The Chelsea 892CAFJW-B3CF or 892CAFJWB3CF is a hydraulic PowerShift power take-off from the 892 Series, built for Allison 3000 MD and 4000 HD Series transmissions via a 10-bolt mount. The FJ input gear designator covers both the 3000 MD and 4000 HD families, and the W wet-spline output extends PTO and pump shaft life in demanding duty cycles. Continuous torque is rated up to 670 ft-lb; output power runs 64 HP at 500 RPM and 128 HP at 1,000 RPM. The SAE C outlet flange and extended one-piece main shaft push the pump mounting flange to the rear of the transmission, gaining clearance between the pump and the frame rail. Typical applications include aerial trucks, fire and rescue, refuse, and truck crane service. Call us to confirm proper fit for your chassis and transmission configuration.
The 892 Series mounts like a standard side-mount PTO but adds a support bracket at the rear of the transmission. The clutch is located at the rear of the unit, allowing the housing and gear section to tuck tightly against the transmission for improved clearance. The 892 is a single, integrated unit with a one-piece main shaft rather than a PTO-plus-extension assembly. It can be ordered for transmissions equipped with or without a cooler, retarder, or both. Common service applications include aerial trucks, fire and rescue pumpers, refuse vehicles, and truck cranes.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mount
Hydraulic PowerShift (hot shift) operation
SAE C outlet flange with SAE C (XS) extended output shaft for improved pump clearance
Wet-spline output technology to extend PTO and pump shaft life
Continuous torque rated up to 670 ft-lb; 128 HP at 1,000 RPM
Single one-piece main shaft eliminates input splines between PTO and output extension
Tech Specs
- Transmission Fitment: Allison 3000 MD and 4000 HD Series (Input Gear Designator: FJ)
- Product Series: 892
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot shift)
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C (XS) Extended Wet-Spline Output
- Lubricant Type: Wet Spline (W)
- Intermittent Torque: 501+ lb-ft (501+ Nm)
- Continuous Torque: Up to 670 lb-ft (see application pages for actual ratings)
- 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)
- Assembly Code: 5
Additional Information
The 892 Series mounts like a standard side-mount PTO but adds a support bracket at the rear of the transmission. The clutch is located at the rear of the unit, allowing the housing and gear section to tuck tightly against the transmission for improved clearance. The 892 is a single, integrated unit with a one-piece main shaft rather than a PTO-plus-extension assembly. It can be ordered for transmissions equipped with or without a cooler, retarder, or both. Common service applications include aerial trucks, fire and rescue pumpers, refuse vehicles, and truck cranes.
Parts manual and diagrams: Chelsea 892 Series PTO parts list with prices
