The Chelsea 897LDFJW-M5XV is a constant-mesh Power Take-Off from the 897 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. The design relocates the PTO pump mounting flange to the rear of the transmission, tucking the gear section tightly against the transmission housing to maximize pump clearance in tight frame-rail installations. A one-piece main shaft eliminates input splines between the PTO body and the output extension. The SAE C output uses Chelsea's Wet Spline technology to extend service life under continuous hydraulic pump duty. Mounting is 10-bolt. The 897 Series delivers intermittent torque ratings of 501 ft-lb and above, making it a fit for aerial, fire and rescue, refuse, and crane applications. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 and 4000 Series transmissions (10-bolt mounting)
Constant-mesh engagement (M designator in part number)
SAE C outlet flange and output shaft type
Wet Spline output (W designator) for extended PTO and pump shaft life
Pump flange positioned at rear of transmission for improved pump clearance
One-piece main shaft eliminates input splines between PTO body and output extension
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Constant Mesh (Constant Engagement)
- Transmission Fit: Allison 3000 and 4000 Series
- Output Shaft Type: SAE C
- Outlet Flange Type: SAE C
- Output Lubrication: Wet Spline
- Intermittent Torque Rating: 501+ lb-ft
- 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. This design allows the housing and gear section to sit tightly against the Allison transmission while extending the pump interface rearward for clearance between the pump and the truck frame rail. An additional rear-of-transmission bracket provides supplemental support. Common applications include aerial trucks, fire and rescue pumpers, truck cranes, refuse trucks, and snow and ice equipment. Also referenced as SP897LDFJW-M5XV.Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
