M35 axel heat?

[Madfarmersson]

Hey just a quick question, how hot should the rear axel on my M35 run?
I just put new seals in and repacked the bearings, tightened the bearings
acording to the TM's. I just took it on a 45 minute drive stop and start more or less, It is almost hot to the tuch, but I can hold my hand on it all day.

Madfarmersson.

 

[91W350]

Sounds like it is a little tight, depends a lot on ambient temperatures of course. They do not have much way to shed heat. I would not worry about it myself. How did it feel in comparison to the tires? Glen

 

[M35A2-AZ]

I think if you can hold your hand on it, it should be ok.
My hubs run about 130-140 degrees in summer.

 

[AceHigh]

Probably will run cooler over time. I keep one of those point and shoot thermometers in the glove box to check the axles.

Also check the brake drum, if it is hot it can transfer the heat to the hub and make you think it is the bearing or seal.

 

[Madfarmersson]

One brake drum was draging I noticed it when checking the axels,
but the others were fine. sounds like I should be all right.

The tires and rims were cool Glen.

Madfarmersson.

 

[gimpyrobb]

I think if you can hold your hand on it, it should be ok.

Ditto.

 

[Flyingvan911]

If it's too hot to touch it's a problem. Otgherwise, you're fine. Mine are hot in the summer, but not too hot to hold my hand on. In the winter they are just a little warm.

 

[John S-B]

The other thing to consider is if they are all about the same temp. Usually you're not going to have a great difference between the wheels, and as was said, if you can keep your hand on the hub without burning it should be okay.

 

[paulfarber]

After I redid the hub seals I used a laser temp sensor on the drums/hubs and after a 15 minute drive and right after stopping (about 2-3 minutes) I say anywhere from 180F to 220F

That's kinda hot.. but it was 90F+ out and I was in the sun so how much was friction heat and how much was the sun making black painted part hot?

Its been over a month and nothing bad has happened.

 

[Madfarmersson]

Ok sounds like I am ok, I will try to keep an eye on them.

Thanks,
Madfarmersson.

 

[steelandcanvas]

Jacob, as long as you can keep your hand on the hub, you're OK. Everytime I stop the Deuce, either for a break or at my destination, I always tour the outside if the truck and check the hubs. Also as stated above, those "point and shoot" temp guns are a nice way to check, and you can compare the readings from hub to hub.

 

[Bob H]

Generally 50 to 60° above ambient temps,
I.E. if it is 90° out the hubs would be 140° to 150°

If it burns your hands you have an issue, and always compare the temp all 6 positions, the right rears will be a little bit warmer than the rest

 

[stumps]

Generally 50 to 60° above ambient temps,
I.E. if it is 90° out the hubs would be 140° to 150°

If it burns your hands you have an issue, and always compare the temp all 6 positions, the right rears will be a little bit warmer than the rest

Ok, I'll bite, why will the right rears be a little warmer than the rest?

-Chuck

 

[steelandcanvas]

Ok, I'll bite, why will the right rears be a little warmer than the rest?-Chuck

Inquiring minds want to know.

 

[AceHigh]

He always keeps the sun to the right side?

 

[Katahdin]

Curious.... I noticed my middle-right axle was warmer then the rest so yesterday I started the process of repacking those bearings while fixing up the paint in the wheel well.

There was some heat discoloration on the inside of the ring in the inner bearing, but everything else looks good. I had been suspecting the axle nut was torqued on too tight.

 

[Bob H]

Inquiring minds want to know.

open differential, rotational torque,
means the right side drives most of the time.

 

[stumps]

open differential, rotational torque,
means the right side drives most of the time.

Ah! I was afraid that you might be making that mistake.

As long as both wheels aren't slipping both right and left axles drive equally.

-Chuck

 

[Hasbeen]

While in the transmission and Differential rebuilding business back in the 80`s, A factory rep. for Rockwell advised that his rule of thumb for a "fresh" rebuild was not to exceed ambient temperature plus 100 degrees. When I asked him what was a normal timeframe for the new parts to "wear in", or seat, and the temperature to decrease...he couldn`t
say for sure. I would think the "wheel ends" would be similar to the differentials, but have never asked or seen specific info on them.

Hasbeen

 

[Bob H]

Ah! I was afraid that you might be making that mistake.

As long as both wheels aren't slipping both right and left axles drive equally.

-Chuck

I'll stand by assessment of why the right side hubs are warmer than the left side.