Changing rear diff fluid (91 XJ): don't want to R&R the diff cover...

Doug did pass the time by typing:

It works just fine for routine changes and when you don't want to inspect anything. Make your life a bit easier and get a good quality suction gun/pump and collection jar. I use a glass jar because to get the lube out easily you should take a nice drive for a few miles to heat up the lube.

I always recommend opening up the cover for the first change and then figure pumping is safe after.

The first change will have metal in it, subsequent changes should only be needed to pump out water.

Don't forget to follow the directions on the gasket sealer/maker you use. Lots like RTV need 24 hours to cure before you add fluid to insure they don't leak.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's

Doug wrote:

Thanks Mike, the rear cover is going to have to come off then.

What is the aversion to removing the diff cover?

Raise the vehicle by the frame and let the axle hang, remove the bolts, but leave a couple in to hold the cover on, insert a putty knife and let the oil drain out.

This is the only vehicle I have and it takes 24 hours for the RTV to dry.

I put a spot light or portable electric heater pointed right at the cover if I want to push it and say fill it early next morning or when the temp is really cold out.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's

Doug wrote:

Doug did pass the time by typing:

They make fast set RTV.

the package for Hylomar HPF, I think it's readyin under 12 hours.

Or use gasket shellac, should set in a very short time.

John

L.W. ("ßill") Hughes III did pass the time by typing:

Next time use a bit of this to strip it off, it works amaz>>