10-18-2025, 05:46 PM
The Kubota SVL95-2s and Its Climate Control System
The Kubota SVL95-2s is a high-performance compact track loader introduced in the mid-2010s, designed for demanding excavation, grading, and material handling tasks. With a rated operating capacity of 3,200 lbs and a 96.4 hp turbocharged diesel engine, it quickly became a favorite among contractors for its power, comfort, and hydraulic versatility. Kubota, founded in 1890 in Osaka, Japan, has built a reputation for durable compact equipment, and the SVL series reflects its commitment to operator comfort and system reliability.
One key feature of the SVL95-2s is its fully enclosed cab with air conditioning. The A/C system uses standard R-134a refrigerant and includes a low pressure switch to protect the compressor from damage due to refrigerant loss or system leaks.
Terminology Notes
On the SVL95-2s, the low pressure switch is typically mounted on or near the suction line exiting the evaporator coil. This line runs from the cab’s HVAC unit toward the compressor, which is located near the engine compartment. The switch is often tucked behind the cab roof panel or near the firewall, depending on the production year and regional configuration.
Steps to locate:
One operator in Oklahoma reported that his SVL95-2s stopped blowing cold air after a routine service. He traced the issue to a disconnected wire at the low pressure switch, which had been bumped during filter replacement. After reconnecting the wire and resetting the system, the A/C resumed normal operation.
Another technician shared that aftermarket switches sometimes have slightly different pressure thresholds, causing premature compressor shutdown. He recommended sourcing OEM parts or verifying specs before installation.
Preventive Measures and Recommendations
The low pressure A/C switch on the Kubota SVL95-2s plays a critical role in protecting the compressor and maintaining cabin comfort. Locating it requires tracing the suction line from the evaporator, often behind trim or roof panels. When the switch fails or disconnects, the A/C system may appear dead despite full refrigerant levels. With careful inspection, proper diagnostics, and OEM replacement, operators can restore cooling performance and avoid costly compressor damage. In hot climates and long shifts, that switch is more than a sensor—it’s a lifeline.
The Kubota SVL95-2s is a high-performance compact track loader introduced in the mid-2010s, designed for demanding excavation, grading, and material handling tasks. With a rated operating capacity of 3,200 lbs and a 96.4 hp turbocharged diesel engine, it quickly became a favorite among contractors for its power, comfort, and hydraulic versatility. Kubota, founded in 1890 in Osaka, Japan, has built a reputation for durable compact equipment, and the SVL series reflects its commitment to operator comfort and system reliability.
One key feature of the SVL95-2s is its fully enclosed cab with air conditioning. The A/C system uses standard R-134a refrigerant and includes a low pressure switch to protect the compressor from damage due to refrigerant loss or system leaks.
Terminology Notes
- Low Pressure Switch: A sensor that monitors refrigerant pressure in the suction line and disables the compressor if pressure drops below safe levels.
- Suction Line: The refrigerant line that carries low-pressure vapor from the evaporator to the compressor.
- Cab Roof Panel: The upper section of the cab housing electrical and HVAC components.
- Compressor Clutch Relay: An electrical relay that engages the compressor when A/C is activated and pressure is within range.
On the SVL95-2s, the low pressure switch is typically mounted on or near the suction line exiting the evaporator coil. This line runs from the cab’s HVAC unit toward the compressor, which is located near the engine compartment. The switch is often tucked behind the cab roof panel or near the firewall, depending on the production year and regional configuration.
Steps to locate:
- Open the rear engine compartment and trace the A/C lines toward the cab.
- Remove the interior roof panel or side trim near the evaporator box.
- Look for a small cylindrical sensor with two wires connected to a refrigerant line.
- Confirm the part number and connector type before replacement.
- A/C system fails to engage even with full refrigerant charge.
- Compressor clutch does not activate.
- No voltage at the compressor relay when A/C is turned on.
- Diagnostic codes related to HVAC pressure faults.
One operator in Oklahoma reported that his SVL95-2s stopped blowing cold air after a routine service. He traced the issue to a disconnected wire at the low pressure switch, which had been bumped during filter replacement. After reconnecting the wire and resetting the system, the A/C resumed normal operation.
Another technician shared that aftermarket switches sometimes have slightly different pressure thresholds, causing premature compressor shutdown. He recommended sourcing OEM parts or verifying specs before installation.
Preventive Measures and Recommendations
- Inspect A/C lines during routine service to ensure connectors are secure.
- Use a manifold gauge set to verify refrigerant pressure before replacing components.
- Avoid overcharging the system, which can trigger high pressure faults and mask low pressure switch issues.
- Label and document wire routing during cab disassembly to prevent misconnection.
- Replace the switch with matching OEM specs to ensure proper compressor protection.
The low pressure A/C switch on the Kubota SVL95-2s plays a critical role in protecting the compressor and maintaining cabin comfort. Locating it requires tracing the suction line from the evaporator, often behind trim or roof panels. When the switch fails or disconnects, the A/C system may appear dead despite full refrigerant levels. With careful inspection, proper diagnostics, and OEM replacement, operators can restore cooling performance and avoid costly compressor damage. In hot climates and long shifts, that switch is more than a sensor—it’s a lifeline.
