(3)  
Get access to the APU sump drain valve on the keel beam.

 (4)  
Remove the screws, washers and nuts from the APU sump drain valve.

 S 014-007
 S 034-041
 NOTE: Do not discard the washers and nuts.
____
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 28-25-09
 ALL  ú ú 02 Page 401 ú May 28/99

A
757
MAINTENANCE MANUAL

APU SUMP DRAIN VALVE
SEE A
ADAPTER  SCREW, WASHER, NUT
0-RING (2 LOCATIONS)
APU SUMP DRAIN VALVE
AIRPLANE STRUCTURE
SPACER (2)
APU SUMP DRAIN VALVE
A
APU Sump Drain Valve Installation Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-25-09
 ALL  ú ú 02 Page 402 ú May 28/99

A
757 MAINTENANCE MANUAL
 S 024-032
 (5)  
Disconnect the APU sump drain valve from the adapter.

 S 034-008

 (6)  
Remove and discard the O-ring.

 S 024-009

 (7)  
Remove the APU sump drain valve.

 TASK 28-25-09-404-033
 3.  Install the APU Sump Drain Valve (Fig. 401)________________________________
 A. Consumable Materials
 (1)  
A00247 Sealant (BMS 5-95)

 B.
References

 (1)  
AMM 32-00-15/201, Landing Gear Door Locks

 (2)  
AMM 51-31-01/201, Seals and Sealing

 C.
Access

 (1)  
Location Zone
 149 Aft Section of Keel Beam

 D.
Install the APU Sump Drain Valve

 S 434-017
 (1)  
Install a new O-ring on the APU sump drain valve.

 S 424-018

 (2)  
Connect the APU sump drain valve to the adapter.

 S 214-019

 (3)  
Make sure the screw holes of the APU sump drain valve align with the holes in the airplane structure.

 S 434-020

 (4)
Put spacers between the APU sump drain valve and the keel beam.

 S 394-021

 (5)  
Apply sealant in the space between the APU sump drain valve and the keel beam (AMM 51-31-01/201).

 S 424-022

 (6)  
Install the screws, washers, and nuts to attach the APU sump drain valve to the keel beam.
　
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