28 VETTE 19.07
[ TECH]
18
Install the new foam gasket onto the blower motor hous-
ing. After scraping off the old gasket, apply 3M weather-
strip adhesive, or similar, to both the housing and the new gas-
ket. Let them sit for a minute and then press them together. You
don’t want this gasket to slip during assembly.
20
Reinstall the wiring harness connectors. This is easy;
each plug is different so it’s hard to make a mistake.21
Replace the desiccant bag and filter screen in the VIR.
This should be done any time the air-conditioning sys-
tem has been opened to replace a part. Wait until it’s time to
install the VIR before opening the desiccant package and
installing the desiccant.22
Corvette Central’s VIR maintenance kit (left) has the
desiccant bag, filter and lower O-rings. Their A/C O-ring
kit has all the other O-rings necessary for the other A/C parts.
Lubricate the O-rings and install the VIR or other A/C parts. The
mechanical work of replacing the evaporator is finished. That
wasn’t so bad, was it?
19
Slide the evaporator housing back into position in the
engine compartment. Loosely install the two upper
screws and nut before going under the car. Tip: spring clamps
can help compress the rope sealant and an ice pick can help
align the parts to enable the one interior screw to be installed.23
Connect a vacuum pump to the system for at least 30
minutes to draw any moisture out of the system. This is
also a useful check for leaks before installing the refrigerant.
If there is no moisture in the system, a new evaporator should
cool your cockpit for decades.