The Chelsea 890 Series Power Take-Off, part number 890HCFJW-B5DA or 890HCFJWB5DA, is a hydraulic hot shift PTO engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. The 890 Series mounts via a 10-bolt pattern and positions the pump output to the rear of the transmission, clearing the frame rail where side-mounted clearance is tight. Unlike a PTO-plus-extension setup, the 890 uses a single one-piece main shaft, eliminating the intermediate input splines between the PTO body and the output. The SAE C output shaft uses Wet Spline technology to reduce wear in continuous, high-demand operation. Continuous-duty torque rating for the series reaches 670 ft-lb, with intermittent torque rated at 501+ ft-lb. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue apparatus, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific chassis and transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic hot shift (PowerShift) engagement for on-the-go PTO engagement
SAE C output shaft with Wet Spline technology to extend PTO and pump shaft life
Single one-piece main shaft design eliminates intermediate input splines for a more compact, rear-positioned output
Series continuous-duty torque rating up to 670 ft-lb; intermittent torque 501+ ft-lb
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 (Hydraulic Hot Shift)
- Output Shaft Type: SAE C (XS) with Wet Spline
- Outlet Flange Type: SAE C
- Continuous Torque: 670 ft-lb (908 Nm) - check application pages for actual torque ratings
- Intermittent Torque: 501+ ft-lb (501+ Nm)
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 64 HP (48 kW) at 500 RPM; 128 HP (95 kW) at 1,000 RPM
- Lubricant: Wet Spline
Additional Information
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
