Fleetwood FWD V8-300 4.9L (1993)
Service Port HVAC: Description and Operation
DESCRIPTION AND OPERATION
The service ports allow the technician to access the refrigerant system for evacuating, charging and diagnosis.
The primary seal for the service ports is the sealing cap. This cap contains a specially designed seal (0-ring) or gasket which provides a leak-free
seal. Should the cap be loose, missing, or the wrong cap used, it will result in the loss of refrigerant charge. Make sure the cap has a rubber seal.
Refer to TSB# 92I24 dated January 1992
All 1992 Fleetwoods will be equipped with a new A/C high pressure service port assembly. The A/C low side pressure service port will remain the
same.
The new A/C high pressure port (Figure 1) is not designed with a depressor pin compared to the older port (Figure 2) which has a depressor pin.
The new A/C high pressure port will require the use of two special tools for servicing.
