Over the last several months I have contemplated what to do with this 15k lb Beast in the driveway. I decided to do what I always do, watch a ton of YouTube videos until I knew how to fix it myself. So I decided I’m going to put some money into replacing the injectors and batteries and see how it runs after. So I bought some reman injectors from Pensacola Diesel, some injector tubes, fuel pump, fuel filter, starter, 2 new batteries, Oil and filter, trans filter, Alternator voltage regulator and went to town.
Removed mattress, found a hatch 
OH! a hatch to access the top of the motor 
Easy! 
Valve cover off 
Injectors out in an hour 
time for the voltage regulator 
pic of the back so I can put it back together right 
another pic 
WHY! The previous guy put in deep cycles for starting batteries. These came out and I put in some new Napa Batteries. The old batteries are toast but i’ll use them as house batteries for now. 
Battery Cutoff, neat! 
Old Fuel filter, didn’t look too bad 
part number pic