100001- Control Valve Assy 3-Spool for Komatsu FD35/40-7
Overview
The 100001- (3EC-61-35310) CONTROL VALVE ASS’Y, 3-SPOOL is the hydraulic control valve assembly specified for a wide range of Komatsu diesel forklifts in the 3.5 to 5 ton class. Its three spools direct pressurized oil to the lift, tilt and auxiliary circuits, giving the operator smooth, predictable control over each function. If your truck is showing slow or jerky lifting, a drifting mast or a loss of hydraulic response, a worn control valve is a common cause — fitting a new 100001- assembly restores consistent hydraulic performance.
Compatibility
This 3-spool control valve assembly fits the following Komatsu forklift series:
- FD35/40 series — FD35/40-7 and FD35/40-AT
- FD35Z/40Z series — FD35Z/40Z-7 and FD35Z/40Z-AT
- FD45 series — FD45-7 and FD45-AT
- FD50A series — FD50A-7 and FD50A-AT
Whether you need a 100001- for FD35/40-7 or a replacement valve for an FD50A-AT, this assembly is made to the (3EC-61-35310) reference design, so the mounting points and port layout line up with the existing hydraulic plumbing on these trucks. We recommend confirming fitment against your truck’s model and serial number before ordering.
Quality and Reliability
Control valves operate under continuous high pressure, so internal wear has a direct impact on lifting speed, mast holding and load control. This replacement for Komatsu equipment is built to match the original (3EC-61-35310) specification, with precision-machined spools and seal components suited to hydraulic duty. A properly sealing valve keeps the mast holding position under load and helps protect the pump and cylinders from abnormal internal bypass.
Installation and Maintenance Tips
- Relieve system pressure and disconnect the battery before starting work.
- Tag each hydraulic line during removal so the lift, tilt and auxiliary circuits are reconnected correctly.
- Fit new O-rings at the ports and tighten fittings to the torque values given in the Komatsu service manual.
- Use clean hydraulic fluid of the specified grade and refill to the correct level after installation.
- Bleed air from the circuit, cycle each spool function slowly and check every connection for leaks.
- At routine services, inspect the valve for external leaks, stiff spool action or slow response — replacing it early helps avoid unplanned downtime.
Why Order from Us
forkliftpartssearch.com specializes in forklift spare parts for the trucks fleets run every day. When you order the 100001- (3EC-61-35310) CONTROL VALVE ASS’Y, 3-SPOOL from us, our team can help you verify the part against your Komatsu model and serial number, answer technical questions and process your order promptly so your forklift is back in service with minimal downtime.