RalphL
Backyard Mechanic
Registered: 09/11/02
Posts: 291
Loc: Woodbridge, Virginia
I was checking out the cooling system on my 39 Mstr Dlx and I noticed something the previous owner didn't connect correctly. My book shows the heater hose from the water pump going to the top connector on the heater and the bottom heater connector going back to the thermostat housing. Mine is hooked up just the opposite with the heater hose from the water pump going to the bottom of the heater.