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Old 03-24-2015, 11:17 PM   #1
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Hubs-Grease packed vs. oil bath

Hello everyone,

It is time for me to have my hubs serviced, see rig in signature. I would like to get some information on what is the preferred way to go. I have heard from a truck shop that grease packed hubs need to be serviced once every 30,000 to 35,000 miles and oil bath only needs to be watched and filled if they get low on oil.

The price is not too much different for having the hubs repacked with grease compared to switching over to oil bath.

Thanks in advance for your input,

Stuart
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Old 03-24-2015, 11:25 PM   #2
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Have only had the oil bath ones in our DP's, easy to check and not much, if any, maintenance other than draining and replacing the oil which is easy to do. I wouldn't have anything but oil bath now.
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Old 03-24-2015, 11:39 PM   #3
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Changed ours to oil.
Cost wise it wasn't much different and far easier to maintain.
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Old 03-25-2015, 08:44 AM   #4
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Our coach had the grease hubs, when we first bought it I had a complete service done including the hubs. Every year afterwards I would pull the end caps and look for any problems and would inject some grease around the hub using a long horse syringe to get the grease back into the bearing. I did this for 4 years and then decided it was time for a service but I did go ahead an get oil bath.

My wife had the rig down in Orlando so I had her take it to Josam's for the work, I believe it cost ~$400 which is about the same as a repack. Now I just have to pop off the halfmoon hub and look at the oil level.

So far so good, no problems and am satisfied I made the right decision.
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Old 03-25-2015, 08:55 AM   #5
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Installed wet hubs on my 93 PADP. Have them on our new to us rig.
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Old 03-25-2015, 08:57 AM   #6
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I have switched our previous Beaver and our current Dynasty from grease over to oil bath. I prefer the oil bath hubs.

Mike.
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Old 03-25-2015, 10:11 AM   #7
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We had our grease packed hubs checked for the first time at 70,000 miles and were told they were fine and should go well over 100,000 miles before a service being needed.

Now at 96,000 miles with no apparent problems.

When I have them done, will change to oil hubs just for the ability to inspect and maintain them myself.
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Old 03-25-2015, 10:16 AM   #8
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Thanks everyone,

Sounds like the oil bath conversion is the way to go. A Freightliner dealer in Phoenix stated a price of $740 per hub. I am heading to Austin TX and will look into getting it done there. The $740 price seems high, what are your thoughts on the price?

Thanks, Stuart
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Old 03-25-2015, 10:20 AM   #9
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Our '91 Beaver came with oil filled hubs. Put 154,000 on it and had seals replaced at 100,000. Never any trouble. Bought our present Monaco which had grease filled hubs. Changed them to oil filled at 74,000. Now have 95,000 on coach and think the change was worth it.

Cost of change over was $485 , in 2013. Had it done at Marv & Tom's truck repair in Elkhart. Good place to go. They will work on RV's.
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Old 03-25-2015, 10:51 AM   #10
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Quote:
Originally Posted by S-n-L View Post
Hello everyone,

It is time for me to have my hubs serviced, see rig in signature. I would like to get some information on what is the preferred way to go. I have heard from a truck shop that grease packed hubs need to be serviced once every 30,000 to 35,000 miles and oil bath only needs to be watched and filled if they get low on oil.

The price is not too much different for having the hubs repacked with grease compared to switching over to oil bath.

Thanks in advance for your input,

Stuart
Providing more information other than my previous post about what I had, I will say this;

If you use your coach infrequently with long periods of non-use between the greased hubs will possibly provide a better protection for the bearings.

If you use your coach more frequently with little rest between trips then the oil bath does provide better cooling and lubrication as it "flows" oil more readily through the bearing while in motion, although it will be negligible.

Mike.
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Old 03-25-2015, 11:03 AM   #11
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Quote:
Originally Posted by S-n-L View Post
Thanks everyone,

Sounds like the oil bath conversion is the way to go. A Freightliner dealer in Phoenix stated a price of $740 per hub. I am heading to Austin TX and will look into getting it done there. The $740 price seems high, what are your thoughts on the price?

Thanks, Stuart
That seems a bit high.
I can look it up but remember it being about $250 a wheel.
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Old 03-25-2015, 11:05 AM   #12
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Quote:
Originally Posted by S-n-L View Post
Hello everyone,

It is time for me to have my hubs serviced, see rig in signature. I would like to get some information on what is the preferred way to go. I have heard from a truck shop that grease packed hubs need to be serviced once every 30,000 to 35,000 miles and oil bath only needs to be watched and filled if they get low on oil.
The price is not too much different for having the hubs repacked with grease compared to switching over to oil bath.
Thanks in advance for your input,
Stuart
Stuart
Since there is little difference in price I would have them converted to oil bath...(oil bath hub maintenance is a simple DIY job).
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Old 03-25-2015, 01:56 PM   #13
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That seems a bit high.
I can look it up but remember it being about $250 a wheel.
John
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2 caps, 2 gaskets 2 wheel seals and lube 2 hr job "IF" you have the proper tools like Scott (Fireup) & myself! That tire dolloy & torqe mult. was one of the best purchases of the year for me!

When I purchased the Discovery the right front seal had gone and the brake shoes (air/drum) where saturated! Possibly by sitting for an extended period of time as Mike (zmotorsports) states in a prior post.

I had to drive the rig from TX to NH. I asked the detailer to pressure wash and drove it bacjk ro NH checking the oil level at each stop. I ended up replacing the front axle shoes/seals at approx 160 in parts from Freightliner.

Must tell ya, those brake shoes looked like they where dipped in oil!!! Amazed me that I never had a pull to the right side on that trip! Must have been the ABS in action.
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Old 03-25-2015, 10:08 PM   #14
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Thanks again for all of your information. Mike I did not know about the issue with sitting. I do stay at times for a month or two at a time. If this is an issue maybe keeping the grease packed bearing could be the best bet.

As for price I have called 3 Freightliner shops covering AZ and TX. The prices were all quoted as 4 to 5 hours for both hubs at $139 per hour to do the grease repacking, ouch. To convert to oil it will take another hour or so. It seems they are quoting from a time estimate table or something similar.

I was recommended to call Iron Horse RV in San Antonio, TX. I will call tomorrow and see what they say.

The Freigtliner shop in Austin did not want to work on the coach but one in Tuscon and one in San Antonio would.

Stuart
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