S 034-048
 (7)  
Remove the lockwire between the strainer cap and the fuel strainer housing body.

 S 024-049

 (8)  
Remove the fuel strainer and the strainer cap from the fuel strainer housing body.

 S 024-050

 (9)  
Remove the fuel strainer and the washer from the strainer cap.

 S 034-095

 (10)
 Remove the O-ring from the strainer cap.

 S 494-088

 (11)
 Put the fuel container in position to collect the fuel that remains in the fuel-feed manifold.

 NOTE: The quantity of fuel that can drain from the fuel-feed
____ manifold when the components in the fuel strainer housing are removed is 20 gallons (76 liters).
 S 024-052
 WARNING:_______BE CAREFUL WHEN YOU REMOVE THE RETAINING RING. THE SPRING IS COMPRESSED AND COULD CAUSE THE POPPET GUIDE AND POPPET GUIDE RETAINER TO MOVE QUICKLY AND CAUSE INJURY.
 CAUTION: BE CAREFUL WHEN YOU REMOVE THE RETAINER AND POPPET GUIDE FROM
_______ THE HOUSING BODY. DAMAGE TO THE INTERNAL SURFACE OR THE THREADS OF THE HOUSING BODY COULD OCCUR.
 (12)
 Remove the retaining ring from the housing body.

 S 024-053

 (13)
 Remove the poppet guide retainer, poppet guide and attached parts and the spring from the fuel strainer housing body.

 (14)
 Remove the O-ring from the poppet guide retainer.

 S 024-054
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400 MAINTENANCE MANUAL
 S 024-055
 (15)
 Remove the retaining ring, spring retainer and spring from the poppet.

 S 024-056

 (16)
 Remove the poppet from the poppet guide.

 S 024-097

 (17)
 Remove the O-ring from the poppet.

 S 024-058
 CAUTION: DO NOT REMOVE THE O-RING OR GLIDE RING FROM THE POPPET GUIDE.
_______ THESE PARTS CAN ONLY BE REPLACED BY THE VENDOR.
 (18)
 Remove the O-ring from the poppet side of the poppet guide only.

 S 094-089

 (19)
 Remove the fuel container.

 TASK 28-15-12-404-059
 5. Fuel Strainer Housing Assembly Installation
___________________________________________
 A. Consumable Materials
 (1)  
D00128 Petrolatum - Technical, VV-P-236

 (2)  
D00169 Dry film lubricant

 B.
References

 (1)  
AMM 28-15-00/501, Fuel Scavenge System

 C.
Access

 (1)  
Location Zones
 131 Center Section Wing Box, Left
 132 Center Section Wing Box, Right

 D.
Procedure

 S 644-060
 (1)  
Lightly lubricate the new O-ring for the poppet guide with petrolatum.

 (2)
Install the O-ring in the bottom groove of the poppet guide.

 (3)  
Lightly lubricate the new O-ring for the poppet with petrolatum.

 (4)  
Install the O-ring on the poppet.

 (5)  
Put the poppet in the hole through the stem of the poppet guide.

 S 424-061
 S 644-062
 S 424-063
 S 424-064
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 03 Page 414 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 424-065
 (6)  
Install the spring, spring retainer and retaining ring on the stem of the poppet.

 S 644-066

 (7)  
Lubricate the O-ring for the poppet guide retainer with petrolatum.

 S 424-067

 (8)  
Put the spring in the poppet guide.

 S 424-068

 (9)  
Put the poppet guide and spring in the fuel strainer housing.

 NOTE: The stem of the poppet goes in last (spring goes in
　
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