747-400 AMM 飞机维护手册 动力装置 POWER PLANT 2(17)

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c) Tighten the knobs on the fan cowl tube to attach it to the fan cowl panel. 4) Put the lockpin into the pin hole on the thrust reverser tube. 5) Install the hold-open rods on the fan cowl panel to the stow bracket on the fan cowl panel.
 (c)  Install the aft tube assembly on the core cowl panel (View C and F). 1) For the left core cowl, put the attachment block into the
 loop of the core cowl panel.
 NOTE: Make sure the pins on the attachment block engage
____ the pin holes on the core cowl panel.
 a)  Put a pin in the lockhole into the attachment block to attach the core cowl attachment to the core cowl panel.
 2)  For the right core cowl, install the attachment block on the core cowl latch with the steps follow: a) Put the loop of the attachment block into the core cowl
 latch.
 NOTE: Make sure the pins on the attachment block
____ engage the pin holes on the core cowl panel.
 b) Close the core cowl latch. 3) Put the aft tube into the thrust reverser tube. 4) Turn the aft tube to install the other end of the aft tube
 on the attachment block. 5) Put the lockpin into the pin hole on the thrust reverser
 tube. 6) Put the pin into the aft tube and the attachment block. 7) Install the hold-open rods on the core cowl panel to the
 stow bracket on the core cowl panel.
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 (16) For outboard struts, do this task:  Spring Beam Bolt Rotation Check (AMM 54-51-03/601).
 NOTE: It is easier to do this task with the engine off of the
____ strut. This task is optional for the engine installation procedure.
 F.  Install the Power Plant with the PT90-E (Fig. 411A).
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S 944-185-N00
 CAUTION: MAKE SURE THAT THE ENGINE CONFIGURATION AND THE ENGINE
_______ DESIGNATION ON THE ENGINE IDENTIFICATION PLATE, INSTALLED ON FLANGE C ON THE FAN CASE, AGREE WITH EACH OTHER.
 (1)  
Put the protection pad in position on each side of the turbine exhaust sleeve.

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 (2)  
Put the PT90-E and the power plant in the correct position below the strut.

 NOTE: Move the assembly below the strut from the front end.
____
 (a)  
If it is necessary, use plumb lines from the center of the engine mounts to put a mark (plumb line A) on the ground.

 (b)  
Make a second mark (plumb line B) approximately 7 inches inboard of plumb line A.

 (c)  
Move the engine hoist and the power plant into position at the front end.

 (d)  
Use the forward and aft tow bars to control the PT90-E and put the power plant into position above plumb line B while you move the engine hoist and the power plant.

 (e)  
Move the engine hoist and the power plant until the engine mounts are approximately 4 inches forward of the engine mounts on the strut.

 NOTE: The power plant and engine hoist will slightly move to
____
 the rear as it is lifted.

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 (3)  Use the control box to lift the power plant and the cradle
 (a)  
Make sure that all the tools and mechanics necessary to install the power plant are on the PT90-E.

 (b)  
Set the load distribution display to zero.

 (c)  
Set the load limit to 11,500 pounds.

 (d)  
Make sure the AUTOGUARD button is in the out (on) position.

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
CAUTION: MAKE SURE YOU LIFT THE POWER PLANT WITH THE FORWARD END
_______ LOWER THAN THE AFT END. IF YOU DO NOT DO THIS, THE TOP OF THE ENGINE FAN CASE CAN TOUCH THE THRUST REVERSER AND CAUSE DAMAGE TO EQUIPMENT.
 (e)  Use the control box to lift the power plant until the forward and aft engine mounts are apporximately 6 inches (150 mm) from the strut interfaces.
　
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