The Chelsea 897 Series Power Take-Off, part number 897HAFJW-M5CZ or 897HAFJWM5CZ, is a constant-engagement PTO engineered specifically for Allison 3000 and 4000 Series transmissions. The 897 Series uses a 10-bolt mounting configuration and positions the SAE C output flange at the rear of the transmission, moving the pump mounting point rearward for improved clearance between the pump and frame rail. A one-piece main shaft eliminates input splines between the PTO body and the output extension. The wet spline output extends pump shaft service life under continuous-duty conditions. Common applications include aerial trucks, fire and rescue, snow and ice equipment, truck cranes, and refuse trucks. Call us to confirm proper fit for your specific transmission configuration.
Features
Constant-engagement (constant mesh) design for Allison 3000 and 4000 Series transmissions
10-bolt mounting with rear-of-transmission pump flange placement for improved pump clearance
SAE C output flange and SAE C output shaft type
Wet spline output technology to extend PTO and pump shaft life under demanding duty cycles
One-piece main shaft eliminates input splines between PTO body and output extension
Suited for aerial trucks, fire and rescue, refuse trucks, truck cranes, and snow and ice applications
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Constant Engagement
- Input Gear Compatibility: Allison World Transmissions (3000 and 4000 Series)
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C
- Lubricant/Output Feature: Wet Spline
- Dimensions (H x W x L): 13 in. x 11 in. x 31 in.
- NMFC Code: 128520 - Hydraulic PTOs, Pumps, Motors, etc.
Additional Information
Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
