The Chelsea 892HCFJW-H5ZS or 892HCFJWH5ZS is a hydraulic hot-shift power take-off from the Chelsea 892 Series, engineered specifically for Allison 4700 Series transmissions. The 892 Series mounts via a 10-bolt pattern and relocates the pump mounting flange to the rear of the transmission, gaining clearance in tight frame-rail installations. The output uses an SAE C flange with wet spline technology to extend PTO and pump shaft service life under demanding duty cycles. The one-piece main shaft eliminates input splines between the PTO body and the output extension. An auxiliary bracket at the rear of the transmission provides added support. Common applications for the 892 Series include aerial trucks, fire and rescue vehicles, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific transmission configuration.
Features
Designed for Allison 4700 Series transmissions with 10-bolt mounting
Hydraulic hot-shift operation for on-the-go engagement
SAE C output flange and SAE C output shaft type
Wet spline output extends PTO and pump shaft service life
One-piece main shaft eliminates input splines for a more direct drivetrain path
Rear-located pump flange improves clearance between transmission and frame rail
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic Hot Shift
- Output Shaft Type: SAE C
- Outlet Flange Type: SAE C
- Lubricant/Output: Wet Spline
- Input Gear Designator: FJ - Allison 3000 MD and 4000 HD Series
- Product Series: 892
- Dimensions (H x W x L): 13 in. x 11 in. x 38 in.
Additional Information
The Chelsea 892 Series is a single-unit PTO, not a PTO with a separate extension. The clutch is positioned at the rear of the PTO housing, allowing the gear section to mount close to the transmission for tighter clearance. The series is designed to accommodate Allison 4700 transmissions configured with or without a cooler, retarder, or both. Typical markets include aerial, on-highway, defense, and other mobile applications. Common vehicle types include aerial lift trucks, fire and rescue apparatus, pumper cleaners, refuse trucks, and truck cranes.Parts Manual: Chelsea 892 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
