Skyjack Telescopic Boom Lifts

Coolant capacity & service interval

Skyjack Telescopic Boom Lifts require 11,4 liters of coolant. Service intervals include a check every 8 hours. The data covers 6 configurations.

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

TypeSpecifications
SJ 40T, GM 3.0L (98000001 - 98001330) (2008- )
  • Use: Normal
  • Capacity 11,4 liter
  • Check 8 hours
SJ 45T, GM 3.0L (98000001 - 98999999) (2008- )
  • Use: Normal
  • Capacity 11,4 liter
  • Check 8 hours
SJ 46A, GM 3.0L (2008- )
  • Use: Normal
  • Capacity 11,4 liter
  • Check 8 hours
SJ 46AJ, GM 3.0L (2008- )
  • Use: Normal
  • Capacity 11,4 liter
  • Check 8 hours
SJ 61T, GM 3.0L (97000001 - 97099999) (2008- )
  • Use: Normal
  • Capacity 11,4 liter
  • Check 8 hours
SJ 66T, GM 3.0L (97000001 - 97099999) (2008- )
  • Use: Normal
  • Capacity 11,4 liter
  • Check 8 hours

Additional Notes

  • All six Skyjack Telescopic Boom Lift configurations listed here share an identical cooling system capacity of 11.4 liters. A uniform capacity across multiple models points to a common engine installation rather than model-specific cooling circuit sizing.
  • The GM 3.0L engine is the power unit across every listed configuration, from the SJ 40T through to the SJ 66T. A shared engine family naturally produces consistent coolant volume requirements regardless of the boom lift's working height class.
  • The 11.4-liter figure represents a full cooling system fill, meaning the total volume of the radiator, engine block passages, hoses, and reservoir combined. A capacity at this level is typical for a liquid-cooled industrial engine operating in a mobile elevated work platform application.
  • The check interval for all listed configurations is every 8 hours of operation, which corresponds to a standard single-shift workday in industrial equipment scheduling. An 8-hour check interval reflects the safety-critical nature of maintaining proper coolant levels in machines used at height.
  • All rows carry a Normal use condition designation, meaning the 8-hour check interval applies under standard operating circumstances rather than under any elevated-stress or severe-duty classification.
  • The SJ 40T serial range is specified as 98000001 to 98001330, a notably narrow band compared to the SJ 45T range of 98000001 to 98999999. Both share the same 11.4-liter capacity and 8-hour check interval despite the difference in serial range breadth.
  • The SJ 46A and SJ 46AJ are listed without serial number range restrictions, while the SJ 40T, SJ 45T, SJ 61T, and SJ 66T each carry defined serial number boundaries. The cooling system specifications remain identical across both groups.
  • The SJ 61T and SJ 66T share the same serial range of 97000001 to 97099999, distinguishing them from the 98-series serial numbers assigned to the SJ 40T and SJ 45T. Despite operating in a higher working height class, the SJ 61T and SJ 66T retain the same 11.4-liter coolant capacity as the smaller boom models.