Grease Guns
What has your experience been in using a small grease gun to replace grease in wheel bearings? I have my bearings repacked every spring and last summer still had bearings burned out. No doubt they...
Forum Discussion
seaeagle2 wrote:X2
If they're really bearing buddies, they don't serve any purpose on a travel trailer. If you over fill bearing buddies, you can easily blow out the rear seal. Their purpose is to maintain a slight positive pressure so when boat trailer hubs are submerged in water, the water doesn't get into the hub assembly. You probably have a spindle lube type set up, I had those on my last boat trailer, and if you do it right, you can acutally see the old grease being flushed out, and the seals remain intact. Boat trailers take way more abuse than TT,s and I never lost a wheel bearing.
And to expand on why they maintain a positive pressure...
When a hot hub is submerged in cold water, it cools really fast. Without bearing buddies this fast cooling will create a vaccum inside the hub. This can easily suck water past the seals.
