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(2) Bond the sleeve or the union on the tube. Clean the external surface of the tube end with CLEANING AGENTS (Material No. 11-003).
(a)
Application of the activator When you apply BONDING AND ADHESIVE COMPOUNDS (Material No. 08-009) mask the tube ends to prevent contamination. Apply BONDING AND ADHESIVE COMPOUNDS (Material No. 08-009) in the area where you swage with a brush. If the product is supplied in an aerosol can, spray it on.
(b)
Apply this material to the internal side of the union that you must swage.
(c)
Remove the unwanted material.
(d)
After 10 minutes apply BONDING AND ADHESIVE COMPOUNDS (Material No. 08-024) to the end of the tube that you must swage and make sure it does not go into the tube.
NOTE : Apply sufficient material to the surfaces that you must
____
seal.
(e)
Use force to install the union on the tube and turn the tube to equally apply BONDING AND ADHESIVE COMPOUNDS (Material No. 08-024).
(f)
Remove the unwanted material when the union is fully installed on the tube.
NOTE : Swage the tube before the bonding and adhesive compounds
____
are dry.
Subtask 20-23-11-917-057
D. Swage the Tube
(1)
Put the tube assembly with the sleeve (or the union) on the drawbar and the die. Fully push the tube and the sleeve (or the union) into the swage tool. (Ref. Fig. 231/TASK 20-23-11-991-019, 232/TASK 20-23-11-991-020)
(2)
Install the two jaws on the die and the tube assembly.
(3)
Lock the attach nut.
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(4)
Tighten the two nuts and make sure that the threads do not cross. TORQUE the nuts to 3 m.daN (22.12 lbf.ft).
(5)
Tighten the valve installed on the right side of the gage.
(6)
Slowly operate the pump until you get the specified pressure: (Ref. Fig. 233/TASK 20-23-11-991-023, 234/TASK 20-23-11-991-024)
(7)
Loosen the valve installed on the right side of the gage.
(8)
Remove the tube from the swage tool. NOTE : After 24 hours, do the pressure test or degrease the tube.
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(9) Carefully clean the tube with CLEANING AGENTS (Material No. 11-003). Subtask 20-23-11-917-056
E. Check of the Swage
(1) Make sure that the swage obeys the dimension acceptance criteria. (Ref. Fig. 235/TASK 20-23-11-991-025, 236/TASK 20-23-11-991-026, 237/TASK 20-23-11-991-027)
(a)
You must reject the swage if:
-
the diameters DIA D1, DIA D2 or DIA D3 are higher than the maximum tolerance,
-
the wave deformations A are higher than the maximum tolerance,
-
the dimension B is lower than the minimum tolerance.
(b)
You can re-swage the tube if:
-the wave deformations A or the diameters DIA D1, DIA D2 or DIA D3 are lower than the minimum tolerance.
NOTE : To re-swage, you can increase the maximum swaging pressure
____
by 10 %.
(c) You can remove material from the end of the tube if:
-the tube is too long and you cannot install it.
NOTE : Do not decrease the dimension B more than 0.5 +0 +0.5 mm
____
(0.0196 +0.0000 +0.0196 in.).
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Swaging Pressures with Hand Swager Models 5175 and 5720 for NSA 855012 or NSA
855010
Figure 233/TASK 20-23-11-991-023
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Swaging Pressures with Hand Swager Models 5175 and 5720 for NSA 855034 Figure 234/TASK 20-23-11-991-024
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Dimension Acceptance Criteria for NSA 855012 Sleeve Figure 235/TASK 20-23-11-991-025
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Dimension Acceptance Criteria for NSA 855034 Sleeve Figure 236/TASK 20-23-11-991-026
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Dimension Acceptance Criteria for NSA 855010 Unions Figure 237/TASK 20-23-11-991-027
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(2) If there are marks on the tube, measure the depth of these marks.
NOTE : You can possibly see two types of marks on the tube after the____ 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320飛機維護手冊 AMM STANDARD PRACTICES-AIRFRAME(34)
