(3)  
Make sure the groove on the magnetic plug is clean.

 S 432-019-C00

 (4)  
Install a new O-ring, lubricated with engine oil, in the groove on
 the magnetic plug.

 S 432-020-C00

 (5)  
Push the spring-loaded pin and install the scavenge screen on the
 magnetic plug.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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S 822-021-C00
 (6)  
Make sure the spring-loaded pin engages the hole in the scavenge screen.

 S 432-022-C00

 (7)  
Install the MCD removal/installation tool on the magnetic plug.

 (a)  
Push the spring-loaded lever to retract locking pin.

 (b)  
Install the end of the tool with slots on the handle on the magnetic plug.

 (c)  
Release the spring-loaded lever to engage the locking pin through the hole in the magnetic plug handle.

 (d)  
Pull down on the tool to make sure it is correctly engaged.

 S 422-023-C00
 (8)  Carefully put the MCD into the lubrication unit.
 NOTE: Make sure the MCD goes in straight to prevent damage to the
____
 scavenge screen.

 S 822-024-C00
 (9)  
Align the bayonet pins with the slots of the bayonet housing on the lubrication unit.

 S 422-025-C00

 (10)
 Push the magnetic chip detector in and turn it clockwise one quarter turn.

 (a)  Make sure the pin moves into the locked position.
 S 212-026-C00
 CAUTION: MAKE SURE THAT THE CHIP DETECTOR PLUGS ARE CORRECTLY INSTALLED
_______ WITH THE TWO BAYONET PINS ENGAGED. MAKE SURE THAT THE RED STRIPES ON EACH CHIP DETECTOR PLUG (WITH CFMI SB 79-012) ARE CLEARLY SEEN THROUGH THE SLOTS OF THE CHIP DETECTOR HOUSING. INCORRECT INSTALLATION CAN CAUSE OIL LOSS DURING ENGINE OPERATION AND A POSSIBLE ENGINE FAILURE.
 (11) Do a check of the magnetic chip detector for correct installation as follows:
 (a)  The three plug handles must be aligned and in the locked position.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(b)  ENGINE POST-CFMI-SB 79-012; Make sure you can see the red marks on the plug through the slots of the bayonet housing.
 NOTE: CFMI SB 79-012 introduced MCD plugs with colored
____ markings to help with correct installation.
 S 032-027-C00
 (12) Push the spring-loaded lever and pull down on the MCD removal/installation tool to remove it.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
CAUTION:_______ MAKE SURE THE RETENTION BAR IS CLOSED.  IF THE RETENTION
 BAR IS NOT CLOSED, AN INCORRECTLY INSTALLED MCD CAN EJECT,
 AND CAUSE OIL LOSS DURING ENGINE OPERATION, AND A POSSIBLE

 ENGINE FAILURE.
 (a)  ENGINES POST-CFMI-SB 79-054; ENGINES POST-CFMI-SB-79-055; Move the retention bar down until it snaps into its self-locking position (Fig. 201).
 S 612-028-C00
 (13)
　
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