The Chelsea 890NDFJW-D3AC or 890NDFJWD3AC is a hydraulic PowerShift power take-off engineered for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and positions the pump output flange to the rear of the transmission, improving pump clearance without an extension shaft. The main shaft is a single one-piece design, which eliminates input splines between the PTO and output extension. Output is an SAE C ("XS") flange with wet spline technology to extend PTO and pump shaft service life. Shaft power output reaches 64 HP at 500 RPM and 128 HP at 1,000 RPM. The 890 Series is commonly applied to aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Available from Pro Gear and Transmission - call us to confirm proper fit for your application.
Features
Hydraulic PowerShift (hot shift) operation for Allison 3000 MD and 4000 HD Series transmissions
10-bolt mounting with rear-positioned pump output flange for improved pump clearance
SAE C ("XS") output with wet spline technology to extend PTO and pump shaft life
One-piece main shaft design eliminates input splines between PTO body and output extension
Continuous-duty torque rating up to 670 lb-ft; intermittent torque rated 501+ lb-ft
Shaft power output: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- TRANSMISSION APPLICATION: Allison 3000 MD and 4000 HD Series
- PRODUCT SERIES: 890
- MOUNTING TYPE: 10-Bolt
- SHIFT TYPE: Hydraulic PowerShift
- OUTPUT SHAFT TYPE: SAE C ("XS") Wet Spline
- OUTLET FLANGE TYPE: SAE C
- CONTINUOUS TORQUE: 670 lb-ft (check application pages for actual torque ratings)
- INTERMITTENT TORQUE: 501+ lb-ft
- OUTPUT POWER: 56+ HP / 51+ kW
- SHAFT POWER: 64 HP at 500 RPM; 128 HP at 1,000 RPM
- LUBRICANT: Wet Spline
Additional Information
The Chelsea 890 Series mounts like a standard side-mounted PTO but adds a bracket at the rear of the transmission for additional support. The clutch is positioned at the rear of the PTO housing, allowing the gear section to tuck tightly against the transmission for improved frame-rail clearance. The 890 Series is a single integrated unit - not a PTO paired with a separate extension - making installation more straightforward in tight installations. Common applications include aerial trucks, fire and rescue apparatus, pumper cleaners, refuse trucks, and truck cranes. The series supports transmissions configured with or without a cooler or retarder. Call Pro Gear and Transmission to confirm the right configuration for your specific chassis and transmission build.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
