Yanmar Wheeled excavators

Differential fluid capacity & service interval

Yanmar wheeled excavators require differential fluid with a capacity range of 6,5 to 8 liters. Service intervals include checking at 100 hours, changing at 100 hours, and changing at 1000 hours or 12 months. The data covers 12 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • B95W AL Stage IV/ Tier 4f, S/N TW09540100-> (2018- )
  • Front
  • Use: Normal
  • Capacity 7,4 liter
  • Check 100 hours
  • Change 1000 hours/ 12 months
  • B95W AL Stage IV/ Tier 4f, S/N TW09540100-> (2018- )
  • Front
  • Use: Initial service
  • Capacity 7,4 liter
  • Change 100 hours
  • B95W AL Stage IV/ Tier 4f, S/N TW09540100-> (2018- )
  • Rear
  • Use: Normal
  • Capacity 7 liter
  • Check 100 hours
  • Change 1000 hours/ 12 months
  • B95W AL Stage IV/ Tier 4f, S/N TW09540100-> (2018- )
  • Rear
  • Use: Initial service
  • Capacity 7 liter
  • Change 100 hours
  • B95W S Stage IV/ Tier 4f, S/N TW09540100-> (2018- )
  • Front
  • Use: Normal
  • Capacity 6,5 liter
  • Check 100 hours
  • Change 1000 hours/ 12 months
  • B95W S Stage IV/ Tier 4f, S/N TW09540100-> (2018- )
  • Front
  • Use: Initial service
  • Capacity 6,5 liter
  • Change 100 hours
  • B95W S Stage IV/ Tier 4f, S/N TW09540100-> (2018- )
  • Rear
  • Use: Normal
  • Capacity 8 liter
  • Check 100 hours
  • Change 1000 hours/ 12 months
  • B95W S Stage IV/ Tier 4f, S/N TW09540100-> (2018- )
  • Rear
  • Use: Initial service
  • Capacity 8 liter
  • Change 100 hours
  • B95W Stage IV/ Tier 4f, S/N TW09540100-> (2018- )
  • Front
  • Use: Normal
  • Capacity 7,4 liter
  • Check 100 hours
  • Change 1000 hours/ 12 months
  • B95W Stage IV/ Tier 4f, S/N TW09540100-> (2018- )
  • Front
  • Use: Initial service
  • Capacity 7,4 liter
  • Change 100 hours
  • B95W Stage IV/ Tier 4f, S/N TW09540100-> (2018- )
  • Rear
  • Use: Normal
  • Capacity 8 liter
  • Check 100 hours
  • Change 1000 hours/ 12 months
  • B95W Stage IV/ Tier 4f, S/N TW09540100-> (2018- )
  • Rear
  • Use: Initial service
  • Capacity 8 liter
  • Change 100 hours

Additional Notes

  • Across all three variants of the Yanmar Wheeled Excavators B95W series covered here, each machine carries two separate differential fluid capacities — one for the front axle and one for the rear — meaning a full service requires accounting for both fills independently rather than treating the drivetrain as a single system.
  • The B95W AL front differential holds 7.4 liters, while the rear differential holds 7 liters, making the front axle the larger of the two fills on that particular variant.
  • On the B95W S, the front differential capacity is 6.5 liters and the rear differential capacity is 8 liters, reversing the front-to-rear relationship seen on the B95W AL, with the rear axle now holding the greater volume.
  • The B95W (base variant) front differential shares the 7.4-liter capacity of the B95W AL front axle, while the rear differential matches the B95W S rear axle at 8 liters, placing the base variant between the other two configurations depending on which axle is referenced.
  • Under normal use conditions, all three variants specify a fluid level check at every 100 hours, which is a relatively frequent inspection interval and reflects the load demands typical of wheeled excavator axle components.
  • The normal-use change interval for all differentials across the B95W series is 1,000 hours or 12 months, whichever comes first, meaning calendar time can trigger a change even when the hour threshold has not been reached.
  • An initial service change is specified at 100 hours for every differential position across all three variants. At 100 hours, a change is required rather than just an inspection, distinguishing the initial service interval from the routine check that falls at the same hour mark under normal use conditions.
  • The initial service interval of 100 hours applies to both the front and rear differentials on the B95W AL, B95W S, and B95W base variant, and no capacity difference exists between the initial service fill and the normal-use capacity within any single configuration.
  • All specifications covered apply to units with serial numbers from TW09540100 onward, meaning machines with earlier serial numbers fall outside the scope of these particular capacity and interval figures.

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