What an amazing video... I've just come off the back of watching someone putting sticky red bike grease on the cogs you mentioned and I was thinking to myself "that can't be right!".. thanks Sion, your video has saved me from doing that and maybe even saved my table saw. Thank you so much. Consider me subscribed!

Great video . Exactly what I was looking for. Even had the part number I'm probably gonna need

I discovered this flaw today. The saw certainly got it’s use but I would have to agree footing the bill for a new saw is annoying. I absolutely subscribed 🤙🏼

Thanks for the heads up! Will definitely be getting some of that spray

Thanks for alerting us to this common issue. I'm going to epoxy some toothbrushes to the motor housing to clean threaded bar above and below and then spray with PTFE dry lubricant.

I know this is an old thread but i've only just found it. I purchased my saw about 6 years ago and have been really pleased with it until recently… . when the blade rise has been tightening up… and the lowering has become jerky. The problem is of course dust related..my fault, the saw has been operating flawlessly for years… i'd just blow it out every few weeks… but that's not enough !! Firstly, i would urge anyone with one of these saws to invest in a shop vac… absolutely essential so that at least you'll get rid of most of the dust… Secondly, i'd blow out the dust from around the motor daily, not weekly or monthly… . it'll save the saw. Thirdly, spray a dry lube like a silicone spray on the threaded rod which runs the rise on the saw frequently, and perhaps even more importantly spray the tracking guides on either side of the motor… . when i spray these the jerkiness disappears … for a while anyway. The dust is a major issue with these saws… i don't know why Dewalt hasn't done something about better sealing the intetnals of the blade area… there are gaping holes front and back of the blade which allow the dust to escape… … .so i'm looking at the best way to seal these openings now. I love my saw, but i'd think twice before purchasing another one because of this issue… . when you spend $1400 Aus you shouldn't have this problem !!

Very useful information, thank you

Thanks for the useful information Sion

I love videos like this. Woodworking is not just about making nice stuff, you need tool maintenance skills in the mix. Sorry to hear about the repair bill, pity you can't cut a notch in the casting and slot in a nut. I am having similar issues with my table saw, the fence has a cast part that cracked and am jerry rigging it. Was thinking of buying a new saw anyway.

Mine just started rattling and skipping. I remembered making a mental note of this video a few years ago and am glad to have found it again. I am considering my options. Do you happen know: 1) What type of thread is the threaded rod? 2) Is there any excess thread on the rod when the blade is fully lowered or raised? In that case, one might simply glue a nut to the aluminum casing on either side of the internal thread.

I had the EXACT same problem with my son's Dewalt. Until I realized after 20 minutes of pulling it apart I had plugged in the wrong cord.

Thanks. I,m from Romania and i have a 745, i clean that just with air, it works good...

Well that makes a lot of sense what about my table saw. Gonna look immediately if that's also my problem. Thanks a lot for showing!

If you enjoyed this video and found it useful consider SUBSCRIBING I have a dedicated playlist ( DW 745 ) with lots of tips including cutting DADO,s with just standard blades .

...aaaand now you've convinced me to get a Mitre Gauge

Hi Simon. I've currently got my 745 in bits and have found huge slop in the threaded boss, exactly as you describe. Mine hasn't stripped yet but has lateral and vertical movement within the boss, indicating the thread is significantly worn. The undercut for the circlip (winding shaft) is also too shallow, allowing the circlip to disengage and slip down the shaft. This in turn allows the vertical bevel gear to fall out of mesh with the horozontal bevel gear. I too love my 745, and up to now has performed well, but I now have to decide whether to invest in a repair, or but a different brand.

Gee, who would have thought running a hardened steel threaded rod through cast aluminum and expecting it to carry all the weight of the motor and drive assembly would create an issue? Answer: Basically anyone who's ever designed or built something. Installing a simple brass or steel threaded insert in that gearcase assembly for that threaded height adjust rod to run through would have cost maybe $1 in manufacturing cost and would have solved this entire issue.

This video helped me to solve my problem. I will use dry lubricator in the future. . Thanks for the info.🖕

Not just dewalt, same issue with the other brands as well, aluminium castings against metal rods never a good idea but they all have the same mechanisms

Everyone I know has a problem like this with this SaW!!! Including ME!!! There should be a hardened threaded receiver inside the aluminum casting -- and come on it wouldn’t cost them THAT MUCH to do this-- there can also be corrosion on the other Guide rods which can cause the blade to Freeze in place-- Fortunately My saw “froze” with the blade at it’s maximum height- and yes I know it’s not the safest thing when you’re cutting thinner boards but at least the damn thing is still useable…..

I found that the other shaft that's normally my problem and it causes it to bind.

Is it feasible to put some kind of dust shroud over the gear assembly and threaded rod? I have a new as-yet-unused DWE7485 and now I'm wondering if I should do something like that prior to use?

To stop this happening in the future, can’t you sleeve the threads with some kind of rubber or zipped fabric sleeve that is able to move freely and incase the threads keeping them clean and free from dust ?

Same thing happened to my 7485 Type 2. The aluminum stripped and its useless until fixed. Really ought to be a recall. Im so dissappointed. Ive had it for 18 months and the warranty is up after 12

Maybe too late now, but have you thought about putting a bolt on top and under the aluminium cast and weld them to a bar so that welded bolts move the alluminium cast?

I'm on a job in Athens Ga. and mine just had all the symptoms so has anyone done the replacement and if so how long did it take , trying to decide if it's worth fixing.

NOOICE!

replacing it is the only option for repair. it's a known issue with these.

oh they are selling me dewalt for $200 the problem is the blade adjustment, good to know thank you

Mine came with a thick layer of grease over those gears.

I just replaced mine. My guess is it is caused by hard cranking raising and lowering. $63

Threaded insert in aluminum ? the stripped casting works as a pilot hole for your drill bit. Tap hole screw in steel insert & repeat drill & tap for shaft thread spec.... stop throwing out expensive parts when u can burn up hundreds of hours fixing them

You could’ve repaired that for about £20 ish , by using thread repair inserts

Glue a nut on the end of the carriage… One that obviously fits the screw. Problem solved

Looks like you got shafted

(From FAB) I had a similar problem (it was hard to bring the blade up) with my Dewalt 7485 that I bought 4 months ago. I was going to take it to the Dewalt repair center today, but I decided to watch some videos about how to repair it. One person said to use some type of red grease. I had some similar "dry oil" as you suggested, I have the DW-40 Dry Lube with PTFE. It works. With every quarter turn of the blade height adjustment wheel I sprayed the shaft next to the gear. No messy grease. The manufacturer didn't use grease anyway. The "dry oil" keeps it kind of dry and smooth. This saved me a trip to the Dewalt repair shop and not having my table saw out for a few days at least. (NOTE: the dry oil might be flammable, so it might be a good idea to wait a few minutes before turning the motor on. I also covered the motor with some rag to protect it from oil getting inside it) . (NOTE: Remove the blade and the knife before turning the table saw upside down so that when you turn the wheel the blade won't be on the way). Thank you.