Turn both manifold gauge set valves all the way to the right to close the
high and low-pressure hoses to the manifold center hose. A Rotunda Adapter
D81L-19703-A, Motorcraft Tool YT-354 or 355 or equivalent must be used to
connect the manifold gauge set or charging station to the high-pressure service
gauge port valve.
Remove the A/C charging valve caps (19D702)
from the high and low-pressure service
gauge port valves.
If the manifold gauge set or charging station hoses do not have valve
depressing pins in them, install Fitting Adapters T71P-19703-S and R (which
have pins) on the low and high-pressure hoses.
Connect the high and low-pressure hose adapters to the respective high and
low-pressure service gauge port valves. The adapter shown must be used on the
high-pressure gauge port valve.