JCB Fastrac 135 Series

Differential fluid capacity & service interval

JCB Fastrac 135 Series differential fluid capacity ranges from 11,5 to 21 liters. Service intervals include checks at 250 hours and changes at 1000 hours or 12 months. The data covers 4 configurations.

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

TypeSpecifications
  • Fastrac 135, -> 636.000 (1991-1997)
  • Front
  • Use: Normal
  • Capacity 11,5 liter
  • Check 250 hours
  • Change 1000 hours/ 12 months
  • Fastrac 135, -> 636.000 (1991-1997)
  • Rear
  • Use: Normal
  • Capacity 21 liter
  • Check 250 hours
  • Change 1000 hours/ 12 months
  • Fastrac 135, 636.001-> (1991-1997)
  • Front
  • Use: Normal
  • Capacity 11,5 liter
  • Check 250 hours
  • Change 1000 hours/ 12 months
  • Fastrac 135, 636.001-> (1991-1997)
  • Rear
  • Use: Normal
  • Capacity 21 liter
  • Check 250 hours
  • Change 1000 hours/ 12 months

Additional Notes

  • The JCB Fastrac 135 Series carries two distinct differential fluid capacities depending on axle position: the front differential holds 11.5 liters, while the rear differential holds 21 liters.
  • The rear differential capacity of 21 liters is notably larger than the front, reflecting the greater housing volume typically associated with rear drive axles on agricultural tractors of this class.
  • Both the front and rear differentials share an identical service schedule under normal use conditions, with fluid level checks required every 250 hours and full fluid changes due at 1,000 hours or 12 months, whichever comes first.
  • The 12-month calendar interval running alongside the 1,000-hour change interval means that time elapsed can trigger a fluid change independently of machine hours, which is relevant for equipment operated at low annual utilization.
  • Specifications are divided between two serial number ranges: units up to serial number 636.000 and units from serial number 636.001 onward. Despite this split, the fluid capacities and service intervals are identical across both ranges for both the front and rear differentials.
  • The 250-hour check interval for both differentials is a level inspection rather than a change, serving as a periodic verification of fluid condition and volume between the longer 1,000-hour drain cycles.

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