The ProStar HVAC system service manual is the 191-page International heat, ventilation and air conditioning section, publication S16039, covering both the front and rear (sleeper) units on ProStar and LoneStar tractors. Issued by Navistar for 2007 vehicles, it details component operation, R-134a refrigerant service and pressure-based troubleshooting.
Official document details
| Brand | International Trucks (Navistar) |
| Model coverage | ProStar, LoneStar |
| System / Group | ProStar / HVAC |
| Publication no. | S16039 |
| Revision | 04/28/2009 (for 2007) |
| Pages | 191 |
| File size | 8.8 MB |
| Format | |
| Language | English |
What the ProStar HVAC system manual covers
- Safety precautions and general description of the front HVAC system
- Air distribution and A/C refrigerant flow
- Front components: compressor and clutch, condenser, pressure transducer, filter-drier, thermostatic expansion valve, evaporator and heater core
- HVAC control panel and electrical system overview
- Rear (sleeper) HVAC system description and components
- R-134a service procedures, charging warnings and special tools
- Troubleshooting tables for high head pressure, low suction and refrigerant charge
Front and rear units
The front system supplies the cab, while the rear HVAC control panel on the sleeper wall runs in recirculate mode with its own thermostatic expansion valve and blower. Both use R-134a refrigerant, and the manual gives the pressure symptoms, such as high suction with normal discharge, that isolate a stuck blend door or a leaking heater-core shutoff valve. The manual also lists the special tools, including the electronic service tool (EST) EZ-TECH, and defines terms such as suction pressure and thermostatic expansion valve.
Applicable truck models
Procedures apply to International ProStar and LoneStar tractors of the 2007 series equipped with factory front and optional sleeper air conditioning. Confirm trim, controls (digital or analog) and refrigerant type against the vehicle on the official International Trucks website, and match the engine and refrigerant charge specification before servicing the system.
Who needs this ProStar HVAC system manual
Air conditioning technicians diagnosing weak cooling, blower or actuator faults use this ProStar HVAC system manual to read the correct R-134a refrigerant pressures and trace the HVAC control panel circuits before replacing parts. The full PDF is available in the DiagTechPro manuals library, free account required to download.
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