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Delta 36-725 T2 start problem/burning rubber smell

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Forum topic by deeve posted 05-05-2020 08:45 PM 429 views 0 times favorited 20 replies Add to Favorites Watch
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deeve

33 posts in 29 days


05-05-2020 08:45 PM

I picked up a Delta 36-725 T2 table saw from Lowes in April. I was pretty excited since they are very hard to come by, around here anyway , and I think the 36-725 has proven to be a pretty good saw with the T2 appearing to have improved on a good thing.

I have used it a bit since I got it to make a workbench and some small woodworking projects. Other than 3/4 plywood it has all been softwood that has been cut. On Friday and again today (Monday) when I turned on the saw for the first start of the day the blade would not spin, but I could hear the motor making noise. Friday I was able to get to the stop button pretty quickly and turned it off right away. I checked to see if maybe something had fallen in and caught the blade but nothing was in there. I spun the blade by hand a few times and other than a bit of resistance it spun fine. That resistance has been there since I got it so I assumed it’s normal.. is it?. I then hit the switch again and this time it started right up and worked fine for the rest of the day.

Today after the saw having sat for a few days the same thing happened again. This time the blade started spinning before I was able to hit the switch. I was fumbling with the work piece so it took a few seconds more seconds. After the blade started spinning I smelled burning rubber like when the vacuum cleaner belt burns, if anyone knows what that smells like. I again checked the saw and all seems fine. After I got done with my project I decided to take a closer look.

I took off the shroud around the bottom of the blade (I think it has an official name) and pulled off the bottom plastic inspection cover for the belt. The belt looked mostly fine. The plastic cover had no rub marks and there was no belt dust to be found. I did see one small section of the belt where some threads are showing along the edge like it rubbed at some point. The section is maybe 1/4 of the total belt. I took some photos up inside to see if I could see anything out of place but it all looked good.

These first two phots show the section of wear on the belt. The other two are looking up inside the housing toward the top.

Any thoughts? Seems odd for a brand new saw to have these problems.

Thank you.

-- Dave Hillsboro, Oregon


20 replies so far

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deeve

33 posts in 29 days


#1 posted 05-06-2020 01:39 AM

I lucked out and found one new one in the Portland, OR area Lowes and exchanged the saw. The first one definitely had something wrong. The blade resistance was much more than the new one I picked up. The saw also started up quicker as well. Something was not right in the drive system somewhere.

I did try calling Delta but after being on hold I requested a call back that never came. Glad I swapped it out.

-- Dave Hillsboro, Oregon

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Madmark2

1255 posts in 1319 days


#2 posted 05-06-2020 12:45 PM

Tighten the drive belt.

-- The hump with the stump and the pump!

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deeve

33 posts in 29 days


#3 posted 05-08-2020 03:02 PM

Af first that is what I thought might be the problem, but after examining things and getting a replacement saw I think it was more than a loose belt. After getting the replacement I realized that something out of the norm for a brand new machine was at play. The saw turned with quite a bit of additional and uneven resistance compared to the new one. When I bought it the box was pretty beat up and I wonder if it had a rough life in shipping that might have knocked something out of whack. If anything I would guess the belt was too tight maybe or a bearing somewhere that was messed up.

-- Dave Hillsboro, Oregon

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OldBull

60 posts in 26 days


#4 posted 05-08-2020 03:38 PM

My box was so beat up I got the saw for 450$ and when opened it was brand new. All of the Delta boxes were beat to crap and back. It is quiet and spins up fast. I have yet to cut a board. Still getting stuff in as I am so new to woodworking. This saw is online but pricing is confusing, showing the 725T2 and pricing for 5000T2 and the reviews are mixed between the two. The instructions were terrible but I hope the saw is fine.

Please tell us how you got the warranty to work and how the process went so we will know for the future?

-- still have 10 fingers as of Apr 30th 2020

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deeve

33 posts in 29 days


#5 posted 05-08-2020 03:43 PM

I tried calling Delta but got no response. Since it was less than a month old I just took it to Lowes and exchanged it for a new one. I felt like I got lucky since they are so hard to find around here. $450 was a great price.

-- Dave Hillsboro, Oregon

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OldBull

60 posts in 26 days


#6 posted 05-08-2020 03:59 PM

Delta machinery’s contact button is disabled, this company is not gaining fans with their business model.

Could the corona virus be a problem for them ??

-- still have 10 fingers as of Apr 30th 2020

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deeve

33 posts in 29 days


#7 posted 05-08-2020 04:10 PM

I don’t know. I called and explained the problem to the person who answered. She told me it was a new model and I needed to talk to someone else. She transferred me and after being on hold for a while I choose the option to be called back. That call back never came. I found the saw in stock local which I did not expect so I just swapped it out.

-- Dave Hillsboro, Oregon

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deeve

33 posts in 29 days


#8 posted 05-11-2020 04:46 PM

Well, the second saw did the same thing only worse. It sat for 48 hours after working fine. I started it up this morning and it just hummed with no blade spinning. I turned it off, checked things, and turned it back on. The motor just hummed so I turned it off again. I then spun the blade by hand and it was pretty stiff at first then spun. I turned the saw on again and it started working. After a few seconds, I heard a rattling sound and smoke started coming out of somewhere…quite a bit actually accompanied by a burning rubberish smell. I turned it off and unplugged it. It is plugged into a 20 amp outlet with only the saw on that circuit. I am using a 12 gauge 50ft extension cord if that matters.

I will let you know what Delta says.

-- Dave Hillsboro, Oregon

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deeve

33 posts in 29 days


#9 posted 05-11-2020 05:36 PM

Here are some interesting photos. I called Delta and the technician was thinking the capacitors got smoked so he had me pull the bottom cover. The capacitors looked fine but I found this rubber/cork-like gasket hanging out. I pulled it out and it was definitely smoked.

[url=https://flic.kr/p/2j13v71][img]https://live.staticflickr.com/65535/49883602496_8afe6b13e3_k.jpg[/img][/url][url=https://flic.kr/p/2j13v71]Untitled[/url] by [url=https://www.flickr.com/photos/[email protected]/]deeve5603[/url], on Flickr

-- Dave Hillsboro, Oregon

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OldBull

60 posts in 26 days


#10 posted 05-11-2020 05:54 PM

Maybe you should check your home voltage and make sure it is 120

-- still have 10 fingers as of Apr 30th 2020

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deeve

33 posts in 29 days


#11 posted 05-11-2020 06:04 PM

Sorry..seems that I am having trouble with the photos. Here they are through a different hosting service. This little gasket thing was hanging out from the fan area where the pencil in the second photo is pointing.


You can see in the cover for the capacitors pieces of that part where is destroyed itself.

While on the phone with the tech I pulled the actual motor cover and found pieces of the gasket where it flung out on the cover and came out from the fan fins.

From looking at the parts diagram I wonder if it is part of the motor brake. The tech didn’t think so, but I don’t know what else it might be.

Any thoughts?

-- Dave Hillsboro, Oregon

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deeve

33 posts in 29 days


#12 posted 05-11-2020 06:08 PM



Maybe you should check your home voltage and make sure it is 120

- OldBull

My theory at this point is for some reason the brake is not disengaging all the way or at all. I do not know how the brake works but from looking it at I think it the clutch must disengage when power is turned on and engages when power is cut. For whatever reason it is not disengaging. The house has 120 volts. I wonder if the extension cord is to blame? It is 12/3 heavy-duty but maybe at 50 feet it cuts too much for a “cold” start up?

-- Dave Hillsboro, Oregon

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Fresch

481 posts in 2651 days


#13 posted 05-11-2020 06:15 PM

Cord should be fine.

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deeve

33 posts in 29 days


#14 posted 05-11-2020 06:33 PM

Just got off the phone with Delta, they are sending me a replacement saw and I will box this one up and return it to them. They plan on having their engineers take a look at it and figure out what happened.

Pretty good customer support for sure. I will keep you all updated.

-- Dave Hillsboro, Oregon

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OldBull

60 posts in 26 days


#15 posted 05-23-2020 01:33 PM

It looks like the problem is probably all in the motor, more and more motor problems being reported on the 36-725T2 on lowes website.

-- still have 10 fingers as of Apr 30th 2020

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