Irisbus Arway

Automatic transmission fluid capacity & service interval

Irisbus Arway automatic transmission fluid capacity ranges from 15,5 to 28 liters. Service intervals include 60000 km/24 months, 120000 km/36 months, 150000 km/36 months, 300000 km/24 months, and 540000 km/36 months. The data covers 7 configurations.

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

TypeSpecifications
Arway 10-13m Euro 4 (2005-2013)
  • Use: Normal
  • Capacity 28 liter
  • Change 60000 km/ 24 months
  • Code: Voith D 864.5 4/1
Arway 10-13m Euro 4 (2005-2013)
  • Use: Extended
  • Capacity 28 liter
  • Change 120000 km/ 36 months
  • Code: Voith D 864.5 4/1
Arway 10-13m Euro 4 (2005-2013)
  • Use: Normal
  • Capacity 15,5 liter
  • Change 150000 km/ 36 months
  • Code: ZF 6HP604C 6/1
  • Arway 15m Euro 4 (2005-2013)
  • With intarder
  • Use: Normal
  • Capacity 21 liter
  • Change 300000 km/ 24 months
  • Code: ZF 12AS-2301 BO 12/2
  • Arway 15m Euro 4 (2005-2013)
  • With intarder
  • Use: First change only
  • Capacity 21 liter
  • Change 540000 km/ 36 months
  • Code: ZF 12AS-2301 BO 12/2
Arway 15m Euro 4 (2005-2013)
  • Use: Normal
  • Capacity 28 liter
  • Change 60000 km/ 24 months
  • Code: Voith D 864.5 4/1
Arway 15m Euro 4 (2005-2013)
  • Use: Extended
  • Capacity 28 liter
  • Change 120000 km/ 36 months
  • Code: Voith D 864.5 4/1

Additional Notes

  • The Irisbus Arway's automatic transmission carries a fluid capacity of 28 liters across both the 10-13m and 15m Euro 4 body lengths, a figure consistent with large-format coach transmissions where the pan, torque converter, and cooler circuit together account for a substantial combined volume.
  • For the 28-liter automatic transmission under normal use conditions, the change interval is set at 60,000 km or 24 months, whichever comes first, applying equally to both the 10-13m and 15m variants.
  • Under extended use conditions, the same 28-liter automatic transmission carries a doubled distance interval of 120,000 km, paired with a longer 36-month time limit, reflecting a less frequent service cycle compared to the normal use schedule.
  • A separate 15.5-liter capacity entry exists for the 10-13m Euro 4 automatic transmission under normal use, with a notably longer interval of 150,000 km or 36 months, suggesting a different transmission unit or a partial service fill rather than a full drain-and-refill procedure.
  • The 15m Euro 4 body length introduces an additional drivetrain configuration not present in the 10-13m specification: an automated transmission combined with an intarder, which is a hydrodynamic retarder integrated into the gearbox used for sustained speed reduction without engaging the service brakes.
  • The automated transmission with intarder on the 15m variant holds a fluid capacity of 21 liters, and under normal use conditions the change interval is 300,000 km or 24 months, a considerably longer distance threshold than the 60,000 km interval assigned to the conventional automatic transmission under the same use condition.
  • A first-change-only entry for the 15m automated transmission with intarder specifies a 540,000 km or 36-month interval at the same 21-liter capacity, indicating a single scheduled fluid exchange at that mileage or time point rather than a recurring service cycle.

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