Blood that leaves the capillaries is deep maroon in color because red blood cells now contain reduced hemoglobin-hemoglobin that has given up its oxygen and taken on hydrogen ions. In the end, about 85% of the water that left a capillary at the arterial end returns to it at the venous end.
Depending on the vacuum model, this repair can take between 10 and 30 minutes to complete. Remove the Old Vacuum Power Cord. Power cord replacement is a basic repair for all sorts of machines and tools, and removing the old cord is always the first step.
good luck............... As the manuel states disconnect the negative cable from the battery, then there are three studs and one bolt holding the heater box which the heater core is in there are also a few vacume lines and the heater controls that are attached to the box lwhich must be removed..... removed all the duct work, then I found that there are a few bolts that go through the firewall to the a/c box on the engine compartment side. remove the 3 nuts and there is one bolt on the inside right hand side.