wingless' Ridgid R4511 Granite Table Saw - Bevel Mechanism Gear Skipping Repair

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Blog entry by wingless posted 02-09-2019 01:05 AM 1071 reads 0 times favorited 4 comments Add to Favorites Watch

There are several Internet topics about Ridgid R4511 granite table saw owners w/ tilt bevel mechanism rack and pinion gear skipping problems, but I have not located any with the solution to that problem.

That problem existed on my terrific new-to-me R4511 table saw.

There was no solution provided when I called Ridgid technical support. (When I determined the solution, I called them back so they would also have that information.)

On my saw, when attempting to set a 45° bevel, just prior to reaching that angle the pinion gear would skip one tooth on the rack gear, with a loud clunk.

The entire saw was cleaned and all the moving contact surfaces were lubricated, but all that had zero effect on the problem.

The tool has an eccentric sleeve, P/N 089037005154, item 73 on Parts List Figure B. That sleeve has an exposed 14mm hex head, like a nut, shown in the image adjacent to the block.

The rotation of that sleeve brings the worm gear shaft closer or further to the pinion gear. (Note that I supported the heavy motor mass during this adjustment so the motor wouldn’t / couldn’t suddenly swing if the gears disengaged.) When I rotated the sleeve to bring the pinion gear closer to the rack gear this restored normal full-swing operation of the tilt mechanism.

4 comments so far

View wingless's profile


34 posts in 130 days

#1 posted 02-09-2019 04:22 AM

This image shows the eccentric, where the eccentric nut is coaxial w/ the shaft, but the gear and collar are offset.

This shows how rotating the nut/eccentric will change the spacing between the pinion gear and the rack gear.

On mine, it took a breaker bar and a 14mm crowfoot wrench to break the eccentric free. Once free, a regular combination wrench permitted normal rotation for the proper setting.

!!! Please remember to block the motor during this adjustment so it doesn’t fall suddenly if the gears disengage !!!

View stefang's profile


16705 posts in 3722 days

#2 posted 02-10-2019 12:07 AM

Do technical support people just give up if they can’t answer technical questions right off the bat? I would have thought that they would have checked back down the line as far as necessary and come back to you with an answer. Maybe they can’t do that nowadays because most machine tools are produced abroad these days. Anyway it was lucky that you were smart enough to solve a problem that the ‘experts’ couldn’t.

-- Mike, an American living in Norway.

View wingless's profile


34 posts in 130 days

#3 posted 02-10-2019 01:42 AM

There is zero fault assigned by me to Technical Support. The agent I spoke with investigated the problem, then discussed the issue w/ others prior to not being able to provide the solution. We were on the phone for over a half hour in an attempt to resolve the issue.

My assignment of blame is instead directed at me. I never tilted the blade when I investigated the saw for purchase, 100% my fault.

When I inquired of the seller about the problem (after the sale, but prior to understanding / resolving the problem), I was informed that 45° tilt worked fine for him, it must have cropped up during the move from his home to mine.

My BS meter is now pegged on his response because it took massive force w/ my largest breaker bar before that 9-year-old eccentric moved. Now it rotates fine.

Also in-defense of Tech Support, I have the tool in my shop, they don’t. At the time of our conversation I had dozens of images of those parts that have since received detailed examination, before I spotted the offset that is identified with the arrows. Tech Support didn’t have those images.

All is good. Now I know, Tech Support knows and the Internet knows.

There are thousands of these Ridgid R4511 saws. The mechanism is 100% different on their next saw, the R4512, so the population of owners that will need this information is limited.

In my case, I want the saw to work fine during my ownership. My last saw was in tip top condition for my 25 years of ownership, until the motor suddenly gave up the ghost (not the brushes, wiring or switch), leading me to end up with this as a replacement.

Most of my tools are many decades old and still look / perform like new. I expect the same from this saw.

View stefang's profile


16705 posts in 3722 days

#4 posted 02-10-2019 07:22 PM

I didn’t realize this was a used saw so I see your point.

-- Mike, an American living in Norway.

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