The Chelsea 890CCFJW-B3CS or 890CCFJWB3CS is a hydraulic hot-shift power take-off built specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and positions the pump output to the rear of the transmission, tucking between the transmission and frame rail to maximize pump clearance. The one-piece main shaft eliminates input splines between the PTO and output extension, and the clutch locates at the rear of the housing so the gear section sits tight against the transmission. The SAE C (XS) output uses wet-spline technology to extend pump shaft life in demanding service. Continuous-duty torque reaches 670 ft-lb, and intermittent torque is rated at 501 lb-ft and above. Shaft power is 64 HP at 500 RPM and 128 HP at 1,000 RPM. A genuine Chelsea part from Pro Gear and Transmission. Call us to confirm proper fit for your application.
The 890 Series is a single-unit PTO, not a PTO with a separate extension. It fits neatly between the transmission and the frame rail, with a rear bracket at the transmission providing additional support. Common service applications include fire and rescue trucks, aerial trucks, refuse trucks, truck cranes, and snow and ice equipment.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mount
Hydraulic PowerShift (hot-shift) engagement
SAE C (XS) output shaft with wet-spline technology for extended pump shaft life
Continuous-duty torque rating: 670 ft-lb; intermittent torque: 501+ ft-lb
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
One-piece main shaft with rear-positioned clutch for maximum pump clearance
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot-shift)
- Output Shaft Type: SAE C (XS) Wet Spline
- Outlet Flange Type: SAE C
- Continuous Torque: 670 ft-lb (check application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lb
- 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
The 890 Series is a single-unit PTO, not a PTO with a separate extension. It fits neatly between the transmission and the frame rail, with a rear bracket at the transmission providing additional support. Common service applications include fire and rescue trucks, aerial trucks, refuse trucks, truck cranes, and snow and ice equipment.
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
