This LoneStar HVAC system service manual, publication S16039, documents the front and rear heat, ventilation and air conditioning systems on International LoneStar and ProStar trucks for 2007. It combines system description, component detail, R-134a service procedures and pressure-based troubleshooting in one 191-page volume. Both the dash-mounted front unit and the sleeper unit are covered, with digital or analog controls depending on trim level.
Official document details
| Brand | International Trucks (Navistar) |
| Model coverage | LoneStar, ProStar |
| System / Group | HVAC |
| Publication no. | S16039 |
| Year | For 2007 (rev. 04/28/2009) |
| Pages | 191 |
| File size | 8.8 MB |
| Format | |
| Language | English |
What the LoneStar HVAC system manual covers
- Safety precautions for working with R-134a refrigerant
- Front HVAC system description, air distribution and refrigerant flow
- Components: compressor and clutch, condenser, filter-drier, thermostatic expansion valve, evaporator and heater core
- Blower assembly, linear power module and HVAC control panel operation
- Rear (sleeper) HVAC system description and components, running in recirculate mode
- Pressure diagnostics: high head, high suction and low suction conditions
- Air door actuator service, special tools and the EZ-Tech electronic service tool (EST)
Applicable truck models
The manual applies to LoneStar and ProStar cabs, covering both the front dash unit and the sleeper (rear) unit that draws air through a bulkhead filter and runs in recirculate mode 100% of the time. Troubleshooting tables tie symptoms such as high head pressure to causes like a plugged condenser, overcharge or a fan not operating properly. The manual also defines the thermostatic expansion valve as the dividing line between the high and low pressure sides and explains the suction side service port and thermistor sensors. Verify trim level and control type, digital or analog, against the International Trucks website.
Who needs this LoneStar HVAC system manual
A/C technicians and sleeper-cab specialists use this LoneStar HVAC system manual, S16039, for refrigerant charge troubleshooting, safe R-134a recovery, and the actuator drive-collar procedure that uses a 9-volt battery across the connector pins. Federal and state law requires that refrigerant be recovered and recycled, so the manual stresses using approved recovery equipment. The full PDF sits in the DiagTechPro manuals library, free account required to download.
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