The Chelsea 890EBFJW-B5XK or 890EBFJWB5XK is a hydraulic hot-shift power take-off from Chelsea's 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts with a 10-bolt pattern and delivers an SAE C output shaft with Wet Spline Technology, which extends both PTO and pump shaft life under demanding duty cycles. The 890 Series design positions the pump mounting flange at the rear of the transmission, improving pump clearance without the added complexity of a separate PTO-plus-extension assembly. The one-piece main shaft eliminates the input splines between the PTO body and the output extension. Continuous-duty torque rating reaches 670 ft-lb, with intermittent torque rated at 501+ ft-lb. Shift is hydraulic PowerShift. Common applications include aerial trucks, fire and rescue, refuse, and truck crane service. Call us to confirm proper fit for your transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift engagement for hot-shift operation under load
SAE C output shaft with Wet Spline Technology to extend pump shaft life
Continuous-duty torque rating up to 670 ft-lb; intermittent torque rated 501+ ft-lb
Extended one-piece shaft moves pump flange rearward for improved clearance
Shaft power: 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 Rating: 670 lb-ft (see application pages for actual torque ratings)
- Intermittent Torque Rating: 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
- 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.
