The Chelsea 252DDKUX-B5P42 or 252DDKUXB5P42 is a hydraulic-shift power take-off assembly from the Chelsea 252 Series, designed for Allison 1000/2000/2400 series automatic transmissions and RAM truck applications. It mounts via a 6-bolt pattern and delivers power through a 1-inch round output shaft with a 1/4-inch key. Shaft output is rated at 11 HP at 500 RPM and 23 HP at 1000 RPM, with intermittent torque in the 101-200 lb-ft range (check application pages for actual torque ratings specific to your installation). The integrated cartridge valve and single hose connection simplify installation, and weather-tight electrical connectors protect the hydraulic shift circuit. A controlled compression interface gasket seals the mounting face. Call us to confirm proper fit for your transmission and chassis.
The Chelsea 252 Series is engineered for aerial, vocational, municipal, and other mobile equipment. Typical applications include tow and recovery trucks, tire service trucks, dump trucks, and aerial equipment. The compact housing is designed to pass through a floor access panel without requiring exhaust system removal, reducing installation time. A range of compatible Parker pumps with flows from 1.6 gpm to 8.2 gpm at 1000 RPM are available, and the PTO and pump can be ordered together under a single part number. Continuous operation is supported with a 30% de-rating applied.
Features
Hydraulic shift operation with single hose connection and integrated cartridge valve
6-bolt mounting pattern for Allison 1000/2000/2400 series and RAM automatic transmissions
1-inch round output shaft with 1/4-inch key
Shaft power: 11 HP at 500 RPM, 23 HP at 1000 RPM
Intermittent torque rating: 101-200 lb-ft (verify actual rating on application pages)
Weather-tight electrical connectors and controlled compression interface gasket
Tech Specs
- Shift Type: Hydraulic
- Mounting Type: 6-Bolt
- Transmission Manufacturer: Allison, RAM
- Output Shaft Type: 1" Round with 1/4" Key
- Shaft Power: 11 HP (500 RPM), 23 HP (1000 RPM), 9 kW (500 RPM), 17 kW (1000 RPM)
- Output Power: 25 HP and below, 20 kW and below
- Intermittent Torque: 101-200 lb-ft, 101-200 Nm (120 lb-ft / 163 Nm - check application pages for actual torque ratings)
Additional Information
The Chelsea 252 Series is engineered for aerial, vocational, municipal, and other mobile equipment. Typical applications include tow and recovery trucks, tire service trucks, dump trucks, and aerial equipment. The compact housing is designed to pass through a floor access panel without requiring exhaust system removal, reducing installation time. A range of compatible Parker pumps with flows from 1.6 gpm to 8.2 gpm at 1000 RPM are available, and the PTO and pump can be ordered together under a single part number. Continuous operation is supported with a 30% de-rating applied.
