and nuts.

 (d)  
Remove the position transmitter.

 TASK 27-08-01-404-014
 3.  Control Wheel Position Transmitter Assembly Installation (Fig. 401)________________________________________________________
 A. Special Tools and Equipment
 (1)  
4MIT65B80307-1 Protractor Assembly - Control Column

 (2)  
MIT65B04001-41 Control Wheel Straightedge

 B.
References

 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 25-59-01/401, Main Deck Compartment Cargo Lining Panel

 (3)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (4)  
AIPC 27-18-51, Fig. 1

 (5)  
SSM 27-09-05

 (6)  
WDM 27-09-31

 (7)  
WDM 20-90-11

 C.
Access

 (1)  
Location Zone 211 Passenger Cabin - Nose to First Door, LH

 D.
Install the Transmitter Assembly

 S 424-231
 (1)  
Install the position transmitter (Fig. 401):

 (a)  
Make sure the control wheels are in the neutral postion.

 (b)  
Put the position transmitter in the clamping bracket.

 (c)  
Line up the "T" mark on the shaft end of the transmitter with the slot on the bracket.

 (d)  
Line up the "EZ" mark on the transmitter with the mark on the clamping bracket.

 (e)  
Install the clamping bolts and the nuts.

 (f)  
Tighten the clamping bolts and the nuts.

 (g)  
Connect the electrical connector to the transmitter.

 (h)  
Install the wire clamp to the transmitter.

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A
747-400 MAINTENANCE MANUAL
 S 864-172
 (2)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6, Main Power Distribution Panel
 1) 6J23, COL/RUD PEDAL IND
 2) 6J22, COL/RUD PEDAL SENSOR

 E.
Adjust the Transmitter Assembly

 S 864-128
 (1)  Supply electrical power (AMM 24-22-00/201).
 S 864-112
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (2)  
Supply hydraulic power (AMM 29-11-00/201)

 S 824-008

 (3)  
Adjust the transmitter assembly:

 (a)  
Put the control wheels in the neutral position and clamp a straight edge in place.

 (b)  
Do the following to adjust the Control Wheel Position Transmitter: 1) Open the circuit breaker 6J22 on the P6 panel for the

 Control Wheel Position Transmitter and attach a DO-NOT-CLOSE tag. 2) Attach a power supply or a Syncro Breakout Box and Phase Angle Voltmeter to the transmitter connector. 3) Apply a 26 VAC, 400 Hz across the pins 1 and 2 of the transmitter connector.
 NOTE: If airplane power is used, close the 6J22 circuit
____ breaker on the P6 panel for the Control Wheel Position Transmitter.
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