how do you remove the front differential drive shaft seal on 1990 Chevy

[Maverick]

Silverado 2500? Trying to replace the front differential drive shaft seal and the seal that goes to the drive shaft on the transfer case. The truck is diesel and is 4x4.

 

[David L]

Take a cold chisel and a hammer and beat on the edge of the seal enough to warp it enough to remove it. Use a seal installation tool to put the new one in. Auto Zone or NAPA will probably lend you a tool to put a new one in.