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Old 05-15-2015, 07:12 AM   #15
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1981 31' Excella II
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I have been packing bearings for about 40 yrs and never had a problem from one I packed. It is a real good idea to pack new bearing because you never know if the guy at the factory did it right or used enough grease. If they save $100 on grease on 1000 axles then they look at that as profit. Yes cars last years between repacks and they are usually used often so it bakes all the water out of the bearings. Also you don't want Chinese made bearings that can fail because they did not heat treat the metal properly. Also it it your responsibility as an owner to monitor things. Bearings don't just fail immediately. They start running hot and making noise etc long before they seize. Get in a habit of feeling of tires and hubs or taking IR measurements every time you stop. The hand test works for me and you don't have to worry about dead batteries. If you don't pack the bearings your self or watch them being packed you don't know what they did. If they get them too tight they will overheat. The bearing guys here at NASA tell me that a loose bearing is much better than one that is too tight. As a bearing heats up it expands making the pressures on the bearings go way up. Now add the trailer loads to that and you have a problem. Always replace bearings and races as a set. I have seen races with different angles on them relative to the race that lead to rapid failure. Look for signs of bearing failure when you pack them, pitting, galling, rust, discoloration.

Perry
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Old 05-15-2015, 07:32 AM   #16
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Thank you Perry. My preference would be to do it myself, however, as a confidence builder would like to see someone else do it or have someone assist me the first time. YouTube videos are great but still like to have someone I can communicate with. I have a brother that is one of those NASA guys here in Huntsville. Says it should be an easy job. I just need to gain enough knowledge to build my confidence level.


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Old 05-15-2015, 11:44 AM   #17
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I can show you how to pack them. Dealing with the brakes is the hard part. If you only have 2 wheels to deal with, then that is pretty easy. Best way I have found is to get one of these tools for a grease gun. You also need a grease gun. I use Valvoline moly based bearing grease. You wipe most of the grease off the bearing put it in this thing and it pumps new grease through. You put some extra grease in the hub and a little in the grease cup. When you get the nut back on, you spin the wheel while tightening the nut. This seats the bearings. Now you back off about 1/8 to 1/4 of a turn. Now you put the split pin back on and bend the legs around the nut. This is assuming you don't have a never lube axle or something like that. It is messy more than anything. You go through lots of paper towels.


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Old 05-15-2015, 11:56 AM   #18
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Perry. I do most of the routine maintenance on the vehicles. I guess I'm no different than most it's always nice to have someone hold your hand the first time. Your instructions seem extremely easy to do and follow. I truly appreciate your replies. Should you ever get around Huntsville AL please look me up.


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Old 05-17-2015, 08:59 PM   #19
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I have towed trailers of all kinds, including boat trailers that immerse when backing into water or loading plus cars and trucks from 1/2 ton to semis, & trailers for well over 55 yrs. Never EVER repacked NEVER EVER HAVE had bearing failure, plus they all have many miles of use.
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Old 05-18-2015, 06:59 AM   #20
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Well bearings do need maintenance. They don't need it every year unless it is a new trailer and you are relying on the factory to pack them properly. When they fail it ain't pretty.

Perry

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I have towed trailers of all kinds, including boat trailers that immerse when backing into water or loading plus cars and trucks from 1/2 ton to semis, & trailers for well over 55 yrs. Never EVER repacked NEVER EVER HAVE had bearing failure, plus they all have many miles of use.
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Old 05-18-2015, 05:18 PM   #21
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Originally Posted by Ron A View Post
1. Does anyone use bearing buddy on their airstream?
2. Can someone help me understand what the pros and cons are?
They are best understood as a product designed for use with boat trailers where the trailer bearing ends up under water while launching. Under those conditions it is common for the bearings to become contaminated with water, which will lead to failure unless they are cleaned and repacked frequently.

The main disadvantage is that there is nearly always some grease leakage at the seals when bearing buddies are used. This can pose a risk of brake contamination. They could also shorten the life of the seals.

Quote:
3. Would the bearing buddy not keep bearings better lubricated?
Not really, unless you run the hubs under water. If you don't run under water, the bearings will stay lubricated until the seals fail, as a practical matter.

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I have read where some say no on the airstream but okay on other travel trailers. I do not understand the difference. My understanding is they keep water, dirt, prevent corrosion and pitting on the bearings. The more I read the more I get confused about bearing buddy, not sure I understand why they would not work well on the airstream to keep bearings lubricated. Can someone help clarify?
They don't solve any problem you actually have, and can make a mess and shorten the life of your seals. I would put them on a boat trailer. I would not put them on an RV.
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Old 05-18-2015, 09:03 PM   #22
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Thank you jammer.


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Old 05-19-2015, 06:40 AM   #23
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Ron you need some of this.

http://www.amazon.com/Grease-Pres-Hi...ease+cartridge

and one of these bearing packers.

http://www.amazon.com/Lisle-65250-Be...ng+packer+tool

and a grease gun

Amazon.com: Lincoln Lubrication 1133 2-Way Loading Lever-Action Grease Gun with 18" Whip: Automotive

You also need some grease seals which you can get at P&T trailer supply on Jordan Lane in Huntsville. To remove the rear bearings you have to knock out the seal. Sometimes you can re-use the old seal but they don't always fit tight enough and can pop out. This happened to me when I had a brake that would not fully release. It heated the hub up to the point the seal got pushed out. It made a mess. I don't know what size seal you need but you can take an old one up there and get a new double lip seal for about $3.

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Old 05-19-2015, 07:48 AM   #24
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Thanks Perry I have added it to my wish list on Amazon.


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