Magnetic Chip Detector Inspection
Figure 602

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b) Tighten the overflow plug to 20-40 pound-inches (2.3-4.5 newton-meters). 4) Install a lockwire on the applicable plug.
 (c)  
If a large quantity of oil leakage is around the MCD housing, put a container below the MCD housing.

 (d)  
Remove the MCD housing.
 1) Examine the packing for damage.
 2) If the packing is damaged, replace the packing.
 3) Install the MCD housing with the new packing.

 a)  Tighten the housing to 65-85 pound-inches (7.3-9.6 newton-meters). b) Install a lockwire on the MCD housing.
 S 216-007-N00
 (7)  
Make sure the connections on the starter are good.

 S 616-008-N00

 (8)  
Add oil to the starter if it is necessary (AMM 12-13-06/301).

 S 416-004-N00
 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
 (9)  
Close the right thrust reverser (AMM 78-31-00/201).

 S 416-007-N00

 (10)
 Close the right core cowl panel (AMM 71-11-06/201).

 S 416-008-N00

 (11)
 Close the right fan cowl panel (AMM 71-11-04/201).

 S 446-009-N00

 (12)
 Do the activation procedure for the thrust reverser (AMM 78-31-00/201).

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START VALVE - REMOVAL/INSTALLATION
__________________________________
 1.  General
_______
 A.  This procedure gives the steps to remove and install the start valve (V351).
 B.  The start valve is in the pneumatic duct aft of the starter at the 5 o'clock position on the diffuser and combustor case.
 C.  You must open the thrust reverser halves to get access to the start valve.
 TASK 80-11-02-004-001-N00
 2.  Remove the Start Valve
______________________
 A.  References
 (1)  
AMM 24-22-00/201, Manual Control

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

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

 (4)  
AIPC 36-11-01 Fig. 5, AIPC 80-11-02 Fig. 1

 (5)  
WDM 80-11-11, 80-11-21, 80-11-31, 80-11-41

 (6)  
SSM 80-11-01, 80-11-02, 80-11-03, 80-11-04

 B.  Access
 (1)  
Location Zone
 412 Engine No. 1
 422 Engine No. 2
 432 Engine No. 3
 442 Engine No. 4

 (2)  
Access Panel 415 and 416 Thrust Reverser Halves - Engine No. 1 425 and 426 Thrust Reverser Halves - Engine No. 2 435 and 436 Thrust Reverser Halves - Engine No. 3 445 and 446 Thrust Reverser Halves - Engine No. 4

 C.  Procedure
 S 864-002-N00
 (1)  For the applicable engine, open these circuit breakers and attach the DO-NOT-CLOSE tags:
 (a)  P6 Main Power Distribution Panel
 1) 6G15 SCU ALT PWR ENG 1

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
DUCT STARTER LOWER 
2.  V351 START VALVE 
SEE  B 
SEE  A 
1.  DV351 CONNECTOR ELECTRICAL 
DUCT INTERCONNECT SEAL COUPLING 5. 4. 3.  MAIN GEARBOX 
　
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