Dynatrac temps?

[Mark31]

Guys, I finally got my Carli bjs and Dynatrac/Dynaloc free spin installed Friday. At 115k, the top bjs had a bunch of slack and the truck had just started to wallow around at much over 70, which I rarely do. The Carlis fixed that! One Dynatrac retainer had to visit the belt sander for a light touch before it would go in, otherwise perfect kit. The Snap On tool to push off the old hub bearings was trick. Now the question: After a 22 mile 55 mph run this pm, the Dynatracs were warm. What should the temperature be after a run like that on a 80* day? I've got to make a similar run tomorrow and will go by the shop and put the zap gun on it. I'm pretty sure we didn't get 'em too tight, but I don't want to mess up. Thanks for your help. Mark

 

[jelag]

almost every thing I own, truck, travel trailer, work trailer etc usually shows me any where from 80* to 120* after any length of time. I've never had a set of bearings be much over the 120* mark and would start to question if there was something higher than that after all the test's I've run over the years. Hope that helps. .

 

[Prairie Dog]

Same here as Jim, with the side in the sun being as much as 10 degrees hotter.

 

[EDankievitch]

If you can hold your hand on them and not have to remove it I'd say that your ok... . Remember that the heat from the break disk can transmit down to the hubs...

 

[Mark31]

Thanks all for your comments. Zap gun showed 105* and 107* (sunny side, Prairie Dog!) with air temp 74* after a 40 mile loop with a couple of stops. Mark

 

[AMcCormick]

Even after driving all day in the sun on the freeway mine are just warm to the touch putting your whole palm on the hub

 

[Gonzo 1066]

I would have to assume that the heat you are feeling if from the brakes, get a thermomether gun. There should be some difference between the hub area and the wheel and brake disc.

 

[S.Morris]

130deg is about where it gets too hot to hold your hand on it but you can still touch for a couple of seconds.

x2 on what Jelag said. Keep in mind that brake temp will migrate and temp being recommended are not including temp rise caused by heavy braking to get stopped and check the temp:-laf

 

[pjorlando]

I agree with EDankievitch, if you can't hold your hand on the hub, it's getting too warm. I've found that if my hand says ouch, a bearing is failing.