Jiffy-Tap

Installing a New Lead Screw:


without Quick-Change option

  1. Remove old lead screw. (See separate instructions)
  2. Screw the new lead screw nut and housing assembly on the spindle to about the same position as the old nut and housing on the spindle just removed.
  3. Insert the complete spindle assembly into the Jiffy-Tap body, lifting the slide bar slightly so the fork on the slide bar can clear the disc on the spindle. Slightly rotate the spindle to engage the spline.
  4. Lower the fork on the slide bar to engage the disc on the spindle. To check for engagement, move the spindle in and out. The slide bar should move with it.
  5. Position the limit switch plate; insert and tighten 4 screws.
  6. Install and tighten the 3 screws, which hold the lead screw nut housing to the Jiffy-Tap body. Caution: As you tighten these screws, be careful that the rear limit switch actuating bolt does not jam into and damage the rear switch, and that the spindle does not bottom out against the end of the hydraulic motor shaft, in case the lead screw nut was not positioned correctly when it was installed.
  7. Turn on electric power to the Jiffy-Tap unit.
  8. Cycle the unit under power, jogging it to see that the limit switch bar is operating and that spindle reversal takes place at the desired position.
  9. Set the position of the forward limit switch actuating bolt for the desired tapping depth and lock with the jam nut. The rear switch actuating bolt has been factory set to leave about 1/16" gap between the lead screw spindle and the end of the hydraulic motor shaft when spindle is retracted. It can be adjusted to leave more gap, if desired, but should not be set to allow the spindle to bump the motor shaft.
  10. Replace the switch cover.