Vacumn Pump is leaking, where can I find the oil seal and O-ring for it?
Although Cummins and Dodge want you to shell out the bucks for a new vacumn pump when this happens. There is a much cheaper alternative. You will need the oil seal which is 28x38x7, Chicago Rawhide part # 10924, National part #28x38x7 or Napa part #47676 The metric o-ring seal is 55x59x2mm Written By: Monty 85. HVAC Diagnostics and Principles of Operation Question: Answer: Refrigerant flow cycle: 1. Compressor- Compresses the refrigerant into a high pressure, high temperature gas, moving it through the system. 2. Engine Fan- Assists heat transfer by moving air across the condenser 3. Reciever-Dryer- Stores, dries and filters the refrigerant 5. Expansion Valve- Meters the refrigerant flow and acts as a boundary between the high and low pressure sides of the system. Refrigerant enters the expansion valve as a high pressure high temperature liquied and is expelled as a low pressure, low temperature mist. 6. Evaporator- Refrigerant vaporizes at a low pressure (low temperature) in the evapo
