This manual has been designed and written for your use. Take your time reading it. Study the illustrations, charts and photos. Figure 1 shows a typical HVAC system (heating, ventilating, air conditioning) installed. The illustration is cut away so you can see component locations. All of the main components are labeled, connected together and positioned approximately as they appear in the vehicle. These components may differ from one cab to another. There could be other system devices for safety or perhaps sleeper cab comfort. This service manual document contain 12 chapters as follow: Introduction, Air Conditioning /Heating Function, Overview of System Operation, Truck and Heavy Equipment Systems, Air Conditioner-System Operation, Heater Components and Controls, Engine Coolant or Anti-freeze, Cooling System Thermostat and Radiator Pressure Cap, Water Pump, Heater Components and Controls, Air Conditioner Components, System Controls, Service Tools and Their Use, Inspection and Maintenance–without gauges, Discussion of Inspection & Maintenance Survey Results, Visual Inspection, Electrical System Inspections, heater System Inspection, Preventive maintenance worksheet, Troubleshooting & Service Procedures, Troubleshooting Overview, Understanding System Function, A Troubleshooting Example, Refrigerants, Component Repair or Replacement, Typical HVAC Systems and Components, Retrofitting an R-12 System, Glossary, Figure Index.
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