Trying to order new bearings and seals for my rear axle on my 93 W250 and the parts store keeps asking if its an HD 70 or a normal 70. How do I tell the difference? I would have assumed the Hd70 was a dually but they say no. Also ate the break pads 11" or 12"? I know I could pull it apart to see but they are having to order the parts and I can't afford the down time.

 

I'm not sure about HD or not but im pretty sure the duallys and 3/4 tons have the same axle.

 

It's a 70U, not HD. Brakes are either 12x2 1/2 or 12x3. 12x3 are aneasy upgrade from 12x2 1/2. Simply turn the drums, install 12x3 shoes, put back together.

 

Would the 3" pad have been an option from the factory? Pulled the drum and its got 3" pads. Neither the original or 2nd owner know who swapped them out if it wasn't a factory option. The original owner had it serviced at the dealership and the 2nd owner never replaced the brakes.

 

I have seen the 3/4 tons with 3" shoes and also the 2 1/2" shoes. Don't know if it was a specified option, or just luck-of-the-draw.

 

That's a cool little bonus I guess