The Chelsea 877 Series Power Take-Off, part number 877XBFJP-M3RS or 877XBFJPM3RS, is a 10-bolt, constant mesh PTO designed for Allison transmissions. It delivers up to 670 lb-ft continuous torque and 128 HP at 1,000 RPM, making it suited for demanding, continuous-duty installations such as refuse trucks, aerial units, snow and ice equipment, and fire apparatus. The output shaft is a 1-1/2" 10-tooth spline with a 1410 companion flange. Intermittent torque rating exceeds 501 lb-ft. The compact housing is designed to reduce clearance conflicts during installation, and two assembly arrangements are offered to further maximize clearance. Pressure lubrication is integrated directly into the housing. Call us to confirm proper fit for your application.
The 877 Series is suited for high-torque, continuous-duty applications including refuse trucks, aerial equipment, snow and ice vehicles, fire and rescue apparatus, and oil and gas service trucks. Eight internal gear ratios provide speed versatility across installations. Pressure lubrication is integrated into the PTO housing and requires a single hose connection; the hose is included with the unit. Two assembly arrangements are available to maximize installation clearance. This series is listed as obsolete by Parker Chelsea; call Pro Gear and Transmission to confirm current availability and verify fitment for your specific transmission and chassis.
Features
10-bolt mounting for Allison transmission applications
Constant mesh shift type for continuous-duty use without disengagement
1-1/2" 10-tooth spline output shaft with 1410 companion flange
Continuous torque up to 670 lb-ft; intermittent torque rated 501+ lb-ft
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Compact housing with rotatable output flanges and Wet Spline Technology to extend PTO and pump shaft life
Tech Specs
- Mounting Type: 10-Bolt
- Transmission Manufacturer: Allison
- Shift Type: Constant Mesh
- Output Shaft Type: 1-1/2" 10-Tooth Spline with 1410 Companion Flange
- Intermittent Torque: 501+ lb-ft (501+ Nm)
- Continuous Torque: 670 lb-ft (908 Nm) - check application pages for actual torque ratings
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1,000 RPM (48 kW at 500 RPM, 95 kW at 1,000 RPM)
- Dimensions (H x W x L): 15.75" x 12.5" x 14"
Additional Information
The 877 Series is suited for high-torque, continuous-duty applications including refuse trucks, aerial equipment, snow and ice vehicles, fire and rescue apparatus, and oil and gas service trucks. Eight internal gear ratios provide speed versatility across installations. Pressure lubrication is integrated into the PTO housing and requires a single hose connection; the hose is included with the unit. Two assembly arrangements are available to maximize installation clearance. This series is listed as obsolete by Parker Chelsea; call Pro Gear and Transmission to confirm current availability and verify fitment for your specific transmission and chassis.
Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
