The Chelsea 890 Series Power Take-Off, part number 890HBFJW-K5XK or 890HBFJWK5XK, is a hydraulic hot-shift PTO engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It uses a 10-bolt mount and positions the pump output at the rear of the transmission, giving the unit its defining advantage: improved pump clearance without the compromises of a PTO-plus-extension design. The main shaft is one piece, eliminating input splines between the PTO and the output extension. An SAE C output flange and Wet Spline output technology protect the PTO and pump shaft splines in demanding duty cycles. Continuous-duty torque rating reaches 670 ft-lb, with intermittent torque rated at 501 lb-ft or higher. Shift is Hydraulic PowerShift. Common applications include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Call us to confirm proper fit for your transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mount
One-piece main shaft eliminates input splines between PTO body and output extension
SAE C wet-spline output extends PTO and pump shaft life in demanding applications
Continuous-duty torque rating up to 670 ft-lb; intermittent torque rated 501+ lb-ft
Hydraulic PowerShift engagement for on-the-fly operation
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Fitment: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C (XS)
- Outlet Flange Type: SAE C
- Lubricant: Wet Spline
- Continuous Torque: 670 lb-ft (check application pages for actual torque ratings)
- 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
The 890 Series mounts like a standard side-mounted PTO but adds a support bracket at the rear of the transmission for rigidity. It fits between the transmission and the frame rail, locating the pump output rearward for adequate clearance. The unit can be ordered for transmissions equipped with or without a cooler, a retarder, or both. Typical applications include aerial trucks, fire and rescue trucks, refuse trucks, pumper cleaners, and truck cranes.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
