Ford 7.3L Power Stroke (1999-2003) :: F250 - Changing Rear Diff Fluid?
Mar 21, 2017
I am changing the rear Diff fluid in my 1999 F250 Super Duty with limited slip differential. I have read in the manual that 8 ounces of friction modifier is required, ford dealer said it only required 4 ounces. I bought 8.
Also I asked for a inspections plate gasket and ford said use silicone... When I removed inspection plate it had a gasket. So, silicone or gasket or both? Differential capacity is 6.9 pints 75w/140w synthetic.
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I seem to not be catching a whole lot of luck lately. The rear end on my F550 has a bunch of play. Going reverse to drive it clunks pretty bad but no ujoints are bad. I can rotate the yoke by hand and hear clunking so i am guessing the ring and pinion are bad, at 100,000 miles. Seems like the rear ends should be more stout than that, certainly look it.
Where to find a source for reman third members since this one had a drop out? Most axle places won't touch it
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I just picked up an 09 F250 a couple of weeks ago and I was planning on replacing all the fluids since I'm not sure when everything had been done in the past, but it did pull a camper 5th wheel. It has about 93000 Km/57000mi on it
One thing I noticed when reading the manual is that a rear diff fluid change is not necessary on these rear axles unless they have been submerged in water or repaired etc..
Just after I got it I noticed the pinion seal was leaking. It was fixed under warranty but the dealer did not replace the diff fluid as they said Ford will not pay for it.
My question is do you think I need to replace the diff fluid or should it still be good, given the relatively low mileage.
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my first diesel, and second 2002 f250. I picked up my 7.3 4x4 automatic CCSB last week. 202k on the odometer. I need to change the air filter but idk what to use. I don't think it's stock. The side of the air box says aFe. What the part number for the filter is? I don't see one on the filter anywhere.
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I have a 2001 F250 Super Duty V8 7.3 L. I removed the water-pump then waited five days for the oring for the new pump. I installed it and now the truck will not start. I have drained the fuel water separator and replaced the filter. On the passengers side through the kick panel I found that button popped out so I pushed it back in and still it will not run. It acts like its not getting fuel but if my fuel water separator is filing up I'm assuming mu fuel pump is working??
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I have a 2000 F250 4x4, it has been sitting in my garage for about 3 weeks. I cranked it up and backed it up about 10'. A few hours later I noticed a lot of transmission fluid on the floor. I remember hearing a hissing sound when I cut it off but didn't think anything about it. The fluid is on passengers side of truck, right side of the engine. Most of fluid is toward the rear but some ran down in front of the axle also. It's up high also, I've got fluid on rear of valve cover. I've cranked it up and let it run but can't get it to leak. Where did all this fluid come from?
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I have a pretty good leak coming from the front of the rear diff. is this a common problem on the 10.5 ? How hard are these to do without a lift? I still have warranty left but will have to swap out exhaust so its almost a toss up whether I do the seal myself. Also was considering a new posi unit because seems like the original is about toast, might be a good excuse to swap a new one in. 2009 with 95,000 on it. Bought it a year ago with 70,000 on it, the rear was dry till at least 90,000. I serviced the fluid at about 90,000 and didn't have a leak so now a couple thousand miles and its gushing???????
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2002 F250 diesel ... I found these two plastic pieces yesterday on the floor near the 4X4 shifter. I noticed the other day when i step on the brake the rear view camera in the head unit comes on, so i am thinking they are either a part of the brake switch on the pedal assembly, or something to do with the shift tube.
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I just bought this Super Duty with a 5.4L engine. I want to do a fluid change on the transmission. From what I read, this transmission needs to be hot flushed in order to change out all the fluid. I have not called my dealer yet to see if they do hot flushes. If my local dealer does not have this machine, can I just drop the old fluid from the pan and be ok? I have not gotten under the truck yet to see if it has an external filter.
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So I'm off work today, and want to service the transmission. I've got both filters, and a 18 quarts of SP, but am not familiar with this transmission, and understand there's no drain plug for the converter. Want to get all of the fluid out, best I can. I'm at 153,000 on this truck with no issues. I do not desire to flush, just want a fluid change.
Searching the forums brings up a lengthy list of transmission threads, but nothing yet that gives me the step-by-step.
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While I have routinely seen a little fluid seep from the bottom/back of a Rear Diff, I have never seen it from the front where the drive shaft enters.....until I looked under my '12 F150 yesterday. Have any of you had this problem on your truck? It is at 86,000 miles. Mostly highway, with some 3000lb towing on weekends. I may have until failure?
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I have a 2011 F350 SRW with 3.55 differential. I'm was going to change the fluid, however, what type do I use? The manual calls for 75-90 with the Dana rear end or 75-140. How do I know which rear end I have? Is there a build sheet with code on the vehicle anywhere?
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Iv heard a few things about changing the valve body. I tow a trailer so was wondering on pros and cons of changing this. And also what brands are recommended.
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My shift indicator switch on the trans seized up, so a local trans shop replaced it for me. Now I get no low range when I select it. I understand it needs to see the truck in neutral to do this, is there a simple adjustment? The trans shop is a long way away.
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While turning very slow and sharp on the farm, I heard a pop under the hood. I then lost power steering and brakes. I saw power steering fluid spurting in the left tire well behind the tire. Look under hood and saw fluid coming from a fitting on the side of the power steering pump. I have attached a photo....one photo with nothing and then other with a screw driver tip on the fitting.
It appears that the the pressure fitting blew out the side when I turned sharp. It has a nut from which it came (compression of some sort?). I can push the nipple of the fitting back into the nut but I guess the pressure is gone.
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Put in my new S&B intake today and when I stomp on the gas I am getting a loud shuddering noise from the intake when I change gears. Also sounds like a squealing sound sometimes. Doesn't sound like other trucks that I have heard. What that could be?
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I just noticed a small leak (red PS fluid) coming from the rear of my hydroboost in the truck (while working on my shift tube replacement this past weekend). The carpet is not wet, but there is a drip hanging on the rear end of the HB waiting to start leaking itself on the carpet. Also, there appear to be no issues with either braking or steering -- all is smooth, firm, steady, and quiet.
I have nearly 290K miles on the truck, replaced the Master Cylinder probably 8 years ago at roughly 150K miles. I no longer spend nearly as much time on the road as I used to (probably 8K miles per year now compared to a previous eight-year long run at 18-20K miles per year.
Questions.
1) Should I go ahead and replace the HB before it gets worse (I don't know how fast the fade when they start this process)?
2) If I replace the HB, should I go ahead and proactively replace the MC along with it since I'll have the whole system wide open?
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I have rust everywhere but mostly surface rust. For those who use fluid film, should I just buy a few cans and paint the whole under truck with it? Do you wipe off access?
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My transmission on my 2002 7.3 4x4 is pouring fluid from somewhere above the rear of the pan. I thought it was the pan at first. I pulled it off and replaced the filter. After adding fluid while it was running for 4 or 5 minutes it started pouring again. It's not the pan. It's coming from above the pan somewhere. It won't leak unless it's running. Is there a place it can leak on top??
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2005 Ford 350. I want to change the ball joints on the front axel and I cant remove the axle out of dif. to remove the ball joint housing. I have been prying and pulling and it just moves out a 1/4 inch or so .They tell me there is no ring to remove in dif before you can pull it out but why this trouble?
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I don't have ready access to my truck and I'm trying to buy new cooling parts when I rip out/replace my transmission. I searched the forum but can't find the simple answer I'm looking for regarding the route of the transmission fluid for cooling.
In my 2001, I thought the fluid comes out of the transmission to the radiator, then back to the transmission from last time I was looking at it underneath. But in the forum, it sounds the fluid would come out of the radiator and then into the air cooler in front of the radiator before back to the transmission.
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