Grizzly G1033X owner manual Table Parallelism Inspection, Chain Tension instructions on

How the table sits in relation to the head casting from front-to-back is also important (see Figure 29). Because the feed rollers, pressure bar, and chip breaker will be adjusted off the table position, the tolerances on the front-to-back positioning are not as critical as the cutterhead/table side-to-side positioning. Therefore, the maximum allowable tolerance for the front-to-back parallelism is not more than 0.020".

Head

Parallel Parallel

Table

FRONTBACK

Head

Not-Parallel Not-Parallel

Table

Figure 29. Front-to-back parallelism.

Table Parallelism Inspection

The easiest way to determine if your head casting has a parallelism problem is to plane a workpiece and measure the thickness in multiple locations. If the workpiece is tapered from left-to-right or from front-to-back, then parallelism may be a problem.

Use your Rotacator to further inspect the table parallelism. If you do not have a Rotacator, a wood block and feeler gauges may be used, but extra care must be taken to ensure accuracy. If the table is not within the maximum allowable tolerances, it must be adjusted.

Table Parallelism Adjustments

The table is adjusted by turning the chain sprock- ets underneath the table for movements over 0.016" or by adjusting how the table is mounted on the columns for movements under 0.016".

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NOTICE

When making adjustments, tighten fasten- ers after each step to ensure the accuracy of your tests. When adjusting the chain sprockets, keep in mind that if the chain becomes too loose, it will fall off of all the sprockets. Returning it to its proper loca- tion can be frustrating.

To adjust the table parallelism:

1.Disconnect the planer from the power source!

2.Remove the motor access panel and locate the chain on the underside of the table.

3.Loosen the lock bolts and idler sprocket (see

Chain Tension instructions on Page 28).

4.Mark the location of one tooth in the sprocket that you are adjusting.

5.Move the chain away from only the sprocket you want to adjust so only that sprocket can be turned independent of the chain.

Note: If the left side of the table is too high, the left two sprockets will need to be adjusted. Each tooth on the sprocket represents 0.016" of vertical movement as the cogs are turned. Make sure, as you turn the sprockets, to keep an accurate tooth count to ensure that the table is adjusted equally.

6.Carefully turn the sprocket (clockwise to raise the table; counterclockwise to lower the table) just enough to position the next tooth at the marked location, then fit the chain around sprocket again.

Model G1033X (Mfg. since 4/10)