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3) Probes with red alignment marks: a) While you push the MCD probe (4) in, turn the MCD probe (4) clockwise until it stops.
 NOTE: Make sure that the red marks on the grip are
____ aligned with the red marks on the MCD housing.
 F.  Put the Airplane Back to Its Usual Condition.
 S 414-041-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.
 (1)  
Close the thrust reverser (AMM 78-31-00/201).
 S 414-037-N00

 (2)  
Close the core cowl panel (AMM 71-11-06/201).
 S 414-038-N00

 (3)  
Close the fan cowl panel (AMM 71-11-04/201).
 S 444-039-N00

 (4)  
Do the activation procedure for the thrust reverser
 (AMM 78-31-00/201).

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MAGNETIC CHIP DETECTOR - INSPECTION/CHECK
_________________________________________
 1.  General_______
 A.  This procedure gives the tasks to examine the probes of the magnetic chip detector (MCD). Examine the MCD probes and the primary oil filter at the same time to find possible oil system contamination.
 B.  There are six MCDs installed at these locations:
 (1)  
The primary gearbox drain

 (2)  
The drain on the oil tank (the primary MCD)

 (3)  
The housing of the lubrication and the scavenge oil pump (4 locations)

 (a)  
The scavenge oil inlet for the No. 3 bearing

 (b)  
The scavenge oil inlet for the No. 4 bearing

 (c)  
The scavenge oil inlet for the angle gearbox

 (d)  
The scavenge oil inlet for the No. 1, 1.5, and No. 2 bearings

 C.  
Open the necessary thrust reverser half to get to the MCDs.

 TASK 79-21-10-206-001-N00
 2.  Do the Inspection of the Magnetic Chip Detectors_________________________________________________
 A.  Consumable Materials
 (1)  
B00113 Solvent, Petroleum (PMC 9001)

 B.  
References

 (1)  
AMM 71-11-04/201, Fan Cowl Panels

 (2)  
AMM 71-11-06/201, Core Cowl Panels

 (3)  
AMM 78-31-00/201, Thrust Reverser System

 (4)  
AMM 79-21-10/401, Magnetic Chip Detectors

 (5)  
IPC 72-61-00 Fig. 10

 (6)  
IPC 79-11-01 Fig. 10

 (7)  
IPC 79-21-04 Fig. 1

 C.  
Access

 (1)  
Location Zones

 412 Engine 1 - Main Gearbox, Aft Face, 6 o'clock Main Gearbox, Fwd Face, 6 o'clock Bottom of the Oil Tank
 422 Engine 2 - Main Gearbox, Aft Face, 6 o'clock Main Gearbox, Fwd Face, 6 o'clock Bottom of the Oil Tank
 432 Engine 3 - Main Gearbox, Aft Face, 6 o'clock Main Gearbox, Fwd Face, 6 o'clock Bottom of the Oil Tank
 442  Engine 4 - Main Gearbox, Aft Face, 6 o'clock Main Gearbox, Fwd Face, 6 o'clock Bottom of the Oil Tank
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
ANGLE GEARBOX 
NO. 3 BEARING  MAGNETIC 
MAGNETIC  CHIP DETECTOR 
CHIP DETECTOR 
NO. 1,1.5, AND 2 
BEARING MAGNETIC 
NO. 4 BEARING  CHIP DETECTOR 
MAGNETIC 
MAGNETIC CHIP  CHIP DETECTOR 
DETECTORS 
SEE  A  B 

MAIN 
GEARBOX 
(REF) 
GENERATOR (REF) INTEGRATED DRIVE  LUBRICATION AND SCAVENGE OIL PUMP  FWD 
　
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本文鏈接地址：747-400 AMM 飛機維護手冊 滑油 OIL(78)