-
for aluminum-alloy tube, use the applicable drawbar, expander, solid back-up washers and thrust bush. (Ref. Fig. 228/TASK 20-23-11-991-016, 230/TASK 20-23-11-991-018)
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Length of Straight Tube Required for Swaging Figure 226/TASK 20-23-11-991-021
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Squaring, Deburring and Chamfering of the Tube End Figure 227/TASK 20-23-11-991-022
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Internal Swaging Tooling Figure 228/TASK 20-23-11-991-016
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Assembly Components Figure 229/TASK 20-23-11-991-017
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Assembly Components Figure 230/TASK 20-23-11-991-018
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NOTE : For corrosion-resistant steel tube which are dia. 1/4, 5/16 or
____
3/8 in., two types of tools are available.
(Ref. Fig. 229/TASK 20-23-11-991-017)
(2)
Install the internal tool components on the draw bar and obey these precautions:
(a)
Solid-type back-up washers You must use the solid-type back-up washers so that they agree with the I.D. of the tube. Use a 57.2.19 gage to do this. Do not use the washers with an O.D. immediately smaller than the
I.D. of the tube. If you do, it will be difficult to remove the
tube after the swaging operation.
You must keep a clearance from 0.10 mm (0.0039 in.) to 0.15 mm
(0.0059 in.) between the washers and the tube.
The inner chamfers must point away from the 57.2.15 expander.
(b)
Split-type back-up washers 57.2.32.
You must replace these washers when:
-the increase in diameter during each swaging operation becomes permanent,
-it is difficult to install or remove the washers from the tube.
(c)
Expander You must replace the expander as soon as it is difficult to install or remove the tube.
(d)
Tapered back-up ring The cone of the tapered back-up ring 57.2.33 must always point to the expander 57.2.31.
(e)
Thrust bush 57.2.17 The shoulder of the thrust bush 57.2.17 must point to the drawbar to go into the end of the tube.
(3)
Determine the external tool components below, applicable to hold the tube and fitting during the swaging: (Ref. Fig. 231/TASK 20-23-11-991-019, 232/TASK 20-23-11-991-020)
-two jaws and one die (the jaws and the die must agree with the OD
of the tube and the fitting (sleeve or union), - one die bolster, - one attach nut, - one 57.2.10 adapter (to attach the drawbar to the swage machine).
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Tool Assembly for Sleeve Figure 231/TASK 20-23-11-991-019
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Tool Assembly for Union Figure 232/TASK 20-23-11-991-020
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NOTE : Make sure that you can adapt the tool components on the swage
____
machine (manual or automatic).
(4) Connect the hose between the pump and the swager of the swage machine.
NOTE : You can put the swager in the horizontal or vertical position
____
as is necessary to swage.
(5)
Install the drawbar assembly on the die and on the adapter. Tighten the drawbar on the adapter.
(6)
Install the drawbar assembly and the die on the swager. Tighten the drawbar by hand.
(7)
Install the attach nut of the die.
(8) Apply a layer of COMMON GREASE (Material No. 04-012) on the expander. Subtask 20-23-11-917-058
C. Installation of the Sleeve and the Union on the Tube NOTE : For tubes in aluminum alloy, you must swage after you apply the
____ Alodine and before you apply the paint. If you paint the tubes before you swage them, do not paint the section you will swage along 50 +5 -5 mm (1.9685 +0.1968 -0.1968 in.) and touch-up the paint after the swaging operation.
NOTE : You must do these operations in clean conditions so that unwanted
____
matter or dust does not fall on the sealant.
(1) Apply a layer of COMMON GREASE (Material No. 04-012) into the tube end to swage.
NOTE : Put the sleeve nut in position on the tube before you install
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