The Chelsea 892HBFJW-B5ZS or 892HBFJWB5ZS is a hydraulic hot-shift power take-off from the Chelsea 892 Series, engineered specifically for Allison 4700 Series transmissions. This 10-bolt, side-mount PTO positions the SAE C pump output flange at the rear of the transmission, creating additional clearance between the pump and the frame rail. The one-piece main shaft eliminates intermediate input splines, and the clutch sits at the rear of the housing so the gear section tucks tightly against the transmission. Wet Spline output technology protects both the PTO and pump shaft splines under demanding, continuous-duty cycles. Typical applications include aerial lift trucks, fire and rescue vehicles, snow and ice equipment, and refuse trucks. Call us to confirm proper fit for your application.
Features
Chelsea 892 Series PTO, part number 892HBFJW-B5ZS or 892HBFJWB5ZS
Designed for Allison 4700 Series transmissions
10-bolt mounting with hydraulic hot-shift engagement
SAE C output flange and SAE C output shaft type
Wet Spline output extends PTO and pump shaft life in demanding conditions
One-piece main shaft eliminates input splines between PTO and output extension
Clutch positioned at rear of housing for improved pump-to-frame clearance
Tech Specs
- Mounting: 10-Bolt
- Shift Type: Hydraulic Hot Shift
- Output Flange Type: SAE C
- Output Shaft Type: SAE C
- Lubricant/Spline: Wet Spline
- Transmission Application: Allison 4700 Series
- Input Gear Designator: FJ (Allison 3000 MD and 4000 HD Series)
- Series Intermittent Torque: 501+ lb-ft
- Series Output Power: 56+ HP
Additional Information
The Chelsea 892 Series is a single-unit design, not a PTO with a separate extension. The housing and gear section mount like a standard side-mount PTO but include an additional bracket at the rear of the transmission for structural support. The unit can be ordered for transmissions equipped with or without a cooler, retarder, or both. Common markets include aerial, defense, on-highway, and other mobile equipment applications such as fire and rescue trucks, pumper cleaners, truck cranes, and refuse trucks.Parts Manual: Chelsea 892 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
