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Old 08-04-2011, 09:36 AM   #11
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oh, the reference to repacking seems to be taken to mean pump grease into the axle until fresh grease comes out around the nut. i always thought of it as taring down, cleaning and hand packing. that is still the way i do it but i add a couple of shots of grease every couple pulls as insurance.
when u pump grease in, it goes in between seal and inside bearing. read how others have done this. the key word is slowly. believe the procedure is a sticky under general tech and repair.
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Old 08-04-2011, 11:32 AM   #12
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I always check the temp of the tires and hubs when I stop after a long pull. I think it is a quick and easy indication of the health of the component.
Times Two

I touch the hubs (not the caps) with a finger tip. They should be warm to the touch but not hot. If one is hotter than the other three it means a brake or breaing is having a problem.
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Old 08-04-2011, 11:45 AM   #13
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Warm to the touch the front ones are NOT ..... More like hot to the touch ... After a long trip, they were almost untouchable ...

Bearings to be greased to start with .... Sigh .... I am glad I check them every time I take her out .... Now I am worried the bearings might have died ....
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Old 08-04-2011, 11:52 AM   #14
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The bearings may be "over tight" or you could have dragging brakes on that axle.
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Old 08-04-2011, 12:05 PM   #15
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Our unit is a year old and it amazed me how much grease I put in the EZ lubes. Also the brakes were wayyy out of adjustment. I carry a digital temp gun and check the truck and trailer tires and the trailer hubs every time we stop for the 2 minutes it takes.
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Old 08-04-2011, 12:20 PM   #16
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I can't see the bearing getting tighter, will they ? .... in my previous checks they were all same temperature, well more or less, nothing to alarm me ...

I guess it is one of these three :

Lack of grease ....

Brakes started to stick and are dragging ...

Bearings are shot for some reason .....(lack of grease most probably)

My plan of action is,

Grease the heck out of all four ....
Take her for a 15 minute ride and stop without using brakes
Measure the temperature and make comparisons ... (I purchased a temperature reader)

- if the front temperatures are higher, take apart the front bearing and do whatever is needed.

- if the temperature is more or less same for all four, it is not bearings
take her for another ride and use the brakes liberally and take a temperature
- if the front temperature is higher it is the brakes, take care of it.
- if the temperature is more or less the same, all it needed was some grease.

Of course latest next spring I have to take the whole thing apart and check regardless because of this ...

How does it sound ?

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The bearings may be "over tight" or you could have dragging brakes on that axle.
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Old 08-04-2011, 12:24 PM   #17
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The "over tight" would have been when the bearings were installed. There is a cotter key (or fold up tab) that prevents the castellated nut from turning once the nut is properly installed.

Lack of grease (or baked on grease) means you need to pull the wheels on that axle; inspect; repack; and reinstall them. Use care when you fill your EZ lube hubs to you do not pop the rear seal and get grease on your brakes.
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Old 08-04-2011, 12:35 PM   #18
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Oh ok, you are saying it must have been overtightened at install time. Since this issue developed recently, that is not the case then. That's what I was trying to get at. Unless the cutter pins were somehow sheared .... Possibilities are endless

I need a 12 ton hydraulic jack ! I know where they sell them dirt cheap

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The "over tight" would have been when the bearings were installed. There is a cotter key (or fold up tab) that prevents the castellated nut from turning once the nut is properly installed.

Lack of grease (or baked on grease) means you need to pull the wheels on that axle; insect; repack; and reinstall them. Use care when you fill your EZ lube hubs to you do not pop the rear seal and get grease on your brakes.
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Old 08-04-2011, 01:02 PM   #19
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12 ton? 24,000 pounds might be overkill.

You are only lifting half the camper at any given time.
A 6 ton bottle jack can lift 12,000 pounds (plenty for a 15,000 pound camper).

I am sure you know, but use shoring under the jack to prevent sinking into the asphalt and a short square metal bar to distribute the lifting force along a section of frame (to prevent spot overloading).

Support the axles with appropriately rated jack stands BEFORE you get under any part of the camper.
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Old 08-04-2011, 01:20 PM   #20
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if u jack up the wheel, rotate it, and wiggle it. if u can feel any play, i wouldn't expect it to be too tight.
if u can hold ur hand on the bearing housing, it more than likely is ok. i forgot where that magic temp is that u can't hold u hand on something hot...it seems like it is somewhere around 120 or 130 F.
the bearings on each axle on mine run different temp. if each hub on the same axle is running abt the same, i would suspect the load and not be concerned. i wouldn't think u would have both bearings fail.

try the grease first before u disassemble anything. that will most likely solve ur problem. before u add the grease, read the post abt ultra lube axles in the general tech and repair section on this forum.
if u actually get to the point of disassemble, keep in mind that that is going to disturb the seal. sense it is a yr old, i wouldn't try and reuse the seal if u disturb it. when u retighten the nut, u want to snug the nut while rotating then back off 1/4 to 1/2 turn to allow for expansion. on mine, i went 1/4th then a little more till i could line up the carter pin.
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