TUBE CUTOUT LENGTHS IN INCHES

Tubing Repair with Unions - Short Damage
Figure 805 (Sheet 2)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
L08675
A 737-300/400/500MAINTENANCE MANUAL
MS FLARELESS

NOTE: REFER TO FIG. 810 (SHEET 1) FOR THE LENGTHS L1 AND L2.
Tubing Repair by End Replacement
Figure 806

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L09194
A 737-300/400/500MAINTENANCE MANUAL
TUBE CUTOUT LENGTH TO USE
DAMAGED BACU24AB UNION
CUTOUT LENGTH A FOR REPLACING

BACU24AB UNION WITH MS21924 BULKHEAD UNION AND A ROLLER SWAGED BACS13BX SLEEVE
A

NOTE: REFER TO FIG. 808 FOR THE LENGTHS A,B AND C. COUPLING NUTS NOT SHOWN.
Tube Cutout Lengths for
Replacement of Damaged BACU24AB Swage Unions
Figure 807 (Sheet 1)

L09198
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A 737-300/400/500MAINTENANCE MANUAL
MS21924 OR
EQUIVALENT

UNION AND A PRESET BACS13AP SLEEVE

Tube Cutout Lengths for
Replacement of Damaged BACU24AB Swage Unions
Figure 807 (Sheet 2)

L09213
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A 737-300/400/500MAINTENANCE MANUAL

Repair Method:  You need to replace a damqged BACu24AB swage union. You will cut out the fitting and
replace it with a BACS13BX or BACS13AP sleeve, a coupling nut and MS21924 flareless
bulkhead union of the same or equivalent material as the union you are replacing.
Check Fig. 802 for sleeve/tube material limitations.

To make the repair (Refer to Fig. 807):
Step 1:  Cut the tube adjacent to the damaged union - to dimension A, B, or C depending on the sleeve and sleeve installation method you plane to use.
Step 2:  Slide a flareless coupling nut on the tube. Follow the procedures for presetting a BACS13AP sleeve or swaging a BSCS13BX sleeve to the tube end.
Step 3:  Install the MS21924 flareless bulkhead union between the two tube ends and tighten the nuts.
Procedure to Replace BACU24AB Union
Figure 808

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L09216
A 737-300/400/500MAINTENANCE MANUAL

NOTE: REFER TO FIG. 810 FOR THE LENGTHS L1 AND L2.
Tubing Repair by Section Replacement
Straight or Bend - Extensive Damage
Figure 809

L09306
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