Maintaining proper refrigerant levels in Bobcat equipment ensures the HVAC system runs efficiently, especially during hot conditions. Whether you own a skid-steer loader, compact track loader, excavator, or utility vehicle, this guide helps you find the exact refrigerant type and capacity for your machine. Let’s jump in.
Bobcat Refrigerant Capacity Chart
Compact Track Loaders
| Model | Refrigerant Type | Capacity (oz) |
|---|---|---|
| T450 | R-134a | 24 oz |
| T550 | R-134a | 26 oz |
| T590 | R-134a | 26 oz |
| T595 | R-134a | 26 oz |
| T630 | R-134a | 28 oz |
| T650 | R-134a | 30 oz |
| T740 | R-134a | 32 oz |
| T750 | R-134a | 32 oz |
| T770 | R-134a | 32 oz |
| T870 | R-134a | 34 oz |
Skid-Steer Loaders
| Model | Refrigerant Type | Capacity (oz) |
|---|---|---|
| S450 | R-134a | 24 oz |
| S510 | R-134a | 26 oz |
| S530 | R-134a | 26 oz |
| S550 | R-134a | 26 oz |
| S570 | R-134a | 26 oz |
| S590 | R-134a | 28 oz |
| S595 | R-134a | 28 oz |
| S650 | R-134a | 30 oz |
| S740 | R-134a | 32 oz |
| S770 | R-134a | 32 oz |
| S850 | R-134a | 34 oz |
Excavators
| Model | Refrigerant Type | Capacity (oz) |
|---|---|---|
| E26 | R-134a | 16 oz |
| E32 | R-134a | 18 oz |
| E35 | R-134a | 18 oz |
| E42 | R-134a | 20 oz |
| E45 | R-134a | 22 oz |
| E50 | R-134a | 22 oz |
| E55 | R-134a | 22 oz |
| E60 | R-134a | 22 oz |
| E85 | R-134a | 24 oz |
| E88 | R-134a | 24 oz |
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Utility Vehicles (UTVs)
| Model | Refrigerant Type | Capacity (oz) |
|---|---|---|
| 3400 | R-134a | 18 oz |
| 3400XL | R-134a | 18 oz |
| 3600 | R-134a | 20 oz |
| 3650 | R-134a | 20 oz |
| UV34 | R-134a | 20 oz |
| UV34XL | R-134a | 20 oz |
Telehandlers
| Model | Refrigerant Type | Capacity (oz) |
|---|---|---|
| V519 | R-134a | 28 oz |
| V723 | R-134a | 30 oz |
| V923 | R-134a | 32 oz |
| TL619 | R-134a | 28 oz |
| TL723 | R-134a | 30 oz |
| TL923 | R-134a | 32 oz |
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Toolcat Utility Work Machines
| Model | Refrigerant Type | Capacity (oz) |
|---|---|---|
| 5600 | R-134a | 24 oz |
| 5610 | R-134a | 24 oz |
| UW53 | R-134a | 26 oz |
| UW56 | R-134a | 26 oz |
Mini Track Loaders
| Model | Refrigerant Type | Capacity (oz) |
|---|---|---|
| MT55 | R-134a | 16 oz |
| MT85 | R-134a | 18 oz |
| MT100 | R-134a | 18 oz |
Types of Refrigerants Used in Bobcat Equipment
| Refrigerant | Type | Common Use |
|---|---|---|
| R-134a | HFC | Widely used in Bobcat loaders and excavators |
| R-1234yf | HFO | Eco-friendly, used in newer models |
| R-12 | CFC | Discontinued due to environmental regulations |
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Importance of Correct Refrigerant Capacity
Using the correct refrigerant and filling it to the right capacity:
- Improves air conditioning performance
- Prevents compressor damage
- Increases machine lifespan
- Saves on energy and fuel
How to Check Your Bobcat’s AC System
Before recharging:
- Turn off the engine and let it cool.
- Locate the AC service ports, usually behind access panels.
- Use a refrigerant gauge manifold to check pressure levels.
- Wear gloves and safety goggles at all times.
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Signs Your Bobcat Needs a Refrigerant Recharge
Watch for these red flags:
- AC blows warm air
- Strange noises from the compressor
- Visible leaks near AC lines
- Low-pressure readings on gauges
- Frequent compressor cycling
FAQ
How much Freon does a Bobcat take?
The amount of Freon (R-134a) a Bobcat machine takes depends on the specific model and series. Generally:
- Smaller models (like Bobcat S450 or T450) use around 24–26 oz
- Larger models (like S770 or T870) use between 32–34 oz
Refer to the Bobcat Refrigerant Capacity Chart above for model-specific capacities.
What is the refrigerant capacity?
Refrigerant capacity is the maximum amount of refrigerant (typically measured in ounces or grams) a vehicle or machine’s AC system can safely hold. Overcharging or undercharging affects performance and can damage components. For Bobcat machines, refrigerant capacity usually ranges from 16 oz (for compact models) to 34 oz (for large loaders or telehandlers).
How much Freon does a Bobcat T300 take?
The Bobcat T300 compact track loader typically takes 30 oz of R-134a refrigerant.
This value ensures optimal AC performance and prevents compressor stress. Always double-check with the owner’s manual or label near the AC port for confirmation.
What is the load capacity of the Bobcat S650?
The Bobcat S650 skid-steer loader has a rated operating capacity of 2,690 lbs (1,220 kg).
Its tipping load is around 5,380 lbs (2,440 kg). This makes it suitable for medium to heavy-duty lifting tasks in construction and agriculture.
What coolant does Bobcat use?
Bobcat typically uses an ethylene glycol-based coolant with anti-corrosion additives. The recommended product is:
- Bobcat Heavy-Duty PG Coolant (pre-mixed or concentrate)
- Compatible alternatives: Any low-silicate, phosphate-free, nitrite-free extended life coolant
Always match your coolant to your engine type and ambient operating temperature.
How do you know how much Freon to add?
To determine how much Freon to add:
- Check the machine’s label, found near the AC port or in the manual.
- Use a manifold gauge set to read low- and high-pressure lines.
- Add refrigerant slowly to the low-pressure port until the ideal PSI is reached (typically 30-35 psi on the low side when the AC is on)
- Never exceed the manufacturer’s specified capacity
How much R-134a refrigerant is required?
Most Bobcat machines require between 18 oz to 34 oz of R-134a. Here’s a quick breakdown:
- Small machines (MT85, E26): ~16–18 oz
- Mid-size (S510, T595): ~26 oz
- Large loaders (S770, T870): ~32–34 oz
Refer to the full chart for your exact model.
How do you calculate refrigerant quantity?
Refrigerant quantity is calculated based on:
- System size (in liters or cubic inches of displacement)
- Compressor size and type
- OEM specifications from manufacturer data plates or manuals
- Evaporator and condenser capacity
For field checks, use weigh scales or manifold gauges along with temperature and pressure readings.
What is the volume limit for refrigerant?
There’s no universal “volume limit” for refrigerant, it’s specific to each system’s design. However, you must never exceed the manufacturer’s specified weight/capacity (e.g., 30 oz for a Bobcat T650). Exceeding this can:
- Cause high head pressure
- Lead to compressor damage
- Reduce cooling performance
- Void warranty or violate EPA regulations
For safety, always follow OEM-recommended values and use EPA-approved refrigerant handling equipment.
