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Old 09-24-2012, 08:33 PM   #1
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Rear axle please help

How much fluid should be it there should it be to the top of the drain plug please help

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Old 09-24-2012, 09:03 PM   #2
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The Dana 30 & 35 should hold about 2 quarts each. I can't speak for the 44's because I have no past experience with them, but I would bet someone will answer you shortly...

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Old 09-24-2012, 09:05 PM   #3
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Should fill to the fill plug, if you stick your finger in it it should not be lower than the start of the plug from the bottom up.
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Old 09-24-2012, 09:13 PM   #4
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um... my book says 1/2 inch below the fill plug on the d30 and d35...
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Old 09-24-2012, 09:15 PM   #5
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um... my book says 1/2 inch below the fill plug on the d30 and d35...
Hmm my technician said its supposed to go to the top but always follow the manual so 1/2 inch below it should be. I'll have to check mine out now.
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Old 09-24-2012, 09:18 PM   #6
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yea im lookin around some more now.. just read another thing that said till it comes out, but kinda makin me wonder cuz i just blew out a pinion bearing a week ago nd if its cuz it wasnt full enough i sure wanna know before i screw the new ones up
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Old 09-24-2012, 09:21 PM   #7
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I can stick my finger to the bend point and barely feel fluid and it's a Dana 44
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Old 09-24-2012, 09:23 PM   #8
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Ya I've been looking for my repair manual and can't find it but I did manage to brake a lid to a 5 gallon bucket of paint and stick my foot in it looking for that dam thing lol
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Old 09-24-2012, 09:24 PM   #9
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Checked it and I stick my pinky and I can feel the fluid about 3/4 way down the nail, about 1/2inch maybe less as I'm on the smaller side being 5'6. Should also be near clear fluid should not be dark at all or it needs be replaced.
By near clear its of course in a yellowish tint.
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Old 09-24-2012, 09:28 PM   #10
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Ya mine is no where near clear more black
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Old 09-24-2012, 09:30 PM   #11
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I have always heard it should be to the drain plug
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Old 09-24-2012, 09:31 PM   #12
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How much fluid should be it there should it be to the top of the drain plug please help
Is your diff cover stock? Aftermarket covers move the fill plug up higher so you can't just fill up till it gets to the hole. If you do you will have to clean up all the oil that will shoot out the axle breather hose. Just use whatever the FSM for your axle says to use. The FSM for my 2000 D44 shows the amount of gear oil to be 1.89 liters.
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Old 09-24-2012, 09:31 PM   #13
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Quote:
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Ya mine is no where near clear more black
Yea if I were you I'd most definitely drain it and get new fluid in, black=no good.
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Old 09-24-2012, 09:34 PM   #14
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How do u drain it a small hose
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Old 09-24-2012, 09:35 PM   #15
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Quote:
Originally Posted by mike481

Is your diff cover stock? Aftermarket covers move the fill plug up higher so you can't just fill up till it gets to the hole. If you do you will have to clean up all the oil that will shoot out the axle breather hose. Just use whatever the FSM for your axle says to use. The FSM for my 2000 D44 shows the amount of gear oil to be 1.89 liters.
Mine is stock
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Old 09-24-2012, 09:50 PM   #16
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Quote:
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How do u drain it a small hose
Here you go hope it helps.
http://m.youtube.com/watch?feature=relmfu&v=fKG3fgP9kqI
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Old 09-24-2012, 09:54 PM   #17
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just read the o4 wrangler maunual and it says to the bottem of the fill hole, mines a 97 and said 1/2 inch below the fill hole so i have no clue im tempted to go fill mine up some more..
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Old 09-24-2012, 10:00 PM   #18
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Quote:
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Thanks
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Old 09-24-2012, 10:17 PM   #19
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Quote:
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Thanks
No problem. Keep updated.
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Old 09-24-2012, 11:27 PM   #20
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How much fluid should be in there?
info from my '01 owners manual,

D30 capacity=40 oz.
D35 capacity=56 oz.
D44 capacity=64 oz.
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Old 09-25-2012, 01:10 AM   #21
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My instructors always told me to fill to the fill hole. So thats what I have always done. Serviced many diffs in my life and never had an issue to date.
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Old 09-25-2012, 01:35 AM   #22
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My instructors always told me to fill to the fill hole. So thats what I have always done. Serviced many diffs in my life and never had an issue to date.
Yes, unless it is an aftermarket cover with the fill hole up high. It WILL pump the fluid out the breather tube once it gets warmed up.
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Old 09-25-2012, 07:44 AM   #23
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Mine is stock so I guess I will just fill back up to the. Drain hole when I empy it out today
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Old 09-25-2012, 01:45 PM   #24
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Quote:
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Mine is stock so I guess I will just fill back up to the. Drain hole when I empy it out today
Make sure you use the right fluid, if you have a locker or LSD you need a fluid with additive for that
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Old 09-25-2012, 03:57 PM   #25
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Just did my 44's front and rear, they held about 1 1/2 quart. Also I have read not to use synthetic gear oil as it retains the heat. Currie will void your warranty if you use sythetic oil in your diffs. In my opinion if they say dont do it then I will listen, they have been in the game a long time.
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Old 09-25-2012, 07:31 PM   #26
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Just did my 02 TJ this weekend. D30 took a little more than a quart. D44 took about 1 3/4 quarts. Filled it up to the bottom of the fill plugs.
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Old 09-25-2012, 07:38 PM   #27
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Just Also I have read not to use synthetic gear oil as it retains the heat. Currie will void your warranty if you use sythetic oil in your diffs. In my opinion if they say dont do it then I will listen, they have been in the game a long time.
X2, what you read is correct. I only run non-synthetic Valvoline or Torco in my axles for that reason.
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Old 09-25-2012, 08:12 PM   #28
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The manual tells u if u tow to us synthetic
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Old 09-25-2012, 08:15 PM   #29
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That's what I just put it because I tow a trailer with it some times so what did I screw up again
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Old 09-25-2012, 08:18 PM   #30
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The manual tells u if u tow to us synthetic
Jeep manuals also erroneously said at one time to use a GL-5 75W-90 gear lube in the AX-5 and AX-15 transmissions which was later found to be in error... Jeep later quietly corrected the recommendation to a GL-3 or GL-4 75W-90 gear lube for those transmissions. Most GL-5 gear lubes contain sulphur based additives which are harsh on the synchronizers used in our transmissions.

So you can either believe every single thing the manual says or take it with a grain of salt, your choice. Tests have confirmed the ring & pinion gears do run cooler with a conventional gear lube... which is why many mainstream aftermarket axle manufacturers like Currie will void their axle warranty if they discover the customer used a synthetic gear lube against their recommendation and warranty requirement.

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