The Chelsea 890 Series Power Take-Off, part number 890LGFJW-B5XV or 890LGFJWB5XV, is a hydraulic hot-shift PTO engineered for Allison 3000 MD and 4000 HD Series transmissions. It uses a 10-bolt mounting pattern and positions the pump output at the rear of the transmission, giving the clearance that tight frame-rail installations demand. The one-piece main shaft eliminates input splines between the PTO and the output extension, and the clutch sits at the rear of the housing so the gear section tucks tightly against the transmission. A wet-spline SAE C output extends shaft life under continuous-duty loads. Continuous torque rating 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 1000 RPM. Common applications include aerial trucks, fire and rescue, refuse, and truck crane work. Call us to confirm proper fit for your specific transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift (hot-shift) engagement
One-piece main shaft eliminates input splines between PTO body and output extension
Wet-spline SAE C (XS) output for extended PTO and pump shaft life
Continuous-duty torque rating up to 670 lb-ft; intermittent torque 501+ lb-ft
Shaft power: 64 HP at 500 RPM, 128 HP at 1000 RPM
Tech Specs
- Transmission Fitment: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot-shift)
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C (XS) Wet-Spline Output
- Continuous Torque: 670 lb-ft (check application pages for actual 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 1000 RPM
- Lubricant System: Wet Spline
Additional Information
The 890 Series mounts like a standard side-mount PTO but adds a rear-of-transmission bracket for additional support. It is a single-unit design, not a PTO paired with a bolt-on extension, and the housing fits between the transmission and frame rail without requiring custom spacing. The 890 Series can be configured for transmissions equipped with a cooler, a retarder, both, or neither. Typical applications include aerial work trucks, fire and rescue pumpers, refuse trucks, and truck cranes where pump clearance and sustained high-torque output are critical requirements.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
