Grizzly g0669X Drive Belt Tensioning, To check/tension the drive belt, Tools Needed, Wrench 13mm

Drive Belt

Tensioning

Power is transferred from the motor to the spindle with a heavy-duty drive belt. With normal use, this belt will gradually stretch over time. When it does, perform the following procedures to re-tension it.

Tools Needed	Qty
Phillips Screwdriver	............................................ 1
Wrench 13mm	1
Wrench 17mm	1

To check/tension the drive belt:

1.DISCONNECT THE MILL FROM POWER!

2.Remove the belt access panel from the right side of the head (see Figure 59).

Drive Belt

Figure 59. Access panel removed to access

drive belt.

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3.Check the belt tension. When moderate pres- sure is applied to the belt between the pulleys (see Figure 60), there should be approxi- mately 1⁄2" of belt deflection.

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Figure 60. Checking for belt deflection.

4.Loosen the four motor mount hex bolts (see

Figure 61).

Adjustment

Hex Bolt

Motor Mount

Hex Bolt

(1 of 4)

Figure 61. Motor mount and drive belt tension

adjustment hex bolts.

5.Push the motor back until there is the correct amount of belt deflection, then tighten the adjustment hex bolt in and against the motor mounting plate to secure the setting.

6.Re-tighten the motor mount hex bolts.

7.Re-install the drive belt access panel before beginning milling operations.

G0669X Precision 10" x 54" VS Milling Machine