Air Valve Leak

[davidbrady]

Take a magnet with you Chuck and show them that it's aluminum.

The issue with the oil cooler is access. If you could walk right up to the engine it would take maybe 30 minutes to replace the o-rings. I had a good look at my bus to see what needs to be removed to gain access. I figure they'll need to remove the engine hatch in the bedroom floor and possibly remove the turbo from there. Underneath they'll need to disassemble the shrouding that covers the base of the radiator and remove the lower radiator tube which means dumping the coolant. At this point I think there should be adequate access to get to the 5 or so bolts that hold the cooler housing to the engine block. The cooler housing also has a silicon heater hose tap which I believe is connected to the Aquahot loop. It also has the 120VAC block heater attached to it. Then there's the possibility that one or more of the bolts holding the cooler to the engine block are frozen resulting in a snapped bolt. Then everything needs to be buttoned back up. A five hour estimate sounds about right.

As far as replacing the PTO/Pump assembly, I think you're looking at around 5 hours there too.