D. Prepare to Remove the Aft Heat Shield Blanket
 S 012-022-B00
 (1)  
Remove the turbine exhaust sleeve (AMM 78-11-01/401).

 (2)  
Open the access panels (AMM 54-31-01/401).

 S 012-023-B00
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A 737-300/400/500MAINTENANCE MANUAL
 S 022-024-B00
 (3)  
Remove the 19 screws from the blanket and doubler.

 S 022-026-B00

 (4)  
Remove the blanket and doubler.

 S 212-025-B00

 (5)  
Examine the structure for cracks, nicks, dents or other damage (SRM 54-50-02).

 (a) If you find these conditions, repair the firewall.
 TASK 54-52-00-412-028-B00
 4. Aft Heat Shield Blanket Installation
____________________________________
 A. General
 (1)  This blanket is on the bottom side of the strut, forward of the spar fitting (NSTA 276.60).
 B. References
 (1)  
AMM 54-31-01/401, Nacelle Strut Access Panels

 (2)  
AMM 78-11-01/401, Turbine Exhaust Sleeve

 C. Access
 (1)  
Location Zone
 500 Left Nacelle
 600 Right Nacelle

 (2)  
Access Panel
 5723 Access Door - Left Nacelle
 5823 Access Door - Right Nacelle
 5724 Access Door - Left Nacelle
 5824 Access Door - Right Nacelle
 5725 Access Door - Left Nacelle
 5825 Access Door - Right Nacelle

 D. Procedure
 S 422-030-B00
 (1)  
Put the blanket on the strut.

 (a)  Make sure the blanket is properly positioned around the drain tubes.

 (2)  
Put the doubler on the blanket.

 (3)  
Install the screws.

 S 422-031-B00
 S 422-032-B00
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A
737-300/400/500MAINTENANCE MANUAL
 E. Put the Airplane Back to Its Usual Condition
 S 412-033-B00
 (1)  Install the turbine exhaust sleeve (AMM 78-11-01/401).
 S 162-042-B00
 CAUTION: MAKE SURE YOU REMOVE ALL TOOLS AND UNWANTED MATERIALS FROM THE
_______ STRUT CAVITIES. IF OBJECTS ARE IN THE STRUT COMPARTMENTS, THEY CAN STOP THE REMOVAL OF THE FLUIDS THROUGH THE STRUT DRAINS. IF YOU DO NOT REMOVE THE UNWANTED MATERIALS, YOU CAN CAUSE DAMAGE TO THE STRUT.
 (2)  
Remove all tools and unwanted materials from the strut cavities before you install the access doors.

 S 412-035-B00

 (3)  
Install the access doors on the strut (AMM 54-31-01/401).

 TASK 54-52-00-302-037-B00
 5.  Seal the Firewall Disconnect Fitting on the Fan Cowl Support Beam_________________________________________________________________
 A. General
 (1)  Do this task after you replace the hydraulic quick-disconnect fitting.
 B. Consumable Materials
 (1)  
A00521 Sealant, Dow Corning 93-006-6

 (2)  
A00803 Sealant (Fire), BMS 5-63

 C. References
 (1)  
AMM 54-32-01/401, Forward Fairing

 (2)  
AMM 71-00-02/401, Power Plant

 D. Access
 (1)  Location Zone
 500 Left Nacelle
 600 Right Nacelle

 E. Procedure
 S 412-038-B00
 (1)  
Remove the forward fairing (AMM 54-32-01/401).

 S 392-039-B00

 (2)  
Apply BMS 5-63 sealant 0.10-0.15 to the following areas on the exterior of the firewall.

 (a)  
Sealant should cover the fitting flange.

 (b)  
Between the flange of the fitting and the firewall where the heat sheild blanket does not cover the firewall.
　
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