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Need help troubleshooting DW733 planer


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I have a DeWalt DW733 portable thickness planer, which is about 15 years old. I need help troubleshooting a problem.

Recently while planing some rough-sawn cedar, the planer started making a "clunk" sound about every two seconds. With each clunk, the work piece stopped feeding briefly. After planing, the work piece had a very slight snipe mark every few inches.

At first, I thought it might be dull knives, so I replaced them with a new set. That did not solve the problem.

I then ran the planer with no work piece. Viewing from the infeed side, I noticed that the left end of the rubber feed roller on the outfeed side would drop down briefly, maybe about 1/8 inch, with each clunk sound. The right end would remain in its normal place.

Later that day, I noticed a piece of deformed plastic on the floor near the planer. See a photo at http://share.plaidflannel.com/Planer_Part.jpg. This piece seems like it could be a damaged washer or bushing of some kind that could be related to the misbehaving feed roller.

An exploded parts diagram of the DW733 is at http://plaidflannel.com/DW733_Exploded_Parts.pdf.

I would appreciate suggestions on how to repair the tool, if possible. I believe DeWalt no longer sells parts for this model, but some third-party companies my have them. Is this something I can do myself, or would the reassembly of the tool require precision alignment tasks not suitable for a novice?

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  • 4 months later...

I was able to repair my planer, and I thought I might post what I did in case someone else has a similar problem.

The exploded parts diagram was important to solving the problem. Get it at http://www.ereplacementparts.com/images/dewalt/DW733_TYPE_1.pdf.

I removed the side panels and the chain drive cover. Then I removed the clips holding the chain wheels on their respective axles on the left side of the planer. I could then remove the rear pressure roller by removing the brackets on each end below the bushings. I discovered that one of the bushings was cracked, which allowed the hole supporting the roller axle to become significantly elongated. That allowed the left end of the pressure roller to travel up and down.

I was able to get a new bushing from ereplacementparts.com. Installing it solved the problem.

Note that I did not have to take apart anything in the motor housing or knife area. I'm not sure I could have done that and gotten it all put back together and correctly adjusted.

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