doubleclutchinweasel

Barry might even be willing to add some sections for all the other non-Mack stuff. Like the Brockway section in the "other brands" section (yeah, I know the Brockway-Mack connection!). Glad y'all are here regardless,

Thanks, Man. Sorry about the wife's Mom.

Yep, Geoff. Sounds like a preload issue.

Believe it or not, too much grease can also cause a bearing to overheat at higher rpm. If over-greased, the whole thing can get heat-soaked because the excess grease can trap the heat. Our industrial bearings are typically filled 1/3 full.

I suspect the upper tray may act as insulation, keeping the colder air under it? Interesting thought, High Binder. Okay, Joey...Why is it we drive on the parkway and park on the driveway?

Does the clutch have an internal adjustment that may not have been done? That or the throwout bearing sounds most likely. Doing what Bob said will eliminate the issue being the adjustment on the clutch brake. If doing what he said allows you to sit still, in gear, with the clutch in, then the clutch is releasing. If it tries to move with the clutch in, then the clutch is not releasing...for one reason or another. Gotta start somewhere...right?!

There are 3 or 4 guys on here that will chime in pretty soon. I'm sure they will give you some good troubleshooting tips. And, welcome to The Dog Pound.

Or that...

All kidding aside, I read once that hot water does make clearer ice cubes and makes them faster. The hot water is supposed to have fewer trapped gasses in it (just like you said).

You've got one of the best in the business helping you there, 'Mutt!

Yep. One of the biggest challenges when designing a bearing assembly, or any other assembly for that matter, is to calculate what parts will grow in what direction and what that growth will do to the assembly. Lots of factors there. Coefficients of thermal linear expansion of all the different materials. Type of lubrication. Phase of the moon. Neighbor's wife's bra size. You name it. One of the most fun things I have ever done is build precision machine tool spindles. Tolerances in the millionths of an inch. Things where the ambient temperature, and the temperature of your hands, affects the build-up. Those have to be pre-loaded to run accurately, but will instantly burn up if set up too "tight". Really enjoyed those, though. One of those things where the extra time spent getting it "just so" pays off in seriously longer service life. Dang. Getting teary eyed and nostalgic now!😂

Sure! Let's go with that! As good a reason as any!

Thanks, JoJo.

Maybe the upper tray holds more cold air in the bottom tray, making it somewhat different?

Did I miss something here? Was there a deleted post I never saw? LOL!

"If you've held a tailgate party at a funeral..." Speaking of funerals, I just heard that one of my toolmaker mentors passed away a couple of weeks ago. Kenneth Monroe Roper (aka: "Hawkeye") left this world at the not-old-enough age of 75. I learned a lot from that guy, and I will miss him.

"If your coveralls no longer cover all..."

Sounds like you've pretty much got it figured out. We routinely build special tapered roller bearings for certain customers with zero clearance or even with preload. But, these are typically heavy load/low speed applications. The higher speed bearings always have clearance in them. Of course, there are other factors to consider. Depending on the application, the materials used in the assembly, and the way they are mounted, tapered bearings CAN actually loosen up as they heat up. But, with a back-to-back mounting with a steel spacer in-between, they typically get tighter as they heat up. Keep us informed!

I'll try to remember to look that up in my service manual and put whatever information they have about it on here. I think it's just a mention that it exists, though.

I guess he got what he needed??????

Definitely sounds like the bearing spacer could be too thin (making for too little clearance). Tapered roller bearings CAN run at zero clearance, but at reduced speeds. Axial clearance of 0.003-0.007" is more common for higher speed applications. They are pretty forgiving.

There's a picture of that center section in a shop manual I have. They just referred to it as an "auxiliary" gauge panel in there. I'm sure Mack came up with some cute marketing name for it, though.

Drove a Super 10/Top 2 one time. That's been a while. Thoughts and comments on it withheld!

Has the accessory gauge cluster in the middle of the dash. Nice!

Man, those bring back memories...