747-400 AMM 飞机维护手册 动力装置 POWER PLANT 1(25)

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 CAUTION: DO NOT USE THE AIRPLANE INDICATION OF THE TOTAL AIR TEMPERATURE
_______ FOR THE AMBIENT AIR TEMPERATURE.
 CAUTION:_______DO NOT HAVE A MERCURY THERMOMETER ON THE AIRPLANE. IF THE MERCURY THERMOMETER BREAKS, THE MERCURY WHICH TOUCHES THE AIRPLANE COMPONENTS CAN CAUSE DAMAGE TO THE COMPONENT.
 (15) Find the ambient air temperature [outside air temperature (OAT)] with the thermometer.
 (a)  Get the value from the area which is not in the sunlight on the airplane.
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(b)  Make a record of the OAT.
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 (16)
 Remove the engine inlet and exhaust covers, if they are installed.

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 (17)
 Remove the covers for the pitot probes, if installed.

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 CAUTION: DO NOT OPERATE THE ENGINE WITH THE COWLING OPEN IF WINDS ARE
_______ MORE THAN 20 KNOTS. THE HIGH SPEED WINDS CAN CAUSE DAMAGE TO EQUIPMENT.
 (18) If you will operate the engine with the cowling open, do the steps that follow:
 (a)  Open the fan cowl panels (AMM 71-11-04/201).
 WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT
_______
 THE OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL
 OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO
 PERSONS OR DAMAGE TO EQUIPMENT.

 (b)  
Do this procedure: Thrust Reverser Deactivation for Ground
 Maintenance (AMM 78-31-00/201).

 (c)  
Remove the core cowl panels (AMM 71-11-06/401).

 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00 WHEN YOU OPEN THE
_______
 THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS,
 INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.

 (d)  
Open the thrust reversers (AMM 78-31-00/201).

 (e)  
Install the hold-open equipment for the thrust reverser on each opening actuator for the thrust reverser as follows (Fig. 207): 1) Put the actuator lock on the actuator rod. 2) Make sure the lock yoke is against the bolt that attaches

 the actuator rod. 3) Make sure the lock channel is against the actuator
 cylinder. 4) Put the channel clamp around the actuator rod. 5) Tighten the knurled-head screw to attach the channel clamp
 to the actuator rod.
 6)  Let the opening actuator close a small distance to remove the load from the opening actuator. a) This will move the load from the opening actuator to
 the actuator lock.
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 (19) If you will not operate the engine with the cowling open, make sure of the steps that follow:
 (a) The core cowl panels are closed and latched (AMM 71-11-06/201).
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ACTUATOR LOCK

Thrust Reverser Hold Open Equipment Installation
Figure 207

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(b)  
The thrust reversers are closed and latched (AMM 78-31-00/201).

 (c)  
The fan cowl panels are closed and latched (AMM 71-11-04/201).

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 (20) Make sure you have the conditions that follow:
 (a)  
The forward thrust lever is at idle.

 (b)  
The reverse thrust lever is in the off (stowed) position.
　
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