adding differential drain plug

[Jerry Scott[CO]]

I soon will take out my differential to add a drain plug, but I have some questions.

1. What size do you drill and tap the hole?

2. Do you use a Time-Sert to line the hole with steel so that it will not wear out?

3. If using a Time-Sert will you get a galvanic reaction between the steel and the aluminum? They have both steel and stainless inserts.

4. Where do you find a drain plug that has a magnetic core?

 

[Ulysses]

Jerry,

There was a thread going on this same subject a few days ago. I think someone posted a part number too. I guess the tap hole is subject to which plug you get. Inserting a steel sleeve will definitely cause a battery effect unless there is some sort of coating. Stainless won't react as fast, but it will eventually.(can't remember which section the thread was in)

 

[Marv S]

Jerry, Maybe call Devin at Unitrax on this one. http://www.gounitrax.com/UNITRAX/pages/viper.html

 

[Jerry Scott[CO]]

Joe - It is very difficult to get all of the fluid and metal particles out with a vacuum pump. You will find that the gears are very close to the fill hole and that you will need a flexible rubber hose. That's a good idea regarding matching the fill plug and I will look into it. I am also concerned that an added plug might cancel the warranty if you had to send it back to Dodge.

 

[ACR Joe]

I've been considering changing the differential fluid in 99 ACR. Why not just **** it out through the fill hole? Less residual? I'm not sure installing a drain plug is worth the effort. Also as far as which metal drain plug to use, I would match that of the fill plug.