Komatsu 3EC-30-31110 Cylinder Assy for FD35/40-7 Forklifts

Overview

The 3EC-30-31110 CYLINDER ASS’Y is a replacement cylinder assembly for Komatsu counterbalance forklifts in the 3.5-5.0 tonne class. When a cylinder starts to leak, lose pressure or show visible wear, fitting a correct replacement is the most dependable way to restore safe, consistent operation. This assembly is made to match the original Komatsu specification for the listed trucks, so it installs in place of the factory unit without modification. If you have been searching for the 3EC-30-31110 for FD35/40-7 or any of the compatible models below, you can order it directly from this page.

Compatibility

The 3EC-30-31110 cylinder assembly fits Komatsu diesel (FD) and gasoline (FG) powered forklifts across two generations:

• 7-series: FD35/40-7, FD45-7, FD50A-7, FG35/40-7, FG45-7
• 8-series: FD35/40-8, FD45-8, FD50A-8

Before ordering, confirm the part number on the label of your existing cylinder or check your Komatsu parts manual, as related trucks in these series may use different assemblies.

Quality and Reliability

Cylinders operate under continuous pressure, so build quality directly affects both performance and safety. The 3EC-30-31110 is produced as a direct replacement for the original Komatsu unit, matching the mounting points, stroke and connection dimensions of the factory assembly. A correct-specification cylinder helps prevent fluid loss, pressure drift and the premature wear that often follows improvised repairs. Every unit is supplied as a complete assembly, ready to fit in place of the worn original – no rebuild kits or loose components to source separately.

Installation and Maintenance Tips

• Relieve the hydraulic system pressure and secure the forklift before removing the old cylinder.
• Label hoses and lines before disconnection to make reinstallation straightforward.
• Replace worn hoses, O-rings or fittings in the same circuit while the cylinder is out.
• After installation, bleed air from the hydraulic system and check carefully for leaks under load.
• Inspect the cylinder regularly for seepage, scored surfaces or damaged mounting points, and keep the exposed rod clean to extend sealing life.

If you are not equipped for hydraulic repairs, have the replacement carried out by a qualified forklift technician.

Why Order from Us

ForkliftPartsSearch.com specializes in spare parts for forklifts from leading brands, including Komatsu. When you order the 3EC-30-31110 CYLINDER ASS’Y from us, you get a correctly specified part for your truck, support from a team that understands forklift components, and help verifying compatibility before purchase. Need a different Komatsu cylinder or another wear part? Our catalog covers thousands of references for 7-series and 8-series trucks and beyond. Order the 3EC-30-31110 today, or contact our team with your model and serial number for confirmation before checkout.