I just tore apart my 87 300TDT rear accumulators and SLS valve. The accum. are shot and after very very much ranting and raving I got them off w/o breaking anything. I also took the valve off as the lines into it are quite rotten. So my question, one of the lines that go to the accumulators has a small "pin" in under the fitting that sits in the hole where the fluid comes out. What is this for? It is loose and falls out, not sure if it is broken or from somewhere else. Anyone have a schematic of the valve? Also anyone know the size of the line and fittings from the pump?