The Chelsea 877LAFJW-M3TZ or 877LAFJWM3TZ is a 877 Series Power Take-Off designed for Allison transmissions using a 10-bolt mounting configuration. This unit operates on a constant mesh design, making it suited for continuous-duty applications that do not require disengagement, such as load-sense pump installations. The 877 Series is built around a compact housing to reduce clearance issues and incorporates Wet Spline Technology to extend service life at the PTO and pump shaft interface. Output options within the series include SAE B, SAE C, and ISO 7652 pump flanges, as well as driveline output. Continuous torque ratings for the series reach up to 670 lb-ft. Call us to confirm proper fit for your application.
Features
10-bolt mounting for Allison transmissions
Constant mesh operation supports continuous-duty and load-sense pump applications
Compact housing design reduces installation clearance issues
Wet Spline Technology extends PTO and pump shaft service life
Rotatable output flange options to maximize installation clearance
Series torque capacity up to 670 lb-ft continuous
Tech Specs
- Mounting Type: 10-Bolt
- Transmission Manufacturer: Allison
- Shift Type: Constant Mesh
- Output Type: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Continuous Operation: Yes
- Series Continuous Torque: up to 670 lb-ft (Check application pages for actual torque rating)
- Series Intermittent Torque: 501+ lb-ft
- Series Output Power: 56+ HP
- Lubricant System: Pressure Lube (P) with Wet Spline (W)
- Output Shaft Options (Series): 1410 Series Companion Flange, SAE C 1-1/4 in. 14T Pump Spline, SAE B 7/8 in. 13T Pump Spline, SAE BB 1 in. 15T Pump Spline, DIN 5462 Pump Spline, DIN 100 Flange, DIN 120 Flange
Additional Information
The Chelsea 877 Series is noted for use in demanding applications including refuse trucks, snow and ice equipment, aerial and fire and rescue trucks, oil and gas, and defense vehicles. Eight internal gear ratios are available within the series to match a wide range of speed requirements. Two assembly arrangements are offered to maximize installation clearance. Pressure lubrication is integrated into the PTO housing and requires a single hose connection for simplified installation. The 877 Series carries an obsolete designation from Parker Chelsea, meaning current production has ended. Pro Gear and Transmission can help you confirm availability or identify a compatible current-production alternative. Call us with your application details.Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
