Meritor Double reduction axles - tandem axles

Differential fluid capacity & service interval

Meritor Double reduction axles - tandem axles require Differential fluid with a capacity of 34 liters. Service intervals include Normal use. The data covers 4 configurations.

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

TypeSpecifications
  • SPR-570
  • Rear, leading
  • Use: Normal
  • Capacity 34 liter
  • SPR-570
  • Rear, trailing
  • Use: Normal
  • Capacity 34 liter
  • SPRC-4806
  • Rear, leading
  • Use: Normal
  • Capacity 34 liter
  • SPRC-4806
  • Rear, trailing
  • Use: Normal
  • Capacity 34 liter

Additional Notes

  • The SPR-570 leading rear differential carries a fluid capacity of 34 liters under normal use conditions, a volume consistent with heavy-duty axle housings designed to maintain adequate lubrication across large gear sets and bearing assemblies.
  • The SPR-570 trailing rear differential matches the leading unit at 34 liters, meaning both axles in the tandem configuration share an identical fluid capacity requirement under normal use conditions.
  • The SPRC-4806 leading rear differential also specifies a 34-liter capacity under normal use conditions, placing it in the same fill class as the SPR-570 despite being a distinct axle type.
  • The SPRC-4806 trailing rear differential carries the same 34-liter normal-use capacity as the leading unit, so a complete service of the SPRC-4806 tandem pair accounts for a combined 68 liters of differential fluid.
  • Across both the SPR-570 and SPRC-4806 tandem configurations, each individual differential position, whether leading or trailing, is specified at 34 liters, indicating that neither axle position in either type requires a differentiated fill volume.