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 3) Upward to the rear of the left hand side of the air inlet
 plenum.
 (x)  Loosely attach the harness onto the brackets on the accessory
 gearbox cover, the No. 4 bearing scavenge tube and the metered
 fuel pressure tube with the three clamps (30), the three
 bolts (29) and the three nuts (28).
 (y)  Adjust the harness to ensure that it is not too loose or too
 strained at the end by the P6 connector (23).
 1) Tighten the three nuts (28).
 (z)  Remove the top, inner bolt (20) from the pressure sensor on the
 inlet plenum.
 1) Install the bolt (20) through the clamp (22) and into the
 pressure sensor and tighten with your fingers.

 (aa) Install the ground wire onto the other clamp (22) and loosely attach the harness to the air inlet plenum with the spacer (21) and the bolt (20).
 (ab) Connect the P9 connector (17) to the P1 inlet pressure sensor.
 NOTE: The connector is fully tightened when you cannot see
____ the red color area.
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747-400 MAINTENANCE MANUAL
 (ac) Connect the P12 connector (18) to the identification unit for the serial number.
 NOTE: The connector is fully tightened when you cannot see
____
 the red color area.

 (ad) Connect the P11 connector (19) to the T6 thermocouple trim unit.
 NOTE: The connector is fully tightened when you cannot see
____
 the red color area.

 (ae) Adjust the harness to ensure that it is not too loose or too strained at the P9 connector (17), the P12 connector (18) and P11 connector (19). 1) Tighten the two bolts (22).
 (af) Loosely attach the harness to the air inlet plenum with the clamp (3), the spacer (2) and the bolt (1). (ag) Loosely attach the harness to the bracket on the gas generator flange with the clamp (3), the spacer (2) and the bolt (1). (ah) Connect the P10 connector (4) to the air temperature sensor (T1).
 NOTE: The connector is fully tightened when you cannot see
____
 the red color area.

 (ai) Adjust the harness to ensure that it is not too loose or too strained at the P10 connector (4). 1) Tighten the two bolts (1).
 (aj) Tighten the other bolt on the air intake plenum bracket to 36-40 pound-inches (4.1-4.5 newton-meters) and lockwire both bolts to each other.
 S 394-192
 (4)  
Apply the sealant to the edges of the J2 connector at the cable bracket face.

 S 414-194

 (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.

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 (6)  S 864-195Remove 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
 (7)  S 864-196Remove the DO-NOT-OPERATE tag from the APU control switch on the P5 panel.

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