Dad and I bought a 1975 Mack r model. It has the 5 speed and the transmission has an aluminum housing. We are planning on pulling a dump trailer so we put together a wet kit. Got the pto from a salvage yard and we had a direct mount pump from a truck we parted out. Plumbed it up and now we can't get the trailer to do anything. Does the pto turn opposite from a fuller ?
Mack 5 speed question
