Mustang- Switch/Binary/AC: #138714 The part number #138714 refers to a Switch/Binary/AC (Air Conditioning Binary Pressure Switch) primarily used in heavy machinery manufactured by the Manitou Group, including Mustang and Gehl skid steer loaders Product Overview Part Type: A/C Binary Pressure Safety Switch. Manufacturer: Manitou / Gehl (OEM). Status: This specific part number (#138714) is considered obsolete by some dealers and has been officially superseded by Part #N138714. Function: It acts as a safety mechanism that protects the A/C compressor. It prevents the compressor from engaging if the refrigerant pressure is either too low (to prevent running dry) or too high (to prevent system damage). Compatibility & Applications This binary switch is used across a wide range of compact construction equipment: Mustang & Gehl: Fits approximately 59 different models of skid steer loaders and telehandlers. Case: Cross-referenced to fit several Case skid steer models, including the 410, 420, 430, 440, and 450 series. Agricultural Equipment: Also used in certain Massey Ferguson, JCB, and John Deere loader applications.