mxbeaver513

This 1980 mack was a cement truck. It has a 20 foot grain bed on it now. We had a salvage yard swap motor a few years back. It has the old canister oil filter not the screw on oil filters. It had very low oil pressure and the salvage yard told me the motor came out of a very old truck (maybe 69) and had set for 10 years with out running. It ran good but low oil pressure. we just used it for a summer then parked it. We never use it for 6 years now. Recently I start it up and it runs good. but after driving it the turbo started howling so thats when we determine its not got any oil pressure. So iam thinking its maybe really wore out but still a mack and refused to die. I find a place in kansas city that has several old cement truck he is scraping and has the motors and 6 speed trannys (mid 80)he will sell for $1500. thanks again

I took off the line from turbo and it just drips. I found a motor and tranmission for sale. I want to ask you guys how should I remove and install a different motor. should I pull the motor by itself or should I pull motor and tranny togeather. This site is very imformative. Thanks

yes thats were Iam right now I take off the line n put a cheap gage on and nothing. then I took off the line n just let it hang n still just a few drops running. the door tag says it is a model RWL785LT vin #RWL785LT51690 what should i do next?

I have a 1980 mack 785LT. what model of motor is in this truck. Its not putting any oil out oil pressure gage line. I need to replace motor maybe