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Old 01 June 2007, 09:25   #41
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I don't think they are the 'sealed for life' bearings. I've got exactly the same trailer but it has bearing buddies fitted. AFAIK they would be pointless on the 'sealed for life' bearings.
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Old 01 June 2007, 11:38   #42
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One thing I neglected to mention over the course of this conversation: IR temp gauges.

I make a habit of checking the trailer hub temperatures at each stop (usually for tow vehicle fuel). When properly adjusted, they seem to run in the 97 to 110 degree F range. Any increase means that something is amiss, causing friction, baking the grease, and most likely, signaling imminent bearing failure.

The device I use is from Radio Shack, but there are a ton of them out there:
http://www.radioshack.com/product/in...entPage=search

Simply point the device at any exposed portion of the hub, press and release, and read the temp. Pretty simple, and takes about the same amount of time as walking around the trailer.

Interestingly, the tow vehicle hubs tend to run nearly 100 F warmer than the trailer hubs, I figure it's probably due to the disk brakes.

jky
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Old 01 June 2007, 12:06   #43
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just towed hundreds of miles this week for training purposes for some security personnel, and luckily no probs but I do carry a big plastic box with wheel bearings jack etc etc in it and a BIG extendable wheel wrench cos them wheel nuts do get tight. Loadsa launching at a variety of slips from very shallow gradients (rope it back cos I never get the car wet)to incredibly steep ones (engage 4wd lo to get back up again !)and whilst we are infamous for our launching techniques on home ground there are lotsa slipways where keeping the wheelbearings out of the water is just not an option. Well not if you want to keep the gelcoat on the boat that is!
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Old 01 June 2007, 12:17   #44
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Dave,

My situation is pretty much the same as you. I have to submerge my trailer most times to launch. No failures. Touch Wood. My road trip is 80 miles round trip. I honestly believe a lot of these problems occur because trailers just don't get used enough. If your using it once a week your soon going to know if you have seized brakes etc. However if you don't use it for 6 months during the winter its pretty likely its going to have problems.
The problem with any wheel bearing is if the trailer sits static for months on end. A little bit of pitting occurs where the weight is all put on one place for a long time.. Then when you start towing this causes a heat build up which leads to ultimate failure. And if it sits for ages the breaks will definately seize causing more heat problems.

NR.
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Old 01 June 2007, 12:57   #45
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agreed when I had to store m'boat just by the slipway in a damp underground store the wheel bearing used to go all the time. A bit of a tow down the road regularly works wonders
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Old 01 June 2007, 14:12   #46
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Trailer Bearings

I repair trailers for a living. I have seen almost everything when it comes to trailers. When you use the Grease fittings Such As (Bearing buddys, EZ Lube, etc...) be carefull because you can blow out the seal in the back of the hub and that will allow water to enter the hub and rust the bearings. You can repalce bearings every 6 to 8 months when takeing a bath in salt water cheaper than replace the axle when the bearing welds it's self to the spinle. I am in the trailer repair business and I keep the bearings instock for most American trailers if you want to email me the numbers on your bearings I can tell you how much they go for here. I will assist any one who needs instructions on how to service there trailer properly.
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Old 01 June 2007, 15:03   #47
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Bearing grease

Does anyone recommend the use of waterproof grease ( white stuff)on trailer bearings.
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Old 01 June 2007, 15:06   #48
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I use the Johnson / evinude wheel bearing grease which is water proof grease. So far so good ( It has only been 6 months though)

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Old 01 June 2007, 18:29   #49
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I have given up with braked trailers after many problems with bearings and with brake shoes coming loose and jaming the brakes. I went and bought an American trailer with bunks, not rollers and no brakes. Fantastic piece of kit. The boat sits nice and low on the trailer and getting the boat off and on the trailer is a breeze. Getting the boat on is especially easy. When the sea is a bit rough you just drive it onto the bunks and clip on and thats it.
The only problem is that these trailers are illegal because they are 3cm too wide and you need brakes if the gross weight is more than 750kg. However since I am pulling the boat with a Discovery and the boat is kept only a mile from the slipway I am prepared to risk it. I had an American trailer on a previous boat which I towed all over the country with no problem and never had to touch the bearings.
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Old 01 June 2007, 18:34   #50
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When I replaced the bearings on a trailer 3 years ago, I made some bearing savers and greased with "X-Tra Heavy Duty Wheel Bearing Grease" from Lucas oil products. This was sourced from my local indispension dealers and is green in colour.

I checked my bearings fequently but was amazed to see no corrosion at all. As some of you know, Kohaku was out of action for a year and no maintainance was done on the trailer, when I sold her earlier this year I inspected the bearings once more and again found them to be as good as the day I'd fitted them.

Now whether this is down to Savers or Grease or both I'll let you decide, but the guy in the trailer dealers that sold me that tub of grease, swears by it and said I could gowrong if I used it.

I would like to add that know where on the tub dose it say "waterproof" but it dose state it exceeds all Marine application requirments.
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