//////////////////////// / PW4000 SERIES / / ENGINES / ////////////////////////
START SWITCH
F
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LOAD SCALE
LED
JOYSTICK (AFT)
JOYSTICK (FWD)
LATERAL BALANCE SWITCH
FWD/AFT BALANCE SWITCH
LOADCONTROL BOX
LIGHT EMITTING DIODES SCALE (LED)
DISTRIBUTION
REFER TO THE DENDRO MASKIN PT90-E OPERATION AND MAINTENANCE MANUAL FOR DIRECTIONS ON HOW TO USE THE CONTROL BOX TO OPERATE THE HOIST CORRECTLY.
PT90-E Universal Engine Changer Figure 411A (Sheet 6)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
"WIGGLE STICK"
FWD
SMALL MOTION CONTROL LINKS
CRADLE
3 (LEFT SIDE) PT90-E
3 ENGINE NOT SHOWN FOR CLARITY
Figure 411A (Sheet 7) PT90-E Universal Engine Changer
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S 494-061-N00
(1) Make sure the PT90-E is on. (a) Make sure the batteries are fully charged. (b) Make sure the master circuit breaker is in the ON position. 1) The master circuit breaker is below the battery box cover. (c) Push the START button on the aft horizontal support until you see the green light come on.
S 494-062-N00
(2) Put the PT90-E into the correct position below the power plant. (a) Put a plumb line on the center of the power plant and make a mark on the floor (plumb line A). (b) Make a second mark (plumb line B) that is approximately 7 inches inboard of the first mark (plumb line A). (c) Put the center of the PT90-E engine hoist in position above the plumb line B. 1) The forward tow bar and the aft tow bar can control the engine hoist. (d) Make sure the engine hoist and cradle are approximately 4-6 inches farther forward than necessary.
NOTE:____ The cradle and the engine hoist will slightly move to the rear while it is lifted.
S 494-063-N00
(3) Install the forward engine adapters on the engine fan case.
S 494-167-N00
(4) Connect the control box to the PT90-E. (a) Connect the control box cable to the connection on the forward end of the PT90-E.
(b) Connect the control box cable to the control box.
S 214-065-N00
(5) Look at the transverse, axial, roll and pitch scales on the PT90-E.
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(6) S 214-066-N00Make sure the pointer is at zero (center) for each scale. (a) If the pointer is not at zero (center) for one of the scales, operate the control box to put the pointer(s) at zero.
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本文鏈接地址：747-400 AMM 飛機維護手冊 動力裝置 POWER PLANT 2(3)
