Grizzly g0749, g0746 owner manual Spindle Break-In, Recommended Adjustments

16.Move the spindle lever to the middle (OFF) position. Open the end-gear cover on the left side of the headstock. This activates a safety switch that should prevent the spindle from starting while this cover is open.

Note: Remove the cap screw on the front of the cover to open it.

17.stand away from all the exposed gears on the side of the headstock, and attempt to start spindle rotation. The spindle should not start.

—if spindle rotation does start with the end- gear cover open, the safety switch is not operating correctly. This safety feature must operate properly before continuing operation. Press the EMERGENCY STOP button to turn the lathe OFF, disconnect it from power, and call Tech Support for help.

18.Move the spindle lever to the OFF position, then close the end-gear cover.

19.Use the cutting fluid pump switch on the con- trol panel to start the pump (see Figure 26 on Page 29), then open the valve. Verify that the cutting fluid flows from the nozzle, then turn the pump OFF.

Congratulations! The test run is complete. Perform the following Spindle Break-Inprocedure.

Spindle Break-In

Before subjecting the spindle to operational loads, it is essential to complete the break-in process. this helps ensure maximum life of spindle bear- ings and other precision components by thor- oughly lubricating them before placing them under load.

after spindle break-in is complete, we recommend changing headstock and gearbox oil to remove any metal particles or debris that are present from the assembly and break-in process.

the break-in must be performed in succession with the Test Run procedure described in this manual, as the steps in that procedure prepare the lathe controls for the break-in process.

Model G0746/G0749 (Mfg. Since 3/13)

DO NOT perform this procedure indepen- dently of the Test Run section. The lathe could be seriously damaged if the controls are set differently than instructed in that section.

To perform the spindle break-in:

1.successfully complete the Test Run proce- dure beginning on Page 28.

2.run the lathe for 5 minutes in each direction at 24 RPM (first forward and then reverse).

3.repeat Step 2 for the remaining RPM rang- es, progressively increasing in RPM. When these steps are complete, the lathe is broken in.

Congratulations! Spindle break-in is complete. We recommend changing the headstock and gearbox oil before operating the machine further (refer to Lubrication on Page 67).

Recommended

Adjustments

The following adjustments have been made at the factory. However, because of the many variables involved with shipping, we recommend you verify these adjustments to ensure the best results:

Factory adjustments that should be verified:

•tailstock alignment (see Page 42).

•Cross slide and compound slide backlash adjustment (see Page 78).

•gib adjustments (see Page 79).

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