Question about 1994 Ford F350 Crew Cab

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1993 Ford F-350 4x4

How does one check or add gear lube to the rear end, my diff. cover is solid with no plug., was this one of Fords better

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Look on the passenger side up about 6 inches from the bottom of the rearend.. it takes either a big allen wrench or a 3/8 socket..take that plug out and stick a piece of wire down in there or your little finger to test where level is . thanks jerry holler if you have more

Posted on Feb 05, 2009


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1995 ford f150 both drums have small metal dust has play in rear end and sounds grinding on both sides wheel bearing or gear bearing what to do

It sounds like it could be in the rear diff not the bearings normally they make a roaring noise. Have you tried cleaning and adjusting the rear brakes. I would try that and see if it helps

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2 Answers

There is no way to check the rear diff leveal so how do you fill or add if the diff plate was remover?

There is a fill plug on the front side of the differential. Look close, it's a flush type pipe plug, probably with a square recess about the size of a 3/8 socket hole. Usually rusty or covered in grime. Remove this plug and fill until lube runs out. It should be located about half way up from the bottom of the diff. housing.

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How do I change my rear end fluid or check it? And what kind of differential fluid would i use for a limited slip rear end?

To check the fluid there wil be a plug on the side of the Reese diff housing. Use w 3/8" ratchet to remove the plug. The fluid should be level with the button of the hole. To change the fluid first remove the fill/check plug as described above. You always want to make sure that plug comes out first so you know you can fill the diff after your done. Then place a drip pan under the read diff and remove all the bolts that hold the diff cover top the diff housing, roughly 10-12 bolts. Then carefully pry the pan away from the housing. Let the gear lube drain while you cean the gasket meterial from both the cover and the differential housing. You can either get a new gasket or you can use a good RTV type gasket maker. I prefer the higher end GREY products myself. Lay a pencil size bead around the differential. Reinstall the cover tightening the bolts to just barely snug. The RTV should just start to push out from behind the cover. Let it sit for about a half an hour and then do the final tightening. I am almost 100% positive that the rear diff talks regular 80/90 weight gear lube. Your local parts store will be able to conffirm the correct lube and the quantity, approximately 2-4 quarts depending on what size ring gear you have.

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1 Answer

How do you add gear lube to the rear end?

There is usually a plug on the rear axle differential that you remove (hex wrench)
You add lube with grease gun flexible tube .Fill to the bottom of the hole
(until you can feel the lube beneath the inside of t;he rim of the hole

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1 Answer

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1 Answer

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1 Answer

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