FDM Removal
Once the lock ring is removed, break the O-ring seal & lift the FDM from the tank. The reservoir will spill, and the pickup screen will spray fuel as it comes out. The O-ring should never be re-used.

That white object in the tank behind the float arm is a piece of silicone that somehow found its way into my tank. There are a few others in there, and occasionally, the truck would stall when they got pulled around the pickup filter, and blocked the flow of gas into the pump. I guess vandals stuffed them into the pump nozzle at the gas station.

To temporarily or permanently convert a '90-up 2-tank truck to a single tank, read this caption:

Owner caption July 2003 · Photo 181 of 5000