Drivers side, horizontal bolt goes on perpendicular to the direction of travel (unless you can talk your diesel into a four wheel drift). 

The bolt doesn't pull all the way out, but opens a hole in the bottom of the pan adjacent to the bolt. 

Karl Wolz
Sent from my electronic umbilicus

> On Jul 2, 2014, at 5:29 PM, Mike Miller <mwmiller6@ATT.NET> wrote:
> 
> Hi there vanagaunts,
> 
> Went to change the oil for the first time on my diesel conversion, AHU.
> 
> Certainly not the standard oil drain plug anywhere to be seen. But a bolt with allen head in the side of the oil pan [I think it's the pan at least].
> 
> It appears to be a 5.5mm allen fit but man is it tight!
> 
> Is this the oil drain on an AHU, is this the right size, and how hard should it be to get it out? I'm looking at using a small pipe wrench, which seems to me to be a bolt that is Way to tight, or it's not the drain plug at all.
> 
> Anyone?
> 
> Mike