S 862-036

 (4)  
Release pressure from the hydraulic reservoirs (AMM 29-09-00/201).

 S 022-052

 (5)  
If it is necessary, remove the case drain filter before removing the filter element (AMM 29-15-91/201).

 S 022-037

 (6)  
Remove the filter bowl from the filter head.

 (a)  Remove the filter bowl with the filter element.
 S 022-038
 (7)  
Remove the filter element.

 S 212-039

 (8)  
Examine the filter element for metal contamination.

 S 212-044

 (9)  
Examine the filter bowl for metal contamination.

 S 902-048

 (10)
 If the filter element or filter bowl contains metal contamination, do these steps:

 (a)  
Replace the EDP (AMM 29-15-11/401).

 (b)  
Flush the A or B system hydraulic lines (AMM 29-15-00/201).

 S 162-040
 (11)
 Clean the filter bowl.

 S 962-041

 (12)
 Replace the filter element.

 TASK 29-15-91-402-001
 3. EDP Case Drain Filter Element Installation
__________________________________________
 A. Consumable Materials
 (1)  
D00567 Skydrol Assembly Lube - MCS 352

 (2)  
D00568 Fluid - Hydraulic, BMS 3-11

 B. References
 (1)  AMM 71-00-00/201, Power Plant
 C. Access
 (1)  Location Zone 309 Wing Trailing Edge Inboard Flap and Spoilers, LH 409 Wing Trailing Edge Inboard Flap and Spoilers, RH
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 29-15-91
 ALL  ú ú 01 Page 204 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 D. Procedure
 S 642-023
 (1)  
Apply assembly lube or hydraulic fluid to the backup ring, O-ring, and the backup ring in the filter head groove.

 S 432-024

 (2)  
Install the backup ring, O-ring, and backup ring in the filter head groove.

 S 642-025

 (3)  
Apply assembly lube or hydraulic fluid to the O-ring.

 S 432-026

 (4)  
Install the O-ring in the filter element groove.

 S 422-027

 (5)  
Install the filter element in the filter bowl.

 S 642-028

 (6)  
Apply assembly lube or hydraulic fluid to the threads of the filter bowl.

 S 422-029

 (7)  
Install the filter bowl into the filter head.

 (a)  
Tighten the filter bowl to 96-120 pound-inches.

 (b)  
If it is necessary, install the case drain filter (AMM 29-15-91/201).

 S 862-031
 (8)  
Pressurize the hydraulic reservoir (AMM 29-09-00/201).

 S 862-032

 (9)  
Motor the applicable engine to pressurize the hydraulic system (AMM 71-00-00/201).

 S 862-033

 (10)
 Make sure the hydraulic pressure becomes stable between 2900 and 3100 psi.

 (11)
 Stop the engine (AMM 71-00-00/201).

 S 862-035
 TASK 29-15-91-002-012
 4.  EDP Case Drain Filter Removal (Fig. 201)_____________________________
 A. Standard Tools and Equipment
 (1)  Container to catch hydraulic fluid
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 29-15-91
 ALL  ú ú 02 Page 205 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 B.
C.
D.
A
737-300/400/500MAINTENANCE MANUAL
References
 (1)  
AMM 12-40-00/201, Cleaning and Washing

 (2)
AMM 29-09-00/201, Hydraulic Reservoir Pressurization SystemAccess

 (1)  
Location Zone 309 Wing Trailing Edge Inboard Flap and Spoilers, LH 409 Wing Trailing Edge Inboard Flap and Spoilers, RH

Procedure
 S 862-004
 (1)  Get access to the case drain filter.
　
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