The Chelsea 890 Series Power Take-Off, part number 890CBFJW-B3CF or 890CBFJWB3CF, 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, providing improved pump clearance without the need for a separate extension. Its one-piece main shaft eliminates input splines between the PTO and output extension, and the clutch is located at the rear of the housing so the gear section tucks tightly against the transmission. The SAE C output uses wet-spline technology to extend pump shaft life under continuous-duty cycles. Continuous-duty torque reaches 670 lb-ft; intermittent torque is rated at 501+ lb-ft. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue, refuse, and truck crane equipment. Call us to confirm proper fit for your specific transmission configuration.
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 shaft with wet-spline technology to extend PTO and pump shaft life
Continuous-duty torque rating up to 670 lb-ft; intermittent torque rated 501+ lb-ft
One-piece main shaft design eliminates input splines between PTO body and output extension
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- PRODUCT SERIES: 890
- TRANSMISSION APPLICATION: Allison 3000 MD and 4000 HD Series
- MOUNTING TYPE: 10-Bolt
- SHIFT TYPE: Hydraulic PowerShift (Hydraulic Hot Shift)
- OUTPUT SHAFT TYPE: SAE C ("XS") Output
- OUTLET FLANGE TYPE: SAE C
- LUBRICATION: Wet Spline
- CONTINUOUS TORQUE: 670 lb-ft (check application pages for actual torque ratings)
- INTERMITTENT TORQUE: 501+ lb-ft
- SHAFT POWER: 64 HP at 500 RPM / 128 HP at 1,000 RPM
- OUTPUT POWER: 56+ HP
Additional Information
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
