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A
737-300/400/500MAINTENANCE MANUAL
 (7)  S 238-272Penterant check welded area (CMM 20-20-02).
 (8)  S 118-273Rinse with solvent, series 88 (AMM 20-30-88/201).
 (9)  S 798-267Hydrostatically test repaired tube to 240 psig per BAC5001-2. shall be no leakage. There
 S 378-268

 (10)
 Finish repaired area with appropriate protective coatings as required to meet original tube finish requirements.

 S 438-269

 (11)
 Install the repaired fuel tube per applicable maintenance manual procedure.

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A 737-300/400/500MAINTENANCE MANUAL

WRINKLE MEASUREMENTS

Permitted Ovality and Wrinkle of Hydraulic and Fire Extinguishing Tube Bends
Figure 801 (Sheet 1)

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L08037
A 737-300/400/500MAINTENANCE MANUAL
SYSTEM OPERATING PRESSURE  TUBE OD  TUBE MATERIAL  (Inches) HEIGHT ALLOWABLE WRINKLE 1 Specified OD)* (Percent of ALLOWABLE OVALITY 
Liquid: 1000 PSI To 3000 PSI (Including Return Lines)  All Sizes  Steel Stainless  0.010  5 
Aluminum  0.010  5 
Titanium 3AL-2.5V  None Visible  3 
Pneumatic And Oxygen: 160F or Temperature Above 1500 PSI Pressure Above  All Sizes  Steel Stainless  0.010  5 
Pneumatic and Oxygen Temperature Less 1500 PSI Pressure Less Than Than 160F or 1000 PSI Pressure Less Than Systems: Other Liquid Systems:  Less Than 1.0  Stainless Steel  0.040  10 
Aluminum Alloy & Copper  0.020  10 
1.0 Or Over, Less Than 2.0 Stainless Steel  0.060  10 
Alloy & Copper Aluminum  0.030  10 
2.0 Or Over, Less Than 3.0  Stainless Steel  0.080  5 
Alloy & Copper Aluminum  0.040  5
3.0 Or Over  Stainless Steel  0.100  5
Alloy & Copper Aluminum  0.050  5

* Specified Diameter = Drawing Specified Tube Diameter
 OD MAX - OD MIN

1 PERCENT (OVALITY) =  X 100
OD SPECIFIED*
____ OD MEASURED IN SAME PLANE.)

(NOTE:
NOTE:  FOR ADDITIONAL INFORMATION ON TUBE BENDING, SEE SAE AIR 5378 "AIRCRAFT TYBE BENDING METHODS, TECHNIQUES AND TOOLING".
Permitted Ovality and Wrinkle of Hydraulic and Fire Extinguishing Tube Bends
Figure 801 (Sheet 2)

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L08092
A 737-300/400/500MAINTENANCE MANUAL

REPAIR METHOD - RECONNECTABLE WITH FLARELESS FITTING SLEEVES
TABLE A

Tube Material and Fitting Selection Tables
Figure 802 (Sheet 1)

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L08189
A 737-300/400/500MAINTENANCE MANUAL

* SEE TABLE D FOR ASSOCIATED APPROVED FITTINGS.
REPAIR METHOD - RECONNECTABLE WITH FLARELESS FITTING SLEEVES TABLE A
Tube Material and Fitting Selection Tables
Figure 802 (Sheet 2)

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