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Swing motor parts

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Swing Motor Parts for Excavators

Find replacement swing motor parts for excavators at Fab Heavy Parts. This collection includes swing motor assemblies, seal kits, drive shafts, pressure relief valves, gears, carrier assemblies, and related swing reduction components for selected heavy equipment applications.

Whether you're repairing an individual component or replacing a complete swing motor, identifying the correct part starts with your machine details, motor assembly information, and the part number of your existing component.

Available Swing Motor and Swing Drive Components

Our swing motor parts collection covers different repair requirements within excavator swing systems.

  • Swing motors and assemblies: Replacement motor units for specified excavator applications.

  • Swing motor seal kits: Sealing components for compatible swing motor assemblies.

  • Drive shafts and gears: Replacement components used in designated swing motor or reduction assemblies.

  • Pressure relief valves: Individual valves for specified swing motor hydraulic applications.

  • Carrier assemblies and oil seals: Components for selected swing reduction and drive applications.

These parts serve different functions, so confirm which component your repair requires before selecting a replacement.

Excavator Applications and Replacement Options

Our swing motor parts collection includes products listed for Caterpillar, Komatsu, Hitachi, John Deere, Bobcat, Kobelco, CASE, and other equipment manufacturers.

Examples include swing motor 158-8985 for selected Caterpillar E320C and 320D excavators, seal kit 0814402 for listed Hitachi ZX-series machines, and drive shaft 6669196 for selected Bobcat excavators.

The swing motor parts collection also features Komatsu PC-series swing motor shafts, John Deere swing motor pressure relief valves, and Kobelco swing drive carrier assemblies.

Individual products may have different motor configurations and application requirements, even when listed for similar excavator models.

For shaft-specific replacement options, explore our excavator swing motor shafts collection.

Choosing Parts for Your Swing Motor Repair

Before ordering, identify the affected component and compare your part number of the existing component with the replacement swing motor parts listing. Check your excavator make, model, serial number, and swing motor identification where available.

For internal components, relevant details may include shaft dimensions, gear tooth counts, seal dimensions, or motor assembly references. Confirm these against the applicable product information and equipment parts documentation.

If the cause of a swing system problem has not been established, inspect the relevant motor, hydraulic, and reduction components according to the equipment manufacturer's service guidance before deciding which parts to replace.

Need Help Finding the Right Swing motor parts?

Can't find the replacement part you need? Send FAB Heavy Parts your part number, engine model, or equipment details. Our team can help review your requirements and provide a quotation.

Request a Quote

Frequently Asked Questions

How do I know which swing motor part I need for my excavator?

First, identify the component that needs replacement, such as the swing motor assembly, shaft, seal kit, gear, or relief valve. Compare the original part number with the replacement swing motor parts listing and check your excavator model, serial number, and swing motor identification. If the failed component has not been confirmed, we recommend diagnosing the swing system before ordering replacement parts.

Do I need to replace the entire swing motor, or can I replace individual parts?

It depends on the condition of your swing motor and the cause of the problem. If inspection identifies a damaged internal component, replacing that part may be an option. More extensive damage may require additional components or a complete motor replacement. Our collection includes both motor assemblies and individual repair parts, but the appropriate repair should be determined through inspection and the applicable service documentation.

Can I use the same swing motor parts on different excavators from the same manufacturer?

Not necessarily. Excavators from the same manufacturer may use different swing motor assemblies, shafts, seals, or hydraulic components. Even similar machine models can have different part requirements. We recommend checking the original part number and motor identification rather than assuming that parts are interchangeable because the equipment models are similar.

What should I check before installing replacement swing motor parts?

Before installation, confirm that the received component matches the ordered part number and the relevant original part details. Check for visible damage and compare applicable dimensions, connections, and component configurations. For internal motor repairs, follow the equipment manufacturer's service instructions for cleanliness, assembly, inspection, and any required testing. Do not install a component if compatibility remains uncertain.

Why is my excavator still having swing problems after replacing a swing motor part?

Swing problems can involve several components, including the hydraulic motor, control valves, swing reduction gearbox, and related hydraulic circuits. Replacing one component may not resolve the issue if another fault remains. We recommend checking the complete swing system using the manufacturer's diagnostic procedures and having a qualified technician investigate any continuing abnormal operation.

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