The Chelsea 252 Series Power Take-Off, part number 252GDHVX-B51462 or 252GDHVXB51462, is a hydraulic-shift PTO engineered for Allison and RAM automatic transmissions. It mounts via a 6-bolt flange and drives through a 1-inch round output shaft with a keyway. Intermittent torque capacity runs 120 lb-ft (163 Nm); check application pages for your exact rating. Shaft power delivery is 11 HP at 500 RPM and 23 HP at 1,000 RPM. The 252 Series integrates the cartridge valve directly into the housing, so installation requires only a single hydraulic hose connection rather than remote solenoid routing. A controlled-compression interface gasket and weather-tight electrical connectors come standard. Call us to confirm proper fit for your specific chassis and transmission configuration.
The Chelsea 252 Series is designed for aerial, vocational, and municipal equipment applications including tow and recovery trucks, tire service trucks, dump trucks, and aerial lifts. The compact housing is sized to pass through a floor access panel without requiring exhaust system removal, reducing installation time. Parker pumps compatible with this series are available with flows from 1.6 gpm to 8.2 gpm at 1,000 RPM, and the PTO and pump can be ordered together under a single part number.
Features
Hydraulic shift operation via integrated cartridge valve - single hose connection required
6-bolt mounting flange for Allison and RAM automatic transmissions
1-inch round output shaft with keyway
Intermittent torque rating: 120 lb-ft (163 Nm) - verify against application pages for your vehicle
Shaft power: 11 HP at 500 RPM, 23 HP at 1,000 RPM (up to 25 HP continuous with 30% de-rating)
Controlled Compression Interface Gasket and Weather Tight Electrical Connectors included
Tech Specs
- Shift Type: Hydraulic
- Mounting Type: 6-Bolt
- Output Shaft Type: 1" Round with 1/4" Key
- Intermittent Torque: 120 lb-ft (163 Nm) - Check Application Pages for Actual Torque Ratings
- Output Power: 25 HP and below, 20 kW and below
- Shaft Power: 11 HP at 500 RPM, 23 HP at 1,000 RPM / 9 kW at 500 RPM, 17 kW at 1,000 RPM
- Transmission Fitment: Allison, RAM
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 252 Series is designed for aerial, vocational, and municipal equipment applications including tow and recovery trucks, tire service trucks, dump trucks, and aerial lifts. The compact housing is sized to pass through a floor access panel without requiring exhaust system removal, reducing installation time. Parker pumps compatible with this series are available with flows from 1.6 gpm to 8.2 gpm at 1,000 RPM, and the PTO and pump can be ordered together under a single part number.
