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From what I saw when searching during the late hours of the night due to my sleep issues, I believe the hub bearing and the rotor are the differences between E99 and L99.
You more than likely have a mismatch since you have a 99 and some parts stores are run by imbeciles.
Well ****. It’s always something isn’t it! Hahaha! I’ll be going to the parts store and trying to put something together. Thanks for all the replies! I’ll let ya know what I figure out.
Let me ask y’all this.... Instead of buying a new unit bearing, cuz I really don’t have the funds, could I use washers and shim the hanger? All that matters is the rotor is centered in the hanger correct?
If I were you, I would get the measurements of the different unit bearings and the rotors. Then see what you have on your truck and find the cheapest way to make it right. You may need different rotors, you may need different unit bearings. But, if you think about it, because the calipers and brackets are the same, they are out of the equation.
So, if you have E99 unit bearings, get E99 rotors. If you have L99 unit bearings, get L99 rotors.
Ok, this is what I have learned. For the 99 F-350 super duty. There are 3 different rotor sizes, according to Napa. He showed me all 3. For the early 99 models you have a rotor that measures 13” and has a slightly shallower hat depth.
For the late models 3/22/99 build date and newer. There were two options. The 13” rotor like the one for the E99 but a deeper hat depth (the one I needed). The other option for the L99 is a rotor that measures 14”. I don’t have any reference for a hat depth, as that one was out of the question first, due to it being an inch larger... he did say that his system showed the same part number for both E99 and L99 calipers/hangers. We didn’t even discuss unit bearings once we found the correct rotor.
I appreciate all the suggestions. I’m sure all this info is here in the forums somewhere, so I apologize if I’m beating a dead horse. Cheers 🍻 and thanks again for the guidance!
Yeah the info is in here somewhere. Someone did a nice write up years ago but I can't locate it at the moment. Mark was right when he corrected me. I should have said bracket not caliper.
Sounds like you have it now.
This should be in the tech folder. With sizes and part numbers. We don't see it often, but often enough to include.
We have the official Ford release on E99 - L99 differences. I would be interested in adding a post that details the part numbers and a brief description of the differences as well.
Do you have access to a milling machine? As a machinist Im thinking I could fix that issue in 20 minutes
Originally Posted by SkySkiJason
Filled with grease through ABS hole they hold up just fine. They have a 10yr warranty.
I have been argued down for years that this wasn't possible! The tune changed when I took a metabo to an old one, dissected it to show the roller bearings in the same cavity as the abs sprocket.. (Tahoe bearing)
Do you have access to a milling machine? As a machinist Im thinking I could fix that issue in 20 minutes
I have been argued down for years that this wasn't possible! The tune changed when I took a metabo to an old one, dissected it to show the roller bearings in the same cavity as the abs sprocket.. (Tahoe bearing)
Milling the bracket or rotor would put the caliper in the wrong place. This could allow pistons to push out of their bore causing catastrophic failure and no brakes... He can get the correct rotors and should do that.
We’ve been filling the unit bearings here on FTE for years. Riffraff sells a fitting with a zirk that makes it EASY, but we just used the grease gun for years before that. Every failed unit bearing I’ve seen lacked lubrication. The ‘cheap’ ones can last a looooong time if you keep them greased.
Milling the bracket or rotor would put the caliper in the wrong place. This could allow pistons to push out of their bore causing catastrophic failure and no brakes... He can get the correct rotors and should do that.
We’ve been filling the unit bearings here on FTE for years. Riffraff sells a fitting with a zirk that makes it EASY, but we just used the grease gun for years before that. Every failed unit bearing I’ve seen lacked lubrication. The ‘cheap’ ones can last a looooong time if you keep them greased.
I see what youre saying, it does appear to be at least 3/16ths of an inch out of center. That makes my thought process towards making a spacer but then again I'm not there to put my eyes on the job .. I have a e99 myself so if I ever have these issues ill retain this info
Milling the bracket or rotor would put the caliper in the wrong place. This could allow pistons to push out of their bore causing catastrophic failure and no brakes... He can get the correct rotors and should do that.
We’ve been filling the unit bearings here on FTE for years. Riffraff sells a fitting with a zirk that makes it EASY, but we just used the grease gun for years before that. Every failed unit bearing I’ve seen lacked lubrication. The ‘cheap’ ones can last a looooong time if you keep them greased.
quick question, I have this zerk fitting for the abs hole and have yet to use it. Is it possible to put to much grease in? All the bearings on my heavy equipment you just grease until the old stuff comes out, but didn't think these bearings on our trucks were the same. Just a couple squirts??
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