over flowing differential WTF plz help - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 01-02-2010
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Icon9 over flowing differential WTF plz help

ok so when out to my truck today and there was fluid all over my rear shock , at first i though i blew a shock , and after looking at it more and feeling the fluid it was the differential oil every thick , not shock oil<i don't think>,

so i took it to the dealer and he said it was the differential oil over flowing out the dump valve , i asked why he say
1) the differential is overheating or 2) there something wrong inside


my questions
1)why is it overheating
2)what could be wrong on the inside
3)any other other reasons for overflowing
4)should i leave it and see if it does it again or take it back to the deal and have them tear in to the rear and have a look around for a arm and a leg
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Old 01-02-2010
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has it just been serviced and refilled lately?

if not pop the cover and find out not hard to do
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Old 01-02-2010
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Originally Posted by Redneckstone View Post
has it just been serviced and refilled lately?

if not pop the cover and find out not hard to do
nope it hasn't been touched since i got it
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Old 01-02-2010
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Take off the cover and find out your self.
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Old 01-02-2010
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ill take a look around , bout i will see anything lol
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Old 01-03-2010
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Its either overfilled or got water in it.

What ever it is the cover needs to come off so you can drain it and refill correctly.
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Old 01-03-2010
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Its either overfilled or got water in it.

What ever it is the cover needs to come off so you can drain it and refill correctly.
how do i refill it correctly and with what oil
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Old 01-03-2010
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bump
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Old 01-03-2010
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Your owners manual will tell you what oil. If you actually go look at your diff you'll see a fill hole on the backside, it just takes a 3/8" ratchet to remove the plug.
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Old 01-03-2010
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Your owners manual will tell you what oil. If you actually go look at your diff you'll see a fill hole on the backside, it just takes a 3/8" ratchet to remove the plug.
ok
i was talking abou how much it use , but im guessing it in the book
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Old 01-03-2010
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takes approx 3.5 quarts of 80w90 oil. if it is a limited slip you will have to add friction modifyer additive to the oil. make sure the vent line is connected to the axle properly and secured to the drivers side frame rail, also make sure it has no rips or tears in it. is the pinion seal leaking? where the driveshaft bolts to the rear axle, in that area. im not sure what this "dump valve" is. also drive it about 10 miles and see how warm the diff cover is. you should still be able to touch it.
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Old 01-03-2010
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also, and this is important. before you drain anything or remove the cover, make sure your filler plug is not stuck. would suck to pull the diff cover or drain the fluid and realize that you cannot refill it. so loosen it first, then tear it apart.
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Old 01-03-2010
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Just pull the fill plug to see if it's overful
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Old 01-03-2010
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I really dont see how it would get overfilled... you fill it till it starts coming out of the fill hole then put the fill plug back in it
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Old 01-03-2010
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Did the dealer not want to check it out?
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Old 01-03-2010
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Did the dealer not want to check it out?
they were busy lol
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Old 01-03-2010
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weekend shift for you
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Old 01-03-2010
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weekend shift for you
Well it literally takes 20 minutes to do a drain and fill. If you drive it for a prolonged period of time with it overheating...you may be looking at a new rearend. I would take a gently used rear end versus resetting all the internals.
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Old 01-03-2010
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Well it literally takes 20 minutes to do a drain and fill. If you drive it for a prolonged period of time with it overheating...you may be looking at a new rearend. I would take a gently used rear end versus resetting all the internals.
thinking i can do a simple drain and refill at the house cant be not harder than changing your oil
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Old 01-03-2010
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thinking i can do a simple drain and refill at the house cant be not harder than changing your oil
OMG this How to is buried and not listed in the How To Section...It took me forever to find it using the search feature....

https://www.ranger-forums.com/forum2...ial-cover.html

Just like that minus replacing the cover. Hope it helps.
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Old 01-03-2010
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Originally Posted by Hillyard View Post
OMG this How to is buried and not listed in the How To Section...It took me forever to find it using the search feature....

https://www.ranger-forums.com/forum2...ial-cover.html

Just like that minus replacing the cover. Hope it helps.
dude i was looking for this as well
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Old 01-04-2010
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Depending on the height of your truck and how high you can get it. A fluid pump might be needed to get the lube in the diff. I needed one because of the rear sway bars IIRC.

They are less than 10 bucks and often located with the gas siphon stuff.
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Old 01-04-2010
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it hasnt over flowed since and it not over heating anymore should i still have it looked at
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Old 01-04-2010
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The fluid pump will just make the whole process either. Its pretty messy trying to get those bottles upside down to get the fluid in there and the stuff does not smell the greatest to begin with. Make sure to have a roll of towels handy during the process.
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Old 01-04-2010
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