How much Freon does a 6.7 Cummins take?
On most 6.7-liter Cummins-powered Ram pickups and chassis cab models, the air conditioning system is charged with about 2 pounds (roughly 0.9 kilograms) of refrigerant, typically R-134a. The exact amount depends on the model year, the A/C component configuration, and any prior service work.
Understanding the 6.7L Cummins A/C system
The 6.7L Cummins diesel uses a standard automotive air conditioning system. For most of its production run, these systems have used R-134a refrigerant. Some late-model or retrofit configurations could use alternative refrigerants, but R-134a remains the common standard for these trucks as of now.
Determining the exact charge for your truck
Because the required charge can vary by year and individual equipment, the best source of truth is the official service manual for your exact vehicle. If you’re charging the system yourself, use a calibrated refrigerant scale to measure the charge and evacuate the system under vacuum before adding refrigerant. Use the correct refrigerant type (R-134a) and check for leaks first.
Common variables that can alter the precise amount include:
- Vehicle year and any A/C system revisions
- Condenser/evaporator or accumulator/drier replacements or upgrades
- Leaks or prior repairs that change the net required charge
- Ambient temperature and pressure conditions during service
- Retrofits or aftermarket components
In practice, technicians typically begin with a nominal charge near 2 pounds, then monitor system pressures and cooling performance, topping up or evacuating as dictated by the readings and the service manual.
Safety and best practices
Never vent refrigerant to the atmosphere. Work with a licensed technician who has proper recovery equipment, and ensure the system is evacuated and charged with the correct refrigerant type to avoid damage to the compressor and to meet environmental regulations.
Summary
The 6.7 Cummins A/C system generally uses about 2 pounds (≈0.9 kg) of R-134a refrigerant, though the exact amount can vary by year, components, and service history. Always confirm with the official manual and have the system serviced with the proper equipment and procedures.
How much Freon does a 6.7 Cummins hold?
Capacities and Specifications - 6.7L Diesel
| Item | Capacity |
|---|---|
| Power Steering (hydraulic brake equipped) | 6.1 qt (5.8 L)5 |
| Windshield washer fluid | Fill as required |
| A/C refrigerant | 26.5 oz (0.75 kg) |
| A/C refrigerant compressor oil | 5.1 fl oz (150 ml)6 |
How much R-134a does a 2011 Dodge Ram 2500 hold?
AC Refrigerant Capacities for Your 2011 Ram 2500
Certified A/C Pro R-134a PAG 46 Refrigerant Oil with ICE 32. This product contains approximately 8 fluid ounces of PAG refrigerant oil with ICE32.
How much refrigerant does a 2019 Ram 3500 hold?
14 oz. Refrigerant, stop leak with charging hose.
How much refrigerant does a 2016 Ram 2500 hold?
The 2016 Ram 2500 with the 6.7L diesel engine has an A/C refrigerant capacity of 26.5 oz (0.75 kg). For other models, the capacity is approximately 30 ounces or 1.873 lbs. Always check your vehicle's owner's manual or the A/C system label for the specific capacity.
- 6.7L Diesel: 26.5 oz (0.75 kg)
- Other models: Approximately 30 oz (1.873 lbs)
- Type: R-134a
