Komatsu Forklift trucks, electric, FB

Differential fluid capacity & service interval

Komatsu Forklift trucks, electric, FB use differential fluid with a capacity of 10 liters. Service intervals include checks at 3 months or 600 hours, changes at 6 months or 1200 hours, and changes at 1 month or 200 hours. The data covers 12 configurations.

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

TypeSpecifications
  • FB15SH-7, ABX (85001A ->)
  • + transferbox
  • Use: Normal
  • Capacity 10 liter
  • Check 3 months/ 600 hours
  • Change 6 months/ 1200 hours
  • FB15SH-7, ABX (85001A ->)
  • + transferbox
  • Use: Initial service
  • Capacity 10 liter
  • Change 1 months/ 200 hours
  • FB15SHE-7, ABX (85001A ->)
  • + transferbox
  • Use: Normal
  • Capacity 10 liter
  • Check 3 months/ 600 hours
  • Change 6 months/ 1200 hours
  • FB15SHE-7, ABX (85001A ->)
  • + transferbox
  • Use: Initial service
  • Capacity 10 liter
  • Change 1 months/ 200 hours
  • FB15SHH-7, ABX (85001A ->)
  • + transferbox
  • Use: Normal
  • Capacity 10 liter
  • Check 3 months/ 600 hours
  • Change 6 months/ 1200 hours
  • FB15SHH-7, ABX (85001A ->)
  • + transferbox
  • Use: Initial service
  • Capacity 10 liter
  • Change 1 months/ 200 hours
  • FB18SH-7, ABX (85001A ->)
  • + transferbox
  • Use: Normal
  • Capacity 10 liter
  • Check 3 months/ 600 hours
  • Change 6 months/ 1200 hours
  • FB18SH-7, ABX (85001A ->)
  • + transferbox
  • Use: Initial service
  • Capacity 10 liter
  • Change 1 months/ 200 hours
  • FB18SHE-7, ABX (85001A ->)
  • + transferbox
  • Use: Normal
  • Capacity 10 liter
  • Check 3 months/ 600 hours
  • Change 6 months/ 1200 hours
  • FB18SHE-7, ABX (85001A ->)
  • + transferbox
  • Use: Initial service
  • Capacity 10 liter
  • Change 1 months/ 200 hours
  • FB18SHH-7, ABX (85001A ->)
  • + transferbox
  • Use: Normal
  • Capacity 10 liter
  • Check 3 months/ 600 hours
  • Change 6 months/ 1200 hours
  • FB18SHH-7, ABX (85001A ->)
  • + transferbox
  • Use: Initial service
  • Capacity 10 liter
  • Change 1 months/ 200 hours

Additional Notes

  • The differential fluid capacity across all listed Komatsu FB electric forklift variants — FB15SH-7, FB15SHE-7, FB15SHH-7, FB18SH-7, FB18SHE-7, and FB18SHH-7 — is uniformly 10 liters. This figure covers the combined differential and transferbox assembly, meaning the single 10-liter value accounts for both components filled together rather than each being serviced independently.
  • All listed models carry the serial number designation ABX (85001A ->), indicating the specifications apply to units from that serial number onward.
  • Under normal use conditions, the differential and transferbox fluid is subject to a check interval of every 3 months or 600 hours, whichever comes first. The change interval under the same normal use condition is set at 6 months or 1,200 hours.
  • The dual-trigger interval structure — combining a calendar period with an operating hour threshold — reflects standard practice for equipment that may accumulate hours at varying rates. A unit reaching 600 hours before 3 months would trigger a check at the hour milestone rather than waiting for the calendar date.
  • An initial service interval is specified separately from the normal use schedule. Under initial service conditions, the differential and transferbox fluid change is due at 1 month or 200 hours. This early change is a break-in procedure, intended to remove metal particles and contaminants generated during the initial wear-in period of new gear surfaces.
  • The initial service change interval of 200 hours is significantly shorter than the normal change interval of 1,200 hours, representing a 6:1 ratio. After the initial service change is completed, the normal 6-month or 1,200-hour change schedule applies.
  • No capacity difference exists between the 1.5-tonne class models (FB15 series) and the 1.8-tonne class models (FB18 series). Both share the same 10-liter differential and transferbox capacity, suggesting a common drivetrain assembly across the two load ratings within the FB-7 generation.
  • The suffix variations within each tonnage class — SH, SHE, and SHH — represent different configurations of the same base model, yet all three share identical fluid capacities and service intervals for the differential and transferbox system.

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