890 Series PowerShift Power Take-Off
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Chelsea 890 Series was designed to fit the Allison 3000/4000 Series transmissions. This design moves the PTO/Pump mounting flange to the rear of the transmission for better pump clearance. All 890s have Wet Spline outputs for longer pump spline life.
Chelsea 890 Series Power Take-Off (PTO) is a hydraulic hot shift PTO for the Allison 3000 & 4000 transmissions that provides better clearance with the highest torque rating in the industry – up to 670 lbs-ft. It fits neatly between the transmission and the frame rail of the truck and locates the pump output to the rear of the transmission for adequate space. It mounts like a standard side mounted PTO but includes an additional bracket at the rear of the transmission for support. The 890 Series is a single unit, not a PTO with an extension. The main shaft is one-piece shaft eliminating the input splines between the PTO and the output extension. The clutch is located at the rear of the PTO to allow the housing and gear section to tuck in tightly to the transmission for improved clearance. The output utilizes Wet Spline Technology which extends PTO and pump shaft life in demanding conditions. The 890 Series can be ordered for transmissions with or without a cooler or retarder or both. It is a perfect PTO for aerial trucks, fire & rescue trucks, snow & ice, or anywhere pump space and high torque is required.
Markets:
- Aerial
- Defense
- On-Highway
- Other Mobile
Features and Benefits:
- Extended shaft to improve pump clearance
- Continuous-Duty Torque Rating up to 670 ft-lbs
- Wet-Spline Option to extend PTO/Pump shaft life
- Two Year Warranty
Applications:
- Fire & Rescue Trucks
- Pumper Cleaner
- Truck Cranes
- Refuse Trucks
Intermittent Torque:
- 501+ lb-ft
- 501+ Nm
Mounting Type:
- 10-Bolt
Output Flange Type:
- SAE C
Output Flange Type:
- SAE C
- SAE "C" ("XS") Output
Output Power:
- 56+ HP
- 51+ kW
Transmission Manufacturer:
- Allison
Shift Type:
- Hydraulic
- PowerShift (Hydraulic)
Continuous Torque:
- 908 (Check Application Pages for Actual Torque Ratings) lb-ft
- 670 (Check Application Pages for Actual Torque Ratings) Nm
Shaft Power:
- 500 RPM: 64, 1000: RPM 128 HP
- 500 RPM: 48, 1000: RPM 95 kW
Weight:
- 88 lb
- 39 kg
Literature and Reference Materials:
- 890 Series Owners Manual - HY25-1890-M1_US
- 890 Series Parts List - HY25-2890-M1_US
- 890 Series Sales Literature - HY25-0081-B1_US
- 890 Series Sales Literature - HY25-0120-B1_US
- Chelsea EOC Box Owners Manual - HY25-1650-M1_US
- Chelsea EOC Box Sales Literature - HY25-0096-B1_US
- Chelsea Power Take-Off (PTO) General Information Catalog
- Chelsea Power Take-Off (PTO) Quick Reference Guide
- Chelsea Power Take-Off (PTO) Stud Kits - HY25-2002-M1_US
- Chelsea Power Take-Off (PTO) Wet Spline Option
- Chelsea Service Manual - HY25-6890-M1/US
- PTO-PNI-216 - Output Flange Cover Plates for 890/897 Series
- PTO-PNI-249 - New Ratios for 870/877 and 890/897 Series on Allison 4000 Series Transmissions
- PTO-PNI-264 - 890/897 Family Lube Hose Changes
- PTO-PNI-277 - PTO Switch Bracket Update
Product Demos & Tutorials:
Selector Guides:
Compliance, Certifications and Safety: