JCB Fastrac 135 Series
Coolant capacity & service interval
JCB Fastrac 135 Series coolant capacity ranges from 28 to 34 liters. Service intervals include checks every 10 hours and changes every 2000 hours or 24 months. The data covers 2 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Fastrac 135, -> 636.000 (1991-1997) |
|
| Fastrac 135, 636.001-> (1991-1997) |
|
Additional Notes
- The JCB Fastrac 135 Series cooling system capacity differs by serial number range. Units up to serial number 636.000 hold 28 liters, while units from serial number 636.001 onward hold 34 liters, a difference of 6 liters between the two configurations.
- A 28-liter cooling system capacity, as seen in the earlier Fastrac 135 serial range, represents a substantial fill volume typical of agricultural tractor cooling circuits, where large coolant reserves help manage heat across extended field operation cycles.
- The later serial range from 636.001 onward carries a 34-liter capacity, indicating a larger or revised cooling circuit that requires a meaningfully greater volume of coolant to achieve a proper service fill.
- Both serial number ranges share an identical coolant check interval of every 10 hours of operation under normal use conditions, reflecting how frequently the coolant level is expected to be inspected relative to the change interval.
- The coolant change interval for both configurations is set at 2000 hours or 24 months under normal use conditions, whichever comes first. The dual-trigger structure means calendar time can mandate a change even when the hour threshold has not been reached.
- The 2000-hour change interval, applied to both Fastrac 135 serial ranges, is a relatively long service interval for coolant, consistent with heavy-duty agricultural equipment where extended drain intervals reduce downtime during seasonal work periods.