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DW735 Planer Bolts: Just Learned a Hard Lesson!

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Forum topic by jasoncarpentry posted 01-01-2013 08:50 PM 1232 views 1 time favorited 20 replies Add to Favorites Watch
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jasoncarpentry

111 posts in 1310 days


01-01-2013 08:50 PM

Those of you who have the Dewalt 735 planer might have experienced this problem. The 24 bolts which fasten the knives to the cutterhead (eight per knife) are made of cheap steel (carbon steel?). They tend to “freeze,” even after just hand-tightening. And more often than not, my efforts to remove them have resulted in a rounding off of the hex inset; I then have to use a bolt extractor to take them out, which ruins the head.

The good news is that stainless steel bolts have a deeper hex, and, being harder material, are much less likely to round off. So, I’ve ordered 24 replacement SS bolts; until then, I have a mixture of CS & SS bolts. Now here comes the hard lesson: I added lock washers to all of the bolts to make them easier to remove, and then made a few passes on a hard-to-make laminate. The result? Dark, slightly deep gouges along the length of the workpiece.

Being the genius that I am, I immediately stopped planing, opened up the planer, and removed all of the lock washers. The heads of the CS bolts showed a slight degree of flattening, which means that there’s no “forgiveness” in the cutterhead clearance. The lock washers had simply raised the boltheads up too high to avoid contact w/ the workpiece.

So, if you’re tempted to add lock washers (or just plain flat washers) to the bolts, DON’T DO IT!! Has anybody else had this problem w/ the DW735?

-- Jim in Tennessee


20 replies so far

View pintodeluxe's profile

pintodeluxe

3363 posts in 1468 days


#1 posted 01-01-2013 08:54 PM

The first time I changed my blades, I could tell they were torqued on there pretty good. However on subsequent changes, I have had no problems. I blow the dust out of the bolt heads, which lets me seat the allen wrench all the way into the bolt.
Thanks for the heads-up on the lock washers.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View teejk's profile

teejk

1215 posts in 1340 days


#2 posted 01-01-2013 09:06 PM

I think you find the same problem on jointers…most likely the legal department got involved and mandated LokTite on the threads…a bear to remove the first time (bandaids not included).

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ajosephg

1853 posts in 2216 days


#3 posted 01-01-2013 09:11 PM

I put a drift in the bolt socket and give each bolt a good rap before trying to loosen them. Haven’t stripped one yet.

PS – Also put some anti seize compound on the bolt threads before re-installing them.

-- Joe

View rockindavan's profile

rockindavan

283 posts in 1291 days


#4 posted 01-01-2013 10:18 PM

Never needed to use lock washers. If you are so inclined, your could try star washers. They are a bit thinner than the standard split washers.

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jasoncarpentry

111 posts in 1310 days


#5 posted 01-01-2013 10:22 PM

ajosephg-

At the risk of appearing stupid, what’s a “drift in the bolt socket”?

-- Jim in Tennessee

View SnowyRiver's profile

SnowyRiver

51451 posts in 2136 days


#6 posted 01-01-2013 10:36 PM

I noticed on mine that the first time that I had to change the knives I almost broke the handle off of the hex wrench they give you. I have noticed now that each time I flip or replace the knives that they come off much easier. I think the factory just over tightens them.

I think Joe is talking about a drift pin…its like a center punch. The rap on the bolts loosens the seal on them.

-- Wayne - Plymouth MN

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ajosephg

1853 posts in 2216 days


#7 posted 01-01-2013 11:06 PM

Jim – as Wayne said, basically a center punch without a point.

http://en.wikipedia.org/wiki/Drift_pin

-- Joe

View Craftsman on the lake's profile

Craftsman on the lake

2386 posts in 2093 days


#8 posted 01-01-2013 11:20 PM

for my 734 it was the factory tightening. I have a bosch combo drill driver. I used the driver in reverse to unseat them as it has a hammering effect.

-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful.

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JoeinGa

3245 posts in 662 days


#9 posted 01-01-2013 11:31 PM

Havent had my 735 long enough to hafta change the blades. But I’ll certainly be watchful for this when the time comes. I have a box full of stainless bolts, will look to see if I have enough to change them out
Thanks for the tip.

-- Perform A Random Act Of Kindness Today ... Pay It Forward

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robjeffking

26 posts in 761 days


#10 posted 01-01-2013 11:39 PM

Same problem here with my 13-580 delta every bolt came out except for one there always ONE that has to be a pain.
Tried all the usual solutions ended up having to grind the head off the bolt.

View RVroman's profile

RVroman

163 posts in 679 days


#11 posted 01-02-2013 12:38 AM

I have made about 3 blade changes on mine and have not had a problem. Of course saying that means the next time something bad is going to happen…...

-- Robert --- making toothpicks one 3x3x12 blank at a time!

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lew

10034 posts in 2411 days


#12 posted 01-02-2013 12:46 AM

After reading the horror stories about these bolts, I went to Fastenal and bought replacements. Same dimensions but harder steel. Also used a dab of anti-seize on each one when exchanging them. So far so good.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View Straightbowed's profile

Straightbowed

717 posts in 953 days


#13 posted 01-02-2013 02:05 AM

troque them at 400kmgf

-- Stevo, work in tha city woodshop in the country

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Straightbowed

717 posts in 953 days


#14 posted 01-02-2013 02:06 AM

TORQUE them at 400 to 500 KMGF

-- Stevo, work in tha city woodshop in the country

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Straightbowed

717 posts in 953 days


#15 posted 01-02-2013 02:08 AM

I almost had the same problem but I just bought a gross of bolts and a small torque wrench problem solved if the allen doesn’t feel right I pull the bolt and put a new one in before it happens

-- Stevo, work in tha city woodshop in the country

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