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 CAUTION: MAKE SURE THE LACING TAPE IS NOT TOO TIGHT AROUND THE
_______ WIRE HARNESS. DAMAGE TO THE WIRE HARNESS CAN OCCUR.
 2) Attach the wire harness jumper (5) to the wire harness with a clove hitch knot. 3) Use the ends of the lacing tape to make a square knot above the clove hitch knot. 4) Remove the ends of the lacing tape with a knife. a) Make sure you leave a length of 1/4-1/2 inch (6.3-12.6 mm) on each of the tape.
 S 394-161
 (4)  Apply the sealant to the area of the harness support bracket (37), around the J1 connector (34), that does not have an anodized finish.
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A
747-400 MAINTENANCE MANUAL
 S 414-162
 (5)  
Close the APU access doors:

 (a)  
Do a visual check of the EGT bus bars: 1) Make sure the bus bars are not damaged. 2) Make sure no metal parts touch the bus bars. 3) Make sure the bus bars do not touch each other.

 (b)  
Disengage the support rods for the APU access doors.

 (c)  
Put the support rods in the clips on the inner side of the APU access doors.

 (d)  
Make sure the insulation covers correctly attach to the APU compartment firewall.

 (e)  
Close the APU access doors.

 (f)  
Close the latches on the APU access doors.

 S 864-163
 (6)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6 Main Power Supply Panel
 1) 6K18 APU ALTN CONT

 (b)  
P83 Panel, E8 Aft Equipment Center
 1) APU PRIMARY CONT

 

 S 864-164
 (7)  Remove the DO-NOT-OPERATE tag from the APU control switch on the P5 panel.
 TASK 49-14-00-004-171
 6.  APU WITHOUT A WIRE HARNESS JUMPER (POST-PWC-SB 16142); APU Front Wire Harness Removal (Fig. 403)______________________________
 A.  References
 (1)  
WDM 49-11-16, 49-11-17, 49-11-18

 (2)  
SSM 49-11-01

 (3)  
IPC 49-14-00 Fig. 1

 B.  
Access

 (1)  
Location Zone 317 APU Compartment-Forward of Air Inlet Plenum on APU Engine, LH

 318  APU Compartment-Forward of Air Inlet Plenum on APU Engine, RH

 (2)  
Access Panel
 317AL APU Access Door
 318AR APU Access Door

 

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747-400
MAINTENANCE MANUAL

T13 AIR TEMPERATURE SENSOR
2.
 NUT

3.
 BOLT 1. P20 CONNECTOR

4.
 CLAMP

5.
 GROMMET

6.
 P21 CONNECTOR SEE A

SEE B
7. NUT
SEE C 8. BOLT

9. CLAMP DIVERTER VALVE CONTROL
10.
 GROMMET

11.
 NUT

12.
 BOLT

13.
 CLAMP

T12 AIR
TEMPERATURE

OIL LEVEL SENSERSENSOR 14. P19 CONNECTOR 19. P23 CONNECTOR
15.
 NUT

16.
 BOLT

17.
 CLAMP

18.
 GROMMET

11.
 NUT

12.
 BOLT

A
13. CLAMP  C36341
APU Front Wire Harness Installation
Figure 403 (Sheet 1)

K66015
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747-400
MAINTENANCE MANUAL

20. P18 CONNECTOR 
N1 SPEED SENSOR 
21. NUT 
　
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