Grizzly G0740 Apron Threading Controls, Thread Dial, Nut when required and prevent an apron crash

Apron Threading Controls

The half nut lever engages the carriage with the leadscrew, which moves the carriage and cutting tool along the length of the workpiece for thread- ing operations (see Figure 80).

Important: Make sure the feed selection lever is in the disengaged (middle) position before attempting to engage the half nut.

Feed Selection	Half Nut
Lever	Lever

Thread Dial

The numbers on the thread dial are used with the thread dial chart to show when to engage the half nut during inch threading. The thread dial gear must be engaged with the leadscrew for this to work. Loosen the knurled knob on the thread dial, pivot the dial gear toward the leadscrew so that it properly meshes with the leadscrew threads, then re-tighten the knob, as shown Figure 81.

Leadscrew

Dial Gear

Knurled

Knob

Figure 81. Thread dial engaged with the

Cross Slide

Disengaged

Carriage

Feed Selection

Lever

Disengaged

Halfnut

Lever

Engaged

leadscrew.

When threading, we recommend using the slowest speed possible and avoiding deep cuts, so you are able to disengage the half

Figure 80. Apron threading controls.

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nut when required and prevent an apron crash!

Model G0740 (Mfg. Since 11/12)