The Chelsea 890 Series Power Take-Off, part number 890RCFJW-B5XS or 890RCFJWB5XS, is a hydraulic hot-shift PTO engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and delivers an SAE C ("XS") output with shaft power of 64 HP at 500 RPM and 128 HP at 1,000 RPM. Continuous-duty torque rating reaches 670 ft-lb, with intermittent torque exceeding 501 lb-ft. The 890 Series positions the pump mounting flange at the rear of the transmission to improve clearance between the PTO and the frame rail. The one-piece main shaft eliminates input splines at the PTO-to-extension interface, and the wet-spline output extends pump shaft life in demanding applications including aerial, fire and rescue, refuse, and crane trucks. Hydraulic PowerShift engagement allows clutch-in under load. A genuine Chelsea part sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift engagement - clutch-in under load without stopping
SAE C ("XS") output shaft; 64 HP at 500 RPM, 128 HP at 1,000 RPM
Continuous-duty torque rating up to 670 ft-lb; intermittent torque 501+ lb-ft
Rear-mounted pump flange positions output behind the transmission for improved pump clearance
Wet-spline output lubrication extends PTO and pump shaft life in demanding duty cycles
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C ("XS") Output
- Lubricant: Wet Spline
- Continuous Torque: 670 lb-ft (check application pages for actual torque rating)
- Intermittent Torque: 501+ lb-ft
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 64 HP (48 kW) at 500 RPM; 128 HP (95 kW) at 1,000 RPM
Additional Information
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
