S 016-012-B00

 (2)  
Remove the strut access door on the left side of the engine.

 S 016-013-B00

 (3)  
Remove the nacelle strut fairing access panel.

 S 866-015-B00

 (4)  
Find the drain exit in the heat shield assembly.

 S 866-016-B00

 (5)
Put a dry container below the heat shield assembly drain exit.

 S 216-017-B00

 (6)  
Do the drainage check as follows:

 (a)  
With a funnel and hose, put 2 U.S. gallons (256 fluid ounces) of clean tap water into the forward end of the strut midspar.

 (b)  
Apply the water approximately 50 percent on the two sides (left and right sides) of the strut midspar.

 (c)  
Stop approximately 6 minutes.

 (d)  
Make sure that the water collected at the drain exit is no less than 240 fluid ounces. 1) If not, examine for the sources of leakage as follows:

 a) Examine the strut area. b) Examine the strut drain line.
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A 737-300/400/500MAINTENANCE MANUAL
 2) Repair the sources of leakage, if it is necessary.
 (e)  Make sure the strut midspar area is clear of the blockage and contamination.
 S 866-018-B00
 (7)  
Remove all the water that stay in the strut.

 S 866-019-B00

 (8)  
Make sure all areas in the strut midspar are clean.

 S 416-020-B00

 (9)  
Install the nacelle strut fairing access panel.

 S 416-021-B00

 (10)
 Install the strut access door to the left side of the engine.

 S 416-022-B00

 (11)
 Install the strut access door to the top of the engine.

 TASK 54-11-00-206-023-B00
 4. Strut Midspar Closeout Web Drain Check
______________________________________
 A. Equipment
 (1)  
Funnel and Hose

 (2)  
Container - Minimum of 1 U.S. quart (32 fluid ounces) of water

 B. Access
 (1)  
Location Zone
 ZONE 5 LEFT NACELLE
 ZONE 6 RIGHT NACELLE

 (2)  
Access Panel 5742L AFT STRUT FAIRING (INBOARD) - LEFT NACELLE 5842R AFT STRUT FAIRING (INBOARD) - RIGHT NACELLE

 C. Procedure
 S 016-025-B00
 (1)  
Remove the fairing at the inboard forward end of the strut fairing.

 (2)
Find the drain exit in the heat shield assembly (Fig. 601).

 S 866-026-B00
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A 737-300/400/500MAINTENANCE MANUAL
 S 866-027-B00
 (3)
Put a dry container below the heat shield assembly drain exit.

 S 216-028-B00

 (4)  
Do the drainage check as follows:

 (a)  
With a funnel and hose, put 1 U.S. quart (32 fluid ounces) of clean tap water to the aft face of the midspar closeout web.

 (b)  
Stop approximately 3 minutes.

 (c)  
Make sure that the water collected at the drain exit is no less than 26 fluid ounces. 1) If not, examine the sources of leakage as follows:

 a) Examine the strut area. b) Examine the strut drain line. 2) Repair the sources of leakage, if it is necessary.

 (d)  
Make sure the strut closeout web is clear of the blockage and contamination.

 S 866-029-B00
 (5)  
Remove all the water that stay in the strut.

 S 866-030-B00

 (6)  
Make sure all areas in the strut closeout web are clean.

 S 416-031-B00

 (7)  
Install the fairing to the inboard forward end of the aft strut engine.