Mrmerlin

hey if you cant get the plug loose try getting a torch and heating the surrounding area you might see smoke from the drain plug but after heating then try using the the short allen key if that doesnt work then go the hit the plug on the side with the hammer/chisle this should breake it free

hacker-pschorr

It is Snap-On..... Ok, so maybe it's not all that fancy. I'm up early!!!!

It's just very shallow - just enough on one end to fill the plug, and just enough on the socket end to hold the wrench:
http://buy1.snapon.com/catalog/item....group_ID=19859

Friend of mine has one of these:
http://buy1.snapon.com/catalog/item....&group_ID=1555

Ben

I sometimes use a product called 'Rost Off Ice', made by Wurth. It basically works in the same way as heating, but it actually freezes the bolt/nut/plug that you spray it onto to break the corrosions hold. It also contains a penetrant.
I've used it on other aluminium parts in the past, and it worked a treat.

Oldtee

Try to tighten it just a very little bit first. Then use the Snap on allen to take it out. Its worth a try.

Ed Hughes

I suppose that WOULD work, but IMO, that kind of thinking and project completion is what has decreased the value of many a 928....sorry, but that's my perception. That is just another form of deferred maintenance.

heinrich

I have to agree with Ed

heinrich

best results i have had have been with an allen wrench and breaker

blown 87

The part number for the 3/8 drive Snap-On drain plug 17 MM socket is cpt110a. This one is what we use at my shop.
link.

http://buy1.snapon.com/catalog/item....re&dir=catalog

I think they also make one in 1/2 drive, but we have never needed it.

The Wurth rust off is ok, but if you ever use InForce by BG you will never use any other penetrating oil again.

I can not remember if there is room for a hammer type impact in there or not, but a good hammer driven impact (read Snap-On) will get them out when nothing else nondestrutive will.

If you have a way to heat the cover and not the plug that might help also, just do not get it to hot, say 350 or so.

they also make a wrench for this, 21 MM box/ 17 MM external hex. I have never used this one, but I know mechanics that do use them.
link.
http://buy1.snapon.com/catalog/item....re&dir=catalog

Brett Jenkins

What's the preferred diff oil for a climate like Indiana? I don't have the manual, what's the capacity?

Jim bailey - 928 International

capacity manual 78-85 3.8 liters 86> 4.5 liters automatic diff is 2.7 liters up to 87 then aprox 3 liters. And yes you want to remove the fill plug FIRST. taking of the rear diff cover is easy and allows you to work on the stuck drain plug on the workbench or with air/power tools. The gasket is just a thin paper gasket nothing special...

tomcat

I have a similar problem except I can't get the drain plug off. I have an allen socket and a 3' breaker bar, and tried a 300ft-lb torque wrench to no avail.

What do you think about using a gasket maker (silicone) when putting the cover back on?

Jim bailey - 928 International

The diff rear cover gasket is $2.00 or you can make one yourself

hacker-pschorr

Remember:

Righty - Tighty
Lefty - Loosy

http://www.urbandictionary.com/defin...ty+lefty+loosy

Hey, you never know

ceedee

****...now i know why the car flipped over on the roof , when i tried to losen it... lol

tomcat

I've been (and always have been) lazy. I've tried to make a list of things to order along with the gasket but keep putting it off. I thought it might be easier to sell the oil.

Are you sure? Don't the directions change when you're upside down?