Mustang Telescopic handlers

Automatic transmission fluid capacity & service interval

Mustang Telescopic handlers require Automatic transmission fluid with a capacity range of 11,3 to 22,7 liters. Service intervals include checks at 10 hours and changes at 100 hours or 1000 hours/12 months. The data covers 8 configurations.

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

TypeSpecifications
  • 1155, John Deere 4045T Tier 3 (2008-2012)
  • Powershift
  • Use: Normal
  • Capacity 11,3 liter
  • Check 10 hours
  • Change 1000 hours/ 12 months
  • Code: Clark T16000 4/2
  • 1155, John Deere 4045T Tier 3 (2008-2012)
  • Powershift
  • Use: Initial service
  • Capacity 11,3 liter
  • Change 100 hours
  • Code: Clark T16000 4/2
  • 634, John Deere 4045T Tier 3 (2008-2012)
  • Powershift
  • Use: Normal
  • Capacity 22,7 liter (+ cooler)
  • Check 10 hours
  • Change 1000 hours/ 12 months
  • Code: Clark T12000 3/3
  • 634, John Deere 4045T Tier 3 (2008-2012)
  • Powershift
  • Use: Initial service
  • Capacity 22,7 liter (+ cooler)
  • Change 100 hours
  • Code: Clark T12000 3/3
  • 744, John Deere 4045T Tier 3 (2008-2012)
  • Powershift
  • Use: Normal
  • Capacity 11,3 liter
  • Check 10 hours
  • Change 1000 hours/ 12 months
  • Code: Clark T16000 4/2
  • 744, John Deere 4045T Tier 3 (2008-2012)
  • Powershift
  • Use: Initial service
  • Capacity 11,3 liter
  • Change 100 hours
  • Code: Clark T16000 4/2
  • 944, John Deere 4045T Tier 3 (2008-2012)
  • Powershift
  • Use: Normal
  • Capacity 11,3 liter
  • Check 10 hours
  • Change 1000 hours/ 12 months
  • Code: Clark T16000 4/2
  • 944, John Deere 4045T Tier 3 (2008-2012)
  • Powershift
  • Use: Initial service
  • Capacity 11,3 liter
  • Change 100 hours
  • Code: Clark T16000 4/2

Additional Notes

  • The Mustang 634 telescopic handler carries a powershift transmission capacity of 22.7 liters plus cooler volume, which is roughly double the 11.3-liter figure shared by the 1155, 744, and 944 models. The cooler addition noted in the 634 specification indicates that the stated capacity accounts for fluid held outside the main transmission housing.
  • All four models share an initial service change interval of 100 hours for the powershift transmission. An initial service interval at 100 hours is standard practice for break-in periods, during which metal particles and manufacturing residues accumulate in the fluid more rapidly than during normal operation.
  • Under normal use conditions, the powershift transmission fluid change interval across all four models is set at 1,000 hours or 12 months, whichever comes first. The dual-trigger structure means time elapsed can mandate a change even when the hour threshold has not been reached.
  • A fluid level check interval of 10 hours is specified under normal use for all four models. A 10-hour check frequency is notably short and reflects the operational demands placed on powershift transmissions in telescopic handler applications.
  • The 1155, 744, and 944 models all share an identical powershift transmission capacity of 11.3 liters, suggesting a common transmission unit across those three configurations despite differences in the machines themselves.
  • The initial service specification for all four models lists only a change interval of 100 hours, with no separate check interval stated. The normal use rows, by contrast, include both a check interval and a change interval, indicating a distinction in service requirements between the break-in period and ongoing operation.

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