The Chelsea 890 Series Power Take-Off, part number 890LDFJW-B5DA or 890LDFJWB5DA, 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 flange to the rear of the transmission, giving the installer clearance that a conventional side-mount PTO cannot provide. The one-piece main shaft eliminates intermediate input splines, and the clutch sits at the rear of the PTO housing so the gear section tucks tightly against the transmission. The SAE C (XS) output uses wet-spline technology to extend pump shaft life under continuous-duty cycles. Continuous-duty torque is rated up to 670 lb-ft, with intermittent torque capability exceeding 501 lb-ft. Shaft power output reaches 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue apparatus, refuse trucks, and truck cranes. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift (hot-shift) engagement for on-the-go PTO operation
SAE C (XS) wet-spline output extends pump shaft life in demanding duty cycles
Continuous-duty torque rating up to 670 lb-ft; intermittent torque exceeds 501 lb-ft
Shaft power output: 64 HP at 500 RPM, 128 HP at 1,000 RPM
One-piece main shaft with rear-mounted clutch positions pump flange behind the transmission for improved clearance
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot-shift)
- Output Shaft Type: SAE C (XS) Wet-Spline Output
- Outlet Flange Type: SAE C
- 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 (500 RPM) / 128 HP (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.
