CAUTION:_______DO NOT PUT PRESSURE INTO THE EEC. IF YOU DO, YOU CAN
CAUSE DAMAGE TO THE EEC.
CAUTION:_______DO NOT PUT PRESSURE INTO THE SCU (IF INSTALLED). IF YOU DO, YOU CAN CAUSE DAMAGE TO THE SCU.
(d)
Use 20 psi (137.9 kPa) shop air or Nitrogen and remove any
water from each sensing system.
(e)
Remove the adapters and fittings.
S 427-169-N00
CAUTION: DO NOT USE LUBRICANTS ON EEC AND SCU SENSING TUBES, ADAPTERS OR
_______ PACKINGS (IF INSTALLED). IF YOU DO, CONTAMINATION CAN OCCUR TO THESE COMPONENTS.
(23)
Connect the EEC and SCU (if installed) sensing hoses as follows:
(a)
Do not apply lubricant to the hoses or adapters.
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(b) Attach the rear PB flex hose (AS12) to the adapter in the port marked PB. 1) Hold the adapter with a wrench and torque the flex hose nut
to 270 - 300 pound-inches (30.506 - 33.895 newton-meters).
a) If the hose nuts have lockwire holes, install the Lockwire (P05-289) or Safety Cable (P05-291) and Safety Cable Ferrule (P05-292) to safety the hose nuts.
(c) Attach the P4.95 flex hose (AS13) to the adapter in the port marked P5. 1) Hold the adapter with a wrench and torque the flex hose nut
to 450 - 500 pound-inches (50.843 - 56.492 newton-meters).
a) If the hose nuts have lockwire holes, install the Lockwire (P05-289) or Safety Cable (P05-291) and Safety Cable Ferrule (P05-292) to safety the hose nuts.
(d) Attach the PAMB flex hose (AS10) to the adapter in the port marked PAMB. 1) Hold the adapter with a wrench and torque the flex hose nut
to 135 - 150 pound-inches (15.253 - 16.948 newton-meters).
a) If the hose nuts have lockwire holes, install the Lockwire (P05-289) or Safety Cable (P05-291) and Safety Cable Ferrule (P05-292) to safety the hose nuts.
(e) Attach the P2 flex hose (AS11) to the adapter marked P2.
1) Hold the adapter with a wrench and torque the flex hose nut to 90 - 100 pound-inches (10.169 - 11.298 newton-meters). a) If the hose nuts have lockwire holes, install the
Lockwire (P05-289) or Safety Cable (P05-291) and Safety Cable Ferrule (P05-292) to safety the hose nuts.
(f) If the supplemental control unit has the multiplexing option, attach the P2.5 flex hose (AS38) to the adapter at the bottom side of the supplemental control unit. 1) Hold the adapter with a wrench and torque the flex hose nut
to 270 - 300 pound-inches (30.506 - 33.895 newton-meters).
a) If the hose nuts have lockwire holes, install the Lockwire (P05-289) or Safety Cable (P05-291) and Safety Cable Ferrule (P05-292) to safety the hose nuts.
S 417-045-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00 WHEN YOU CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(24)
Close the thrust reverser (AMM 78-31-00/201).
(25)
Close the core cowl panels (AMM 71-11-06/201).
(26)
Close the fan cowl panels (AMM 71-11-04/201).
S 417-046-N00
S 417-047-N00
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S 717-098-N00
(27)
Check the Environmental Control System for odors as follows:
(a)
Start the engine by the Engine Starting Procedure (Normal). (AMM 71-00-00/201).
(b)
Run the engine at sufficient power to allow the main oil temperature to reach 220°F (104.4°C) minimum for a minimum of two minutes.
(c)
Operate the air conditioning packs and make sure there is no odor.
NOTE: If there is odor, continue to operate engine until you
____ do not notice the odor.
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