The Chelsea 897XAFJW-M5XV or 897XAFJWM5XV is a constant-engagement power take-off from the Chelsea 897 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. The 10-bolt mounting configuration positions the SAE C output flange at the rear of the transmission, improving pump clearance between the housing and the frame rail. The wet spline output extends PTO and pump shaft service life under demanding duty cycles. Unlike PTO-plus-extension setups, the 897 Series uses a one-piece main shaft with no input splines between the PTO body and the output. The series carries an intermittent torque rating above 501 lb-ft and output power above 56 HP. Common applications include aerial trucks, fire and rescue, refuse trucks, and truck cranes. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 and 4000 Series transmissions
10-bolt mounting type
SAE C output flange and output shaft
Wet spline output for extended PTO and pump shaft life
Constant engagement (constant mesh) shift type
One-piece main shaft eliminates input splines between PTO body and output extension
Tech Specs
- Series: Chelsea 897
- Application: Allison 3000 and 4000 Series transmissions
- Mounting Type: 10-bolt
- Shift Type: Constant engagement (constant mesh)
- Output Shaft Type: SAE C
- Outlet Flange Type: SAE C
- Output: Wet spline
- Intermittent Torque Rating: 501+ lb-ft (501+ Nm)
- Output Power: 56+ HP (51+ kW)
- Dimensions (H x W x L): 13 in. x 11 in. x 31 in.
Additional Information
The Chelsea 897 Series is a single-unit PTO, not a PTO paired with a separate output extension. The pump interface mounts to the rear of the transmission, allowing the housing and gear section to tuck tightly against the transmission for improved clearance between the PTO and the frame rail. The wet spline design lubricates the output interface continuously, reducing wear during sustained high-demand operation common in aerial, fire and rescue, snow and ice, and refuse applications. Sold by Pro Gear and Transmission. Part number: 897XAFJW-M5XV or 897XAFJWM5XV.Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
