4-9. Removing Safety Collar And Adjusting Boom
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1 Locking Knob
Tighten knob to prevent boom movement. Loosen knob to allow boom movement. Change knob po- sition to limit upward movement.
Pull boom down slightly and re- move safety collar. Boom should balance in any position from hori- zontal to 60 degrees above hori- zontal. If necessary, adjust boom as follows:
2Threaded Rod
3Jam Nut
Loosen jam nut and turn threaded rod until boom balances. Tighten jam nut. Be sure several full threads are through yoke to prevent boom falling.
4 Yoke
Retain safety collar for use in disas- sembling or moving boom.
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Tools Needed: | Increasing Spring | Decreasing Spring | |
Pressure For A Heavy | Pressure For A | ||
Gun | Lighter Gun | ||
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4-10. Gun Recommendation Table
Process | Gun |
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GMAW − Hard or Cored Wires | Roughneck |
| 600 Amp. |
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FCAW − | |
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4-11. Wire Type, Size, And Feed Speed Capability Table
Motor Speed | Wire Type | Wire Size | Feed Speed Capability | ||
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Standard | All | .023 To 5/64 in (0.6 To 2 mm) | 50 To 780 ipm (1.3 To 19.8 mpm) | ||
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Standard | All | 3/32 To 7/64 in (2.4 To 2.8 mm) | 50 To 700 ipm (1.3 To 17.8 mpm) | ||
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Standard | All | 1/8 in (3.2 mm) | 50 To 300 ipm (1.3 | To 7.6 mpm) | |
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Optional High | All | .023 To 5/64 in (0.6 To 2 mm) | 92 To 1440 ipm (2.3 | To 35.6 mpm) | |
Speed | |||||
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