Komatsu 3BA-61-51311 Control Valve Ass’y for FB10/14EX-8

Overview

The 3BA-61-51311 CONTROL VALVE ASS’Y is a replacement hydraulic control valve assembly for Komatsu electric counterbalance forklifts in the 8-series FB range. Mounted in the truck’s hydraulic circuit, this valve directs pressurised oil to the lift and tilt cylinders, giving the operator smooth and predictable mast control. When a control valve wears out, operators often notice drifting forks, slow or jerky lifting, or inconsistent hydraulic response. Fitting the correct Komatsu valve assembly is the dependable way to restore full hydraulic function.

Compatibility

The 3BA-61-51311 for FB10/14EX-8 trucks is also shared across a family of closely related Komatsu electric models, so one part number can cover several trucks in a mixed fleet:

• FB10/14EX-8 series — including the FB10/14EXF-8
• FB15/18EX-8 series — including the FB15/18EX-8-EC, FB15/18EXF-8, FB15/18EXG-8, FB15/18EXG-8-EC and FB15/18EXGF-8 variants

These compact 1.0–1.8 tonne electric forklifts are widely used in warehouses, distribution centres and manufacturing plants where clean, emission-free operation is required. Before ordering, always confirm the model designation and serial number of your truck against the Komatsu parts manual to help ensure a correct match.

Quality and Reliability

The 3BA-61-51311 is produced to match Komatsu’s original design in dimensions, port positions and hydraulic operating parameters, so it is intended as a direct replacement for the worn assembly. The internal spools, springs and seals are the components that see the most work in any control valve, which is why replacing the complete assembly — rather than chasing individual seals — is usually the most dependable long-term repair for an aging hydraulic system. Keeping original-spec Komatsu valves in the circuit helps protect lift speed, tilt response and overall productivity.

Installation and Maintenance Tips

Basic guidance for fitting the new valve assembly:

• Depressurise the hydraulic system and disconnect the battery before starting work.
• Photograph hose and port positions before removing the old valve to simplify reassembly.
• Replace worn O-rings and seals, and use new sealing hardware on the fittings.
• Torque mounting and port fasteners to the values specified in the Komatsu service manual.
• Inspect the hydraulic oil and replace the return filter if contamination is visible.
• After installation, cycle the lift and tilt functions slowly and check for leaks before returning the truck to service.

If your team does not carry out hydraulic repairs regularly, we recommend having a qualified forklift technician perform the replacement.

Why Order from Us

forkliftpartssearch.com specialises in spare parts for forklifts of every major make, including a wide selection of Komatsu components. When you order the 3BA-61-51311 CONTROL VALVE ASS’Y from us, our team is available to confirm fitment for your specific model and serial number before you buy, and we can help you identify any related seals or hardware you may need for the job. Send us your part number or add it to your quote request — we will respond quickly and help get your Komatsu forklift back to work.