Grizzly G1021x owner manual Chain Tension, Table Parallelism, To adjust the chain tension

The chain drive transfers movement from the handwheel to elevate the table. The chain drive can be adjusted to remove slack if the chain stretches over time or during table leveling pro- cedures.

To adjust the chain tension:

1.DISCONNECT THE PLANER FROM THE POWER SOURCE!

2.Remove the motor access panel.

3.Loosen the two locking bolts and move the idler sprocket until chain play has been elimi- nated (Figure 24).

Idler Sprocket

Lock Bolts

Figure 24. Underside of table.

4.Re-tighten the two locking bolts.

5.Check chain lubrication. Refer to SECTION 6: MAINTENANCE on Page 22 for further details.

NOTICE

DO NOT let the chain fall off the sprock- ets—returning it to its proper location with- out changing the table adjustments can be very difficult.

G1021X 15" Extreme Series Planer

Table Parallelism

Table parallelism is critical to the operation of the machine. As such, it is essential that the table is parallel with the cutterhead (within 0.002") from side-to-side, as illustrated in Figure 25.

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Figure 25. Side-to-side parallelism of table and

cutterhead.

How the table sits in relation to the head casting from front-to-back is also important (see Figure 26). 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".

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Figure 26. Front-to-back parallelism.

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