AMC Eagle Den Forum

The Shop => Axle / Differential => Topic started by: kevindpm61 on January 29, 2016, 05:19:58 PM

Title: Front and Rear Differential Fill Plug Size
Post by: kevindpm61 on January 29, 2016, 05:19:58 PM

My son and I will be attempting to drain the old differential fluid with a suction pump and refilling afterwards. The car is not at my house and I was wondering if the fill plugs require Allen wrenches or some other tool? What size wrench is needed to remove the plugs?

Title: Re: Front and Rear Differential Fill Plug Size
Post by: mudkicker715 on January 29, 2016, 06:50:07 PM

3/8 square. Iirc

Title: Re: Front and Rear Differential Fill Plug Size
Post by: vangremlin on January 29, 2016, 10:03:38 PM

On my 1980, the front differential requires a 5/8" wrench.  Good luck.

Title: Re: Front and Rear Differential Fill Plug Size
Post by: kevindpm61 on January 29, 2016, 11:09:15 PM

Thanks for the answers gang.

Title: Re: Front and Rear Differential Fill Plug Size
Post by: carnuck on February 05, 2016, 01:02:02 PM

I plan to reseal the '80 front axle I have with new bearings (I hope) and install it already filled with synthetic oil. They didn't make a drain on the bottom and the fill is hidden behind the engine crossbar.

Title: Re: Front and Rear Differential Fill Plug Size
Post by: kevindpm61 on February 05, 2016, 08:06:51 PM

I plan on removing the plug and using a pump to remove all the old fluids. I bought a hand unit at HF and I'm ready to give it a try.