Thanks for the video. all it takes is a few thousandths of an inch of runout on the arbor over the 12" width of the blade to cause a whole lot of blade wobble. Nuts to the guy who told you to pay someone else to fix this for you.
@CarolinaFarming
2 жыл бұрын
Great video! Thanks for taking the time to document the process you took.
@ealdydar
3 жыл бұрын
I wish i just did mine myself. Paid a Dewalt service center to do mine and they only replaced 1/2 the bearings and a gear for some reason. It vibrates worse then ever and just today after using it for under a week the grease is all over the blade and on the wood i cut.
@enduringcharm
3 жыл бұрын
Yikes! That sounds like they screwed up. Sometimes if you want it done right you have to do it yourself.
@richardwolske2015
3 жыл бұрын
Thank you , my Dewalt has bad bearing in the head , now I can fix it myself 👍
@chrisperry7963
8 жыл бұрын
Nice job, a solid fix!
@meatman655
6 ай бұрын
I have a DeWalt 708 sliding compound saw and I’m getting bearings put in from the replacement parts. I ordered needle bearings and they came open ended and I need a closed end one in the Saw. I believe you saw that you worked on seven years ago had two closed ones that you knocked out, did you get them somewhere else besides Ereplacement parts because mine came open ended thanks
@enduringcharm
6 ай бұрын
ereplacementparts.com is actually a well known, reliable source that I have used often. If you think you received the wrong bearing, I would contact them and see if it was a mistake or perhaps that no other options are available. Of course, bearings are a universal component which you can buy in generic form. There are both online and local bearing suppliers who can match up an old bearing to a new one. When purchasing a new bearing you'll look for a stamped number to match up, or you can measure the bearing dimensions and match it up with the appropriate type. Many of the bearings found in tools are common and you can find them on Amazon or the like.
@meatman655
6 ай бұрын
Thanks
@markmills7640
3 жыл бұрын
Thanks for this info mine is under a year old and in warenty so hopefully they will replace it good old dewalt
@enduringcharm
3 жыл бұрын
Wow, that's not a very impressive run! My saw had many years of hard use before the bearing went, so hopefully they'll cover that for you.
@ealdydar
3 жыл бұрын
I made a commnet about a month ago regarding my dw780 that i had repaired at a Dewalt service center and said i wish i just did the repair myself after watching this video. Since the repair the wobble was worse and grease was coming out the bearings on the blade and all over my work pc. I took it back becuase i paid to have it fix. Got it back it was under powered and grease was coming out again all over work pc. Contacted repair center and i was told it might be over filled a bit and just clamp the switch on and let it run it will push out the extra grease and rpms should come up. Whats your thoughts on the response i was give. Ive ran it for a while and no change in rpm and still grease but not as much.
@enduringcharm
3 жыл бұрын
There are some red flags there. I can't tell from here what went wrong, but I can imagine some possibilities. The bearing or the housing could have been damaged during assembly. The bearing could be installed at a cocked angle or not seated properly. The grease could be the wrong type, either too "stiff" or the wrong base type. The latter can be a problem if it mixes with the old grease and hardens up. In other words, there could be various physical problems causing excessive drag, which would account for the low RPM. Another possibility is an electrical issue causing a voltage drop, which would explain the low RPM due to the motor running slower. It's possible an electrical issue was introduced during the repair. But, if I had to make a bet, I'd say that it is damage to the bearing or it's housing that is your problem. Whether it can be fixed back up now depends on exactly what was damaged during the repair. Either way, you should get your money back.
@philfrank9483
3 жыл бұрын
Great video, @Enduring Charm LLC! I wonder if you put and indicator on the spindle shaft before taking on the transmission repair to see if the shaft was unstable? I'm guessing you didn't since you probably would have put that in your video. Do you think a dial indicator would detect runout coming from the transmission through the shaft?
@enduringcharm
3 жыл бұрын
I'm an ex-mechanic, so I'm no stranger to dial indicators, but when this wobble appears it isn't difficult to figure out. If you wiggle the outer edge of the blade with your fingers you'll feel play. You might be surprised at how much movement you would see on a dial indicator with a GOOD saw. Remember, when the saw is running there is significant centrifugal force at the outer edge of the blade, which helps stabilize the blade and the cut. Even with a bad bearing you can continue to make cuts, but the kerf will be wider and the cut not very clean. More than once I've been caught in the field with a saw that has a bent blade or wobbly bearing and finished out the day with it. Ideally, though, you should be able to wiggle the outer edge of the blade and not feel any clicking or movement other than the blade itself flexing.
@philfrank9483
3 жыл бұрын
@@enduringcharm thanks for the thorough reply. I'll be checking out the rest of your videos now - this one was spot on!
@kahoycrafts
5 жыл бұрын
I'm following this guide to replace the bearings in a secondhand DW716 miter saw. Everything is working out as exactly as you illustrated. The only surprise was cutting my index finger knocking out one of those needle bearings, the aluminum casing is kind of sharp. What sort of grease do you recommend for the gears, there seems to be a lot of it in there? Is bentone grease okay?
@enduringcharm
5 жыл бұрын
The type of grease is probably not that critical, except for two things. First, you don't want a super-thick grease which could cause the motor and gears to work harder than necessary or actually slow down the saw speed. Second, whatever grease you use needs to have a base that is compatible with the grease that is there already. OR, you need to clean out the existing grease and start over with fresh. There can be problems with mixing grease types that have different base composition, such as Bentonite clay with lithium. The easiest thing to do is clean all the old grease out and just use a common automotive bearing grease. Most of the common ones are lithium based.
@kahoycrafts
5 жыл бұрын
@@enduringcharm Thanks for the info, I finally got my saw put back together today and the automotive bearing grease worked great. I used a bearing puller instead of the notch trick since it seemed a bit easier. Happy to report that the wobble is all gone.
@enduringcharm
5 жыл бұрын
Nice job!
@jimyu5568
4 жыл бұрын
Michael Carter how did you get the needle bearing reinstalled in the arm casting? Did you press them into the arm casting first and then install the shaft/gearbox or did you put them on the shaft and press the whole assembly into the arm casting?
@nbichsel1
2 жыл бұрын
Great vid, just wish I saw how to grease up the gears before buttoning it up.
@enduringcharm
2 жыл бұрын
Nothing fancy, just jam the grease in there as thick as you can and make sure the teeth have even coverage.
@nbichsel1
2 жыл бұрын
@@enduringcharm hey I wanted to come back and say my saw is working great again because of you. Thanks!
@enduringcharm
2 жыл бұрын
That's great to hear, glad it worked out!
@JWGraham77
7 жыл бұрын
Do you remember how difficult to remove the plate ? I can't seem to figure out why mine won't come off. I want to grease the gears cause it sounds dry inside. ( Used Saw ) Thanks!
@JWGraham77
7 жыл бұрын
I got ! but now I have some play with the pulley bearing. lol Not sure how to pull that one yet
@enduringcharm
7 жыл бұрын
I'll just wait a little longer and you'll figure that one out too! Probably not a bad idea to lubricate the gears, but if the bearings feel loose they must be replaced. Well worth it, though-- the parts are pretty cheap and these are good saws.
@gkogel
4 жыл бұрын
Excellent video! I just got a used DW706 and table for $120. The setup works great, but I can hear a subtle chatter in the bearing housing at the saw head. I haven't noticed nor did I think to check blade wobble.. When you serviced your saw, how did the bearing at the operator end of the drive belt feel? Looked like in your video, the belt and bearings for belt pulleys rolled smoothly. I too am looking on ereplacementparts.com. They have great diagrams. So far, I'm getting a new kerf plate, both bearings for gear set, gasket, and inner bearings for back side of gear set.
@enduringcharm
4 жыл бұрын
I don't recall specifically, but when checking bearings by hand you want to try all different loads. It is possible for a bearing to feel smooth while rotating, for example, but it will act differently when placed under a side load or vertical load. Saw bearings tend to show wear with side to side play, so if you can wiggle the blade back and forth at the outside edge (unplugged, of course) and see the movement you want to investigate further.
@Raphael_NYC
6 жыл бұрын
Thank you. raphael santore
@Mopardude
8 жыл бұрын
So which one is your go to saw old trusty here or is the slider growing on you?
@enduringcharm
8 жыл бұрын
+Mopardude You know, I just did an exterior window repair project and took along my (newly fixed) old saw. We've been through so much together she's like an extension of my arm. At the moment I think my old saw and stand will be the one I keep on my trailer, since it takes the most abuse. The new slider will stay in my shop unless I have a specific need for greater crosscut capacity on a project. In automotive-speak the new saw will be a garage queen!
@smitm108
8 жыл бұрын
"Inspiring"! I wonder how many folks would just toss the saw in the dust bin & wait for the next big box store sales flyer in the Sunday paper? Thank you for posting ...
@enduringcharm
8 жыл бұрын
+Mark Smith HAHA! Well, those other folks might be the smarter ones. I have a sickness, though, and if I can possibly repair something I will.
@emeltea33
5 жыл бұрын
@@enduringcharm I can relate. Especially when you said I'm this far, may as well replace it too. I warn my buddies when I help work on their vehicles I might get carried away.
@alohaexpeditions1847
6 ай бұрын
Great video 🤘🏾
@hardeepsingh3285
2 жыл бұрын
Very nice talking and video make
@jasonbell5152
7 жыл бұрын
No sawdust, as visibly seen contaminating the gear grease in this video, should ever get past the bearing plate into the internal and spindle gears, unless someone removes the plate, tears the gasket, wrecking it,.and doesn't replace with new. The drivetrain on these saws are extremely durable . There's almost never any need to expose and remove the gears due to blade wobble. The fastest and surest route to ruining a compound miter saw, any power tool, is disassembling without expert knowledge of the unit's parts and components. It's way cheaper to bring the saw to an authorized repair shop and pay a pro to diagnose and repair the problem. And many saw makers offer multi-year warranties, so the repair could be N/C. The DW saws just need the occasional blade change, kept clean & tidy, the rare fence realignment. Anything more advanced, and one doesn't isn't fully familiar with the system, let a pro technician fix the problem.
@enduringcharm
7 жыл бұрын
Ha! Do happen to work for Dewalt? I appreciate your comment, but I do need to take issue with a couple of points. As tools get older their monetary value declines precipitously due both to wear and tear and to the availability of newer tools with new features. In my area, anyway, the repair costs by an authorized dealer for something like what is shown in the video rarely makes economic sense. And for pros like me who need their tools everyday, the cost of waiting for a unit to be repaired is also to be considered. Anybody with mechanical experience can work on these tools, they really aren't that complicated. As for sawdust entering the gearbox or similarly "sealed" areas, it's common for older tools that have seen significant use. I don't think I've ever opened up a table saw, radial arm saw, circular saw, router, drill, or miter saw that didn't have sawdust jammed into places it didn't belong.
@jasonbell5152
7 жыл бұрын
No. I have a DWS780 and number of other great heavy duty DW cordless, lasers and other stuff for trim carpentry and framing. The 706 is a fine saw. In your video you're groping in the dark for the blade wobble cause. Maybe we come from different schools of thought, but if I don't know 100% what the issue is and how to repair without damaging parts and losing others in the sawdust, the tool goes go straight to the reliable repair shop, staffed by techs that know 100s times more about the unit than I do. I have backup saws and tools should anything get damaged on a job.
@enduringcharm
7 жыл бұрын
I'm not sure why you got the impression that I was groping in the dark for a cause of the wobble. The way mechanical things are diagnosed is through a process of examination, which usually includes disassembly. Later in the video I did clearly indicate that there was a bad bearing causing the wobble. In remodeling we don't know with 100% certainty what a job will entail either. There is hidden damage in walls and floors, there is poorly installed original wiring and plumbing, an lots of other surprises we find after demolition. But, as I tell clients all the time, we won't really know what we'll find until we take it all apart. Same with a tool repair. I did spend a few years as an auto mechanic and I went to an auto trade school, so maybe my confidence is higher, but I would hope this video would play a small part in encouraging people to do their own repairs.
@jasonbell5152
7 жыл бұрын
Anyone who opts to self repair a DWS or any manufacturer must be equipped with every necessary part, grease and tools or they'll wind up in an aggravating dilemma with the saw in pieces and no hope of successful repair. They must be 100% prepared to tackle and address any latent problem the saw poses. Even you took 20 minutes to remove an ext. pinion shaft retaining ring for lack of the proper tool for the job. Your experience and know-how still took 1/3rd hour to carefully, patiently pry out without destroying or losing. Put an inexperienced operator in your place trying to bash it out with a hammer and screwdriver. Before this point they'll tear and ruin the gasket. Without a new one on hand the whole repair effort is futile. These saws are designed for owner maintenance and repair up to a limit. My rule is any issue beyond the inner washer, where blade wobble goes, take it in. If the repair estimate reaches 30% tool value, consider the option of buying a new one. The cost of a new DWS, to any gainfully employed pro carpenter, will pay itself off in no time while a tax writeoff.
@enduringcharm
7 жыл бұрын
Well, that's why I published the video--so less experienced folks won't make those mistakes! I'm in my 12th year of owning a remodeling business and I maintain everything myself. The tools, the shop, and even my truck and trailer. I don't think that arrangement is that uncommon, but, of course, if you're not that comfortable with mechanical repairs there's nothing wrong with having somebody else do the work.
@riverbuilder2251
4 жыл бұрын
DeWalt is such rubbish, there’s literally dozens of these videos.
@enduringcharm
4 жыл бұрын
Eh, every manufacturer has it's issues. These saws are actually quite durable overall. the one in the video was bouncing around the back of my trailer for many years of hard service before this repair, and it's back in the trailer now, too.
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