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Old 05-23-2021, 12:15 PM   #1
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Need Some Help - Urgent Please

Just saw this. Yikes. I did lose the cap off of this wheel on our current trip. It rained, but I know it wasnít this way a few days ago. I am going to change the fluid today. The question I need help on is if I change the oil once, am I safe to drive 240 miles to home and then change it again?Click image for larger version

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Old 05-23-2021, 12:22 PM   #2
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Just saw this. Yikes. I did lose the cap off of this wheel on our current trip. It rained, but I know it wasnít this way a few days ago. I am going to change the fluid today. The question I need help on is if I change the oil once, am I safe to drive 240 miles to home and then change it again?Attachment 329261
What is your question other than you lost the center cap/cover? Your wheel bearing center seal looks fine.
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Old 05-23-2021, 12:25 PM   #3
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Oil floats on water and the milky color says there is water in that oil.

Draining and changing from outside leaves some oil in the inner bearing area. You can't get that until you pull the hub off.

Change what you can, go home and take it apart to do it right.
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Old 05-23-2021, 12:27 PM   #4
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The gear lubricant is clearly contaminated by water.
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Old 05-23-2021, 12:39 PM   #5
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Get two quarts of gear lube. That will be plenty for enough changes to get the contaminated oil out of there.


I use an old fashion transmission pump to suck out the old oil.


Add new, overfilling. Suck it back out. Repeat until pretty clear.


Fill to proper level. Drive 20 miles or so, stop and repeat.
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Old 05-23-2021, 01:43 PM   #6
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You should have a 1/8" pipe plug on the hub. Rotate the wheel until that plug is on the bottom, remove plug, drain the hub into a container for about 10 minutes. Reinstall drain plug, remove red fill stopper and s-l--o-w-l-y refill to add mark with 80/90 wt. gear oil or specific hub oil your choice. Wait 5 minutes for the thick oil to level-out then again slowly fill to full line.

If you have no drain plug this gets messy; remove the 6 Stemco hub cap retaining bolts and without tearing the gasket remove the Stemco hub cap. Contaminated oil can be funneled with a piece of thin cardboard into a container.
Then refill as explained.
Any NAPA will have replacement parts/gaskets if needed.
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Old 05-23-2021, 01:48 PM   #7
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Without removing the wheel, the drain plug is kind of hard to use.


That is why I use a cheap manual suction pump.


https://www.harborfreight.com/oil-su...gun-95468.html
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Old 05-23-2021, 02:03 PM   #8
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Without removing the wheel, the drain plug is kind of hard to use.


That is why I use a cheap manual suction pump.


https://www.harborfreight.com/oil-su...gun-95468.html


I went and bought a Miri-vac. Brake bleed pump. Worked great. Iím still puzzles on how the water got into the hub. The plug is fairly solid. Iím wondering about seals now. I did drive it in the rain recently for one of the first times ever.
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Old 05-23-2021, 02:33 PM   #9
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Would I visually see evidence of an inner seal failure?
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Old 05-23-2021, 02:49 PM   #10
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If you have drum brakes an inner seal leak might take a while to show on the brake drum. By then the brake shoes will be soaked and require replacement.
The best indicator is to look at the oil level every time you do your walk around before driving the MH, you will remember from last time.

Spartan rep advised me to leave my chrome covers off for that reason, convenient daily monitoring.
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Old 05-23-2021, 02:55 PM   #11
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I went and bought a Miri-vac. Brake bleed pump. Worked great. Iím still puzzles on how the water got into the hub. The plug is fairly solid. Iím wondering about seals now. I did drive it in the rain recently for one of the first times ever.

Short term, really doesn't matter.


Long term, indeed, check inner seal and critically END-PLAY for the bearings. And if leak detected, check brake shoes/pads. If any oil on them, replace all shoes/pads on that axle.
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Old 05-24-2021, 08:10 AM   #12
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Just an FYI but they make a drain pan that fits perfectly in the wheel below center hub to catch all the oil when draining. I got mine at a larger NAPA store. Safe travels

Enjoy the journey
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Old 05-24-2021, 06:42 PM   #13
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Need Some Help - Urgent Please

Well, hope it helps someone else. I ended up changing the oil 5 times today. The first at the RV park, and then 2 at 30 and 60 miles. Hub never got hotter than 70ish F, which was the exact same as the other front hub. After the 4th time it started looking completely normal. Spoke to my mechanic and he has NO idea how water gets in without a thin viscosity oil leaking out. He asked about sabotage, but Iím not sure about that.
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Old 05-27-2021, 08:07 PM   #14
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All new plugs installed today. They are tighter. Just FYI
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