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MAINTENANCE 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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MAINTENANCE MANUAL
DAMAGED TUBE
ASSEMBLY LENGTH L1
NOTE: REFER TO FIG. 810 FOR THE LENGTHS L1 AND L2.
Tubing Repair by Section Replacement
Straight or Bend - Extensive Damage
Figure 809
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FITTINGS USED FOR REPAIR TUBE ASSEMBLY L2 CUTOUT LENGTH FORMULA 1
FLARELESSPART NO. SLEEVE SWAGE METHOD UNION PART NO. SECTION FOR TUBE END SECTION TUBE CENTER FOR
BACS13BX Harrison Portable Swagers 5175 and 5720 or Swager 5570 Stationary Equivalent Equivalent MS21902 or 2 1 L1 Minus 2Z L1 Minus 2P L1 Minus 2P L1 Minus 2H L1 Minus 2Z 2 1 L1 Minus 2Z L1 Minus 2P L1 Minus 2P L1 Minus 2H L1 Minus 2Z
BACS13BX Swage Kit 6633K01 Harrison Roller
BACS13AP Hand or Machine Preset
CRYOLIVE Assembly 921721 N/A
35211 Swage Machine Harrison Roller 6777
BACS13BX Harrison Portable Swagers 5175 and 5720 or Swager 5570 Stationary Equivalent Permaswage Cryofit H-Fitting 1 2 L1 Minus (Z +0.10) L1 Minus (P+0.10) L1 Minus (H+0.10) L1 Minus (P+0.10) L1 Minus 2Z 2 N/A L1 Minus 2Z
BACS13BX Swage Kit 6633K01 Harrison Roller
BACS13AP Preset Hand or Machine
CRYOLIVE Assembly 921721 N/A
35211 Swage Machine Harrison Roller 6777
N/A N/A H-Coupling Cryofit Permaswage Rynglok L1 Minus 0.20
Procedure to Find the Tube Cutout Length L2
Figure 810 (Sheet 1)
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Example: You have made a decision that to repair tube damage: You will remove a tube end section
and replace it with a prefabricated tube assembly as shown on Fig. 806.
To make the repair tube end section, you roller swaged BACS13BX flareless sleeves to
the tube ends and tightened then to one end of a MS21902 flareless union.
Step 1: Measure the repair tube assembly total length L1 (Fig. 806).
Step 2: Observe the cutout length L2 formula (L1 minus 2Z ) in above table.
1
Step 3: find the Z value for tube size in Fig. 811.
1 Step 4: Subtract (Z times 2) from the measured L1 for cutout length L2.
1
1 REFER TO FIG. 811 FOR VALUES FOR H, P, Z AND Z .
1 2
Procedure to Find the Tube Cutout Length L2
Figure 810 (Sheet 2)
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