The Chelsea 890LDFJW-K5XY or 890LDFJWK5XY is a hydraulic PowerShift PTO from the 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern with an SAE C outlet flange and SAE "C" (XS) output shaft. Hydraulic engagement lets operators hot-shift under load without clutching. The one-piece main shaft eliminates the spline joint found between a PTO body and a bolt-on extension, and the clutch is positioned at the rear of the unit so the housing tucks tightly against the transmission for improved frame-rail clearance. Wet-spline output lubrication extends PTO and pump shaft life in demanding duty cycles. Shaft power output reaches 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue, refuse, and crane trucks. Call us to confirm proper fit for your specific vehicle and transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mount
Hydraulic PowerShift engagement for hot-shift operation under load
SAE C outlet flange with SAE "C" (XS) output shaft
Continuous-duty torque rating up to 670 ft-lb; intermittent torque 501+ ft-lb
Wet-spline output extends PTO and pump shaft life in high-demand applications
One-piece main shaft and rear-mounted clutch relocate pump output rearward for improved clearance between transmission and frame rail
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 - SAE "C" (XS) Output
- Lubricant / Spline Type: Wet Spline
- Continuous Torque Rating: 670 ft-lb (check application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lb
- Output Power: 56+ HP (51+ kW)
- Shaft Power at 500 RPM: 64 HP (48 kW)
- Shaft Power at 1,000 RPM: 128 HP (95 kW)
Additional Information
The Chelsea 890 Series is designed as a single integrated unit, not a PTO with a separate bolt-on extension. By positioning the clutch at the rear of the PTO body, the gear section sits flush against the transmission, allowing the pump output flange to clear the frame rail in tight installations. This rear-of-transmission pump location makes the 890 Series a preferred choice for aerial trucks, fire and rescue pumpers, snow and ice equipment, and refuse trucks where pump space is limited and high continuous torque is required. The 890 Series can be ordered for transmissions equipped with or without a cooler, retarder, or both - confirm the correct configuration for your transmission before ordering. Part number 890LDFJW-K5XY is also referenced as SP890LDFJW-K5XY.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
