The Chelsea 897HDFJW-M5XY or 897HDFJWM5XY is a constant-mesh power take-off from the Chelsea 897 Series, designed to mount on Allison 3000 and 4000 Series transmissions. The 10-bolt mounting configuration positions the pump output flange at the rear of the transmission, giving better clearance between the PTO housing and the frame rail. The output shaft and flange are SAE C type, and the wet spline output extends pump shaft life under sustained operating conditions. As a single-unit design with a one-piece main shaft, the 897 Series eliminates the input splines associated with a PTO-plus-extension arrangement. Typical applications include aerial trucks, fire and rescue apparatus, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific transmission configuration.
Features
Chelsea 897 Series constant-mesh power take-off
Designed for Allison 3000 and 4000 Series transmissions
10-bolt mounting positions housing between transmission and frame rail
SAE C output shaft and pump mounting flange
Wet spline output technology for extended PTO and pump shaft life
Single-unit, one-piece main shaft design, no PTO-plus-extension required
Tech Specs
- Product Series: 897
- Shift Type: Constant Mesh (Constant Engagement)
- Mounting Type: 10-Bolt
- Input Gear Designator: FJ - Allison World Transmissions
- Output Shaft Type: SAE C
- Outlet Flange Type: SAE C
- Lubricant Provision: W - Wet Spline
- Output Power (Series): 56+ HP / 51+ kW
- Intermittent Torque (Series): 501+ lb-ft / 501+ Nm
- Dimensions (H x W x L): 13 in. x 11 in. x 31 in.
Additional Information
Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
