The Chelsea 890LDFJW-D5XS or 890LDFJWD5XS is a hydraulic hot-shift power take-off from the Chelsea 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and delivers an SAE C ("XS") output shaft with Wet Spline technology to reduce wear on the PTO and pump shaft under demanding duty cycles. Continuous torque reaches 670 ft-lbs, with intermittent torque rated at 501+ ft-lbs. Shaft power is rated at 64 HP at 500 RPM and 128 HP at 1,000 RPM. The one-piece main shaft eliminates input splines between the PTO and output extension, while the rear-mounted clutch tucks the housing tightly against the transmission for improved frame-rail clearance. Common applications include aerial trucks, fire and rescue, refuse trucks, and truck cranes. Call us to confirm proper fit for your application.
The Chelsea 890 Series is a single-unit design, not a PTO with a separate extension. The one-piece main shaft eliminates the input splines between the PTO and the output extension, reducing potential failure points. The rear-mounted clutch allows the housing and gear section to tuck tightly against the transmission, fitting between the transmission and frame rail. The 890 Series accommodates transmissions equipped with or without a cooler, retarder, or both. Typical applications include aerial lift trucks, fire and rescue pumpers, refuse trucks, and truck cranes where pump space and torque capacity are both critical.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift (hot shift) engagement
SAE C ("XS") output shaft with Wet Spline technology for extended pump shaft life
Continuous torque rating up to 670 ft-lbs; intermittent torque 501+ ft-lbs
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Extended rear-mount design moves pump flange to rear of 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 ft-lbs (verify actual rating on application pages)
- Intermittent Torque: 501+ ft-lbs
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 64 HP (48 kW) at 500 RPM; 128 HP (95 kW) at 1,000 RPM
- Lubricant: Wet Spline
- Dimensions (H x W x L): 13 in. x 11.75 in. x 31.38 in.
Additional Information
The Chelsea 890 Series is a single-unit design, not a PTO with a separate extension. The one-piece main shaft eliminates the input splines between the PTO and the output extension, reducing potential failure points. The rear-mounted clutch allows the housing and gear section to tuck tightly against the transmission, fitting between the transmission and frame rail. The 890 Series accommodates transmissions equipped with or without a cooler, retarder, or both. Typical applications include aerial lift trucks, fire and rescue pumpers, refuse trucks, and truck cranes where pump space and torque capacity are both critical.
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
