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Old 10-03-2012, 05:01 PM   #1
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grease fittings on wheel hubs

i pulled the rubber caps off the center wheel hub and saw the grease fittings .. are these supposed to be similar to bearing buddies that i am used to ?? (had them on boat trailers ) i tried to grease them with 2 different types of hand grease guns ..not much luck..either the grease didnt go into the hub (stayed out side) and the center area didnt move out toward the outer edge of the hub..how far should they move towards the outer edge ?? if at all ??
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Old 10-03-2012, 05:07 PM   #2
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They do not move like BB. It will take lots of lube to fill the center cavity. Then put the rubber disk back on. Youroo!!
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Old 10-03-2012, 05:24 PM   #3
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EVERYTHING you wanted to know about those Zerks is here:

Ultra-Lube Axles and Bearings Procedures
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Old 10-04-2012, 12:59 AM   #4
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You might want to check the grease fittings themselves. All 4 on my trailer were defective. Grease would not go through them. To check remove the fitting, then put on the grease gun. Grease should squirt out of the fitting. Mine were plugged. New ones worked fine.

It does take quite a bit of grease to fill the hub the first time you grease them.
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Old 10-04-2012, 06:04 AM   #5
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Quote:
Originally Posted by kz08h5 View Post
You might want to check the grease fittings themselves. All 4 on my trailer were defective. Grease would not go through them. To check remove the fitting, then put on the grease gun. Grease should squirt out of the fitting. Mine were plugged. New ones worked fine.

It does take quite a bit of grease to fill the hub the first time you grease them.
Thanks...i think you are right..mine must be plugged also..time to try your idea..Dave
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Old 10-04-2012, 07:54 AM   #6
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I had one rolling around inside the dust cap, one that was loose and one that was bad (would not take grease) right from the factory.
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Old 10-04-2012, 09:34 AM   #7
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Or do the right thing and do not use them at all and pack the bearings the right way. Which if you go to page 20 of the Al-Ko 2 to 7k manual it clearly states after the instructions for using the ultra lube feature itself.


Hubs and components should also be disassembled
yearly and inspected for worn or otherwise damaged parts.


If you clean and pack your bearings properly after doing the service above there is no need to be pumping the hub cavity full of grease which all it does in there is slow heat dissipation. The bearing design in the axles is exactly the same as has been used in cars for years and years and you never saw people pumping the hubs full of grease and they would go for years and far more miles than get put on an RV in a year without any maint.
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Old 10-04-2012, 09:40 AM   #8
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...If you clean and pack your bearings properly after doing the service above there is no need to be pumping the hub cavity full of grease which all it does in there is slow heat dissipation
And of course Alko goes to all the expense of machining/drilling/tapping the holes and putting a grease fitting in the spindles just to have something to do and show off their machining skills.
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Old 10-04-2012, 09:42 AM   #9
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x2 on the bad fitting, replaced all 4 of mine, I also jack wheel off ground and rotate while greasing.
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Old 10-04-2012, 10:08 AM   #10
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This is what I use ..... after years of hand packing bearings I got this and never turned back !
$10.00 and takes 30 seconds to do 2 bearings.
Just an fyi


Turbs


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