Yanmar Excavator Slew Motor

Description

Yanmar Excavator Slew Motor Problems & Solutions

Yanmar excavators are trusted by contractors, hire companies, and utility operators for their efficiency and reliability in tight job sites. But when the slew motor (also known as the swing motor) begins to fail, it can cause costly downtime and affect your machine’s performance.

At Arena Hydraulic and Machinery, we specialise in repairing and supplying replacement slew motors for all popular Yanmar excavator models. Whether you’re dealing with swing lag, hydraulic leaks, or complete motor failure, we have the right solution — fast, affordable, and backed by expert support.

Common Slew Motor Problems in Yanmar Excavators

Even with Yanmar’s engineering standards, slew motors can wear out or get damaged under constant stress. We often see the following issues in compact and mid-sized models:

• Hydraulic oil contamination – Moisture or metal debris causes scoring and seal failure
• Leaking or worn seals – Leads to loss of pressure and swing inefficiency
• Internal bypass or loss of torque – Results in sluggish or inconsistent swing response
• Gearbox damage – Causes overload or misalignment in the swing motor
• Frequent directional changes – Accelerate wear in confined or high-cycle operations

High-Demand Yanmar Models for Slew Motor Replacements

We frequently service and stock parts for the following Yanmar models:

B Series:

B37, B50, B7

VIO Series:

VIO17, VIO20, VIO25, VIO35,

VIO45, VIO50, VIO55, VIO75, VIO80

SV Series:

SV100, SV120

These machines are commonly used in construction, earthmoving, and tight-access operations where swing motors undergo continuous use and high directional loads.

Slew Motor Services by Arena Hydraulic and Machinery

Professional Slew Motor Repairs

Our in-house technicians inspect, rebuild, and bench-test every Yanmar swing motor. We use precision tools, high-grade parts, and strict testing to ensure each rebuilt motor meets performance standards.

Brand-New Slew Motors

We stock aftermarket slew motors that are fully compatible with OEM Yanmar specs. Whether you’re replacing an old motor or upgrading for reliability, we supply units designed for long-term operation in harsh working conditions.

Why Choose Arena Hydraulic and Machinery?

• Specialists in hydraulic swing systems
• Fast and cost-effective repair or replacement options
• Australia-wide shipping from our stocked inventory
• Technical support from industry professionals
• Competitive pricing on parts and repairs

Need a Quote for Your Yanmar Slew Motor?

Avoid costly delays and keep your excavator moving. Contact Arena Hydraulic and Machinery for a fast quote on Yanmar swing motor repairs or replacements. Whether it’s a repair or a new unit, we’ll help you get the best value — delivered across AustraliaWhether it’s a repair or a new unit, we’ll help you get the best value, delivered across Australia.