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489
cissoko
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The Parker Chelsea 489 Series Power Take-Off (PTO) isa heavy-duty, 6-bolt internal gear PowerShift PTO designed specifically for Allison automatic and Caterpillar transmissions. Positioned as a dominant workhorse in the commercial trucking market, it bridges a crucial design challenge: it features a compact 6-bolt mounting footprint on the outside but utilizes heavy-duty 8-bolt internal gear components on the inside. This specialized architecture gives vocational truck builders maximum torque delivery and structural durability while fitting onto tighter, standard 6-bolt transmission mounting apertures.
Unique 8-Bolt Strength in a 6-Bolt Frame : Built with Chelsea's patented housing concept. It allows a standard 6-bolt transmission opening to utilize larger, heavy-duty 8-bolt internal gear pitches, increasing structural load limits by up to 25% over standard 6-bolt PTOs.
Failsafe Controlled-Pressure Hot Shifting : Utilizes an integrated internal clutch pack activated by an electric 12V or 24V solenoid valve . This enables operators to engage tools smoothly under power without gear grinding or stopping the vehicle.
Anti-Fretting Wet Spline Lubrication Option : The Wet Spline (W) design introduces a constant bath of transmission fluid directly over the mating pump shaft splines. This continuous oil coating completely eliminates fretting corrosion , preventing the pump shaft from binding or stripping out inside the PTO clutch.
Rugged Ductile Iron Housing : The entire chassis is cast from upgraded ductile iron. This heavy-duty metal provides exceptional rigidity, minimizing housing flex and preventing gear misalignment when supporting bulky, overhung hydraulic pumps.
| Parameter | Specification / Value |
|---|---|
| Speed Ratio / Gear Ratio | 25/34 |
| Output Type / Option | SAE “B” 2- or 4-Bolt Flange; SAE “B” Shaft |
| Mounting Option | Standard 8-Bolt Mount |
| PTO Type / Model | 489 Series |
| Lubrication Option | No Pressure Lubrication |
| Special Features | Includes Air-Shift Mounting Parts |
| Transmission Gear / Input Option | Universal |
| Assembly Arrangement | Right Side: Bulge Down; Left Side: Bulge Up |
| Shift Type / Option | Air Shift |
| VMRS Code | 056001001 |
Applications
Fire and Rescue Vehicles : Provides immediate, high-horsepower engagement under load to drive high-volume water pumps and aerial ladders.
Dump Trucks & Trailers : Operates the large hydraulic cylinders needed to raise and lower heavy dump beds quickly and safely.
Cranes & Boom Trucks : Supplies smooth, continuous hydraulic flow for precise control of telescopic booms and outriggers.
Vacuum & Sewer Cleaner Trucks : Runs high-capacity vacuum pumps and high-pressure water jetters for municipal and industrial cleanup.
Fuel & Chemical Tankers : Drives product pumps to safely offload bulk liquids and hazardous materials.
489 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 : The main advantage is its 8-bolt internal design packed inside a standard 6-bolt casing . It bridges an engineering gap by allowing trucks that only have a standard 6-bolt transmission aperture to achieve the heavy-duty gear pitch, torque capacity, and durability normally restricted to much larger, heavier 8-bolt transmission openings.
Answer : Yes. When mounted on a compatible Allison automatic transmission, the drive gear connects straight to the torque converter impeller hub. This configuration provides continuous engine-driven power whether the truck is completely stationary or driving down the highway , which is critical for vocational vehicles like street sweepers, refuse packers, and snowplows.
Answer : Yes. The 489 Series relies on a Pressure Lube (P) or Wet Spline (W) circuit . You must install the factory-supplied high-pressure hose line between the specific pressure port on the transmission casing and the inlet port on the PTO body to ensure constant bearing lubrication and prevent immediate internal gear seizure.
Answer : Yes. Depending on your vocational truck's chassis clearance, exhaust catalytic converter layouts, and tool spacing, the Chelsea 489 can be ordered with input gear pitches customized to mount on either the left (driver) or right (passenger) side standard 6-bolt apertures of compatible transmissions.
Answer : The Wet Spline (W) design introduces a constant bath of filtered transmission fluid directly over the mating pump shaft splines. This continuous oil coating completely eliminates fretting corrosion caused by metal-on-metal friction , making it significantly easier to remove or service the direct-mounted hydraulic pump years down the road without the shaft stripping out inside the PTO clutch.
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.
489 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.
