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892
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The Parker Chelsea 892 Series Power Take-Off (PTO)isan ultra-heavy-duty, 10-bolt PowerShift extended-housing PTO engineered specifically to interface with the Allison 4700 Series automatic transmission. Mounted between the transmission casing and the truck frame rail, it bridges a severe clearance problem: it physically shifts the output pump mounting flange completely to the rear of the transmission where extra space is available. Unlike standard multi-piece PTO extensions that introduce weak points, the 892 Series is built around a solid, one-piece main shaft and places the internal clutch pack at the far rear. This architecture allows the main gear section to tuck tightly against the transmission casing, clearing bulkier vocational truck frames, oil coolers, or auxiliary retarders without sacrificing heavy-duty torque capacity.
Uncompromising One-Piece Extended Shaft : Built as a single integrated unit rather than a side-mount PTO matched with a bolt-on extension. This design eliminates intermediate connection splines , removing a common wear point and drastically increasing torque threshold limits.
Rear-Clutch Frame Cavity Clearance : By moving the internal clutch pack entirely to the rear of the unit, the front housing sections are narrowed significantly . This allows the main gear housing to tuck flush against the Allison transmission, effortlessly clearing narrow truck frame rails.
Standard Anti-Fretting Wet Spline Output : Every 892 variant features Chelsea's Wet Spline (W) lubrication design . This provides a constant bath of pressurized transmission oil directly over the mating pump shaft splines, completely eliminating fretting corrosion and extending pump lifespan.
Versatile Cooler and Retarder Adaptation : The casing geometry can be specifically ordered in specialized arrangements to clear transmission retarders, side-mounted oil coolers, or both simultaneously , allowing municipal truck fleets to run high-displacement hydraulic pumps.
| Parameter | Specification / Value |
|---|---|
| Transmission Compatibility | Designed exclusively for Allison 4700 Series automatic transmissions |
| Mounting Footprint | Standard heavy-duty 10-bolt vocational mounting aperture |
| Power Take-Off Shaft | One-piece main shaft design that eliminates weak internal extension splines |
| Shift Mechanism | Hydraulic or electro-hydraulic PowerShift with 12 V or 24 V solenoids, supporting hot shifting while operating |
| Maximum Torque Rating | Up to 670 lb-ft (908 N·m), depending on the selected internal gear ratio |
| Maximum Output Power | Up to 128 HP (95 kW) at 1,000 output-shaft RPM |
| Lubrication System | Factory-required Pressure Lube (P) with Wet Spline (W) technology |
| Output Flange Options | SAE B 2-/4-bolt, SAE C 4-bolt, SAE D 4-bolt, DIN 100, DIN 120, or ISO 7653 pump flanges |
| Output Shaft Options | 7/8 in 13-tooth, 1 in 15-tooth, 1-1/4 in 14-tooth, or 1-3/4 in 13-tooth male splined shafts |
| Structural Support | Factory side-mount interface with an additional rear-transmission stabilizer support bracket |
| Approximate Installed Weight | 86 lb (39 kg) |
Applications
Refuse & Garbage Trucks : Drives massive high-pressure piston or gear pumps to operate heavy residential packer cylinders and commercial container lifters.
Fire & Rescue apparatus : Supplies continuous high torque to operate high-output water pumps, foam injection systems, and large scene-lighting generator units.
Sewer Sanitation Vehicles : Powers heavy-duty industrial vacuum blower units and high-pressure water jetting pumps for municipal line flushing.
Heavy Aerial & Crane Trucks : Delivers precise fluid management to run high-reaching utility booms, concrete pumping arms, and multi-stage outrigger stabilizing jacks
892 PTO are typically packaged securely to prevent damage during transit. The packaging includes:
Protective Wrapping: To safeguard the pump from environmental damage.
Custom Crates: For larger, heavier pumps, ensuring safe handling.
Documentation: Includes installation, maintenance instructions, and warranty details.
Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.
Answer : It is designed explicitly to fit the Allison 4700 Series automatic transmission . It is engineered to handle the unique housing dimensions and gear pitches of this large-capacity vocational transmission family and cannot be used on smaller Allison 3000 series units.
Answer : Because the extended one-piece main shaft pushes the hydraulic pump mounting flange completely beyond the rear of the transmission, a large hydraulic pump can create severe overhung weight. To absorb intense road vibrations and prevent chassis torsion, the unit must be anchored via the side 10-bolt pattern and reinforced with the rear support bracket .
Answer : Yes. When mounted to the PTO drive gear of an Allison transmission, power is fed directly from the engine's torque converter impeller hub. This configuration provides continuous engine-driven power whether the vehicle is parked stationary or driving at speed , which is mandatory for applications like snowplowing or road sweeping.
Answer : No. While the 892 can be configured with an extra-large SAE D (1-3/4" 13-Tooth) shaft to drive massive pumps, the SAE D option is strictly unavailable on transmissions outfitted with an auxiliary cooler or retarder due to spatial envelope conflicts.
Answer : Metal-on-metal friction between a dry PTO output and a pump shaft creates microscopic movement that causes fretting corrosion, eventually welding the shafts together or stripping the teeth. The Wet Spline configuration keeps the mating shafts constantly lubricated in filtered oil , making it easy to swap or service hydraulic components years later.
6. Do you provide OEM or customized services
Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.
892 PTO are manufactured in compliance with international standards, ensuring high performance and reliability:
ISO 9001: Certified for quality management systems.
CE Certification: Ensures compliance with European safety, health, and environmental protection standards.
RoHS Compliance: Ensures the PTO does not contain hazardous materials.
Factory Testing: Every PTO is rigorously tested for performance, pressure, and leak integrity before shipping.
1.What's our advantages?
Factory established in 2005;
With a great deal of production experience;
80+ employees become the professional team;
Constant updated ERP system ensure efficiency of work;
Sophisticated equipment ehanced the accuracy of products;
Professional salesmen provide the greast service;
With a large number of famous customers all over the world;
Great after-sales service;
With the long term cooperation with famous logistics and express company in China,provide the better goods service.
Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.
Of course we can. Just send me your logo we can make it for you.
America(40.5%):USA, Canada, Argentina, Brazil
Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.
Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.
Others(5.8%).
The Cissoko hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.
The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.
Cissoko Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.
All hydraulic pumps produced by Cissoko Hydraulic have undergone compliance testing, ensuring their quality and reliability.
To meet the diverse needs of different industries, the Cissoko hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.
Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.
