How hot is too hot. Just figured as long as I can hold my hand on it for 5-10 seconds not too hot?? Will get laser thermometer since they are cheap at Harbor Freight or Northern Tool.
I have a dual axle trailer so 4 hubs. I check all four and if one feels much hotter than the rest, I worry
Spartanburg/Edisto
Sea Hunt 27 “Saltwater Gospel”
Bomb Island 16 “Hookin’ Heels”
WE USUALLY SEE ABOUT 15-20 DEGREES ABOVE AMBIENT
www.teamcharlestonmarine.com
www.bombislandboats.com
IF I RESPOND IN ALL CAPS, ITS NOT ON PURPOSE, AND I AM NOT YELLING
If it’s hot enough that you cannot put your hand on it for 1 sec… it’s time. Let it cool, take off the tire/wheel then see if the spin is noisy or if the hub shows any give, those bearings are about gone.
Capt. Garry Coats
Folly Beach & CHS
@DolphinChartersSC
The smaller the tire the higher the bearing temp on a high speed haul. Also your load can cause an increase in temp. The hand test is not very reliable as just sitting in the sun you will see temps of 120-130 on metal parts. I’d not worry until you see temps past 160+ unless it was a very short haul. Also the smell test may be better than the “touch” test.
Temp sensors on big truck (not many have em on the hubs but some do) don’t alert until 250* ish. Dana and Meritor do recommend inspection after getting over 225*, but I wouldn’t trust that high on a smaller axel.
As for me saying not to worry seeing temps up to 160+ I would be concerned if three were running 110-120 and one was at 140* Repacked hubs using a good “high” temp grease, set at proper preload… let it rip. Then get a baseline temp for all hubs …any variation check it out. Another side note, Grease does not preform at optimum until 160*