ACCESSORIES | ||
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B.1For. Remove3/32 (2the.4mm)itemsWirelisted in Step plus:
• The drive roll key “A”
• The drive roll spacer
The set screw that holds the drive roll spacer NOTE: in place is accessible once the idle roll assem-
bly is removed.
2. Oil or grease the O.D. of the new shorter drive roll spacer (E) and place it on the output shaft. Push it back as far as it will go and tighten the set screw.
3. Place the new longer key (F) in the keyway.
4. Place the outer, center and second outer drive rolls (A) on the shaft. Replace the clamping washer and the locking nut and tighten securely.
FIGURE C.17
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| Key |
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| Outer Drive Rolls | |
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| Drive Roll |
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| Clamping |
| Locking |
| Center |
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Output |
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Spacer |
| Washer |
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Drive Roll |
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Shaft |
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See Figure C.17.
C. Nozzle Installation
1. install the new idle roll arm (C) using the pin and set screw from the original assembly. .
2. Replace the tension spring and screw and adjust the tension screw to
3. Insert one of the guide tubes (B) in the top of the faceplate. Line up the holes in the guide tube with the grooves in the drive rolls to insure proper wire feed
If using the K281 Twinarc Wire straightener, NOTE: follow the supplied instructions and skip to
Step 5.
4. Put the dual ingoing wire guide (D) over the ingo- ing guide tube and lock it down with the two “L” shaped clamps from the wire straightener.
5. Insert the two long insulated wire guides (2) into the Twinarc nozzle (1) making sure that they are seated in the holes in the mounting block (7). Place the contact tip (4) or tip holder (5) into the end of the nozzle making sure the tubes fit into the holes. Lock it securely in place with the lock- ing collar (3). See Figure C.16.
For applications that require staggered or NOTE: cross seam wire placement rather than
proper
For overlay applications a special “side by side” tip holder (part# S17728) that accepts standard contact tips is available.
6. Place the other guide tube (B) into the outgoing side of the faceplate. Place the nozzle over the guide tube and lock it in place with the two sock- et head screws
7. Bolt the electrode cable(s) of the proper size and number, to the connection tab (6) using the hard- ware provided. If using multiple cables, use both sides of the tab.
E. Maintenance
Replace the Contact Tip(s) when they no longer pro- vide accurate wire placement or good electrical con- tact. Before installing the new contact tip or tip holder:
1. Make sure that the threads and bottom surface of the nozzle are clean and bright. These are cur- rent carrying surfaces and must be clean.
2. Check that the locking collar is free of foriegn material. A coating of locally available “anti- seize” compound or graphite grease will help insure longer thread life.
3. Before replacing the contact tip or tip holder: a. Inch the wire past the end of the nozzle.
b. Slide the long wire guides on to the wire making sure they are properly seated in the mounting block (see Figure C.16).
c. Slide the new contact tip or tip holder over the wires again making sure that thewire guides are properly seated
d. Replace the locking collar and tighten securely
