Doosan D510797 Lift Cylinder Kit | B13/15/16R5 Forklifts

Overview

The D510797 LIFT CYLINDER KIT(FFL, PRIMARY) is a Doosan replacement kit for the primary free-lift (FFL) cylinder on Doosan’s compact electric counterbalance forklifts. The lift cylinder does much of the daily work in a warehouse mast: every pallet movement pushes hydraulic fluid through the cylinder under pressure, and over time the internal seals harden, wear, and begin to leak. Typical symptoms include cylinder drift, slow or uneven lifting, visible oil around the mast, and reduced free-lift travel. Fitting a fresh D510797 kit restores the cylinder’s sealing performance and brings the mast back to smooth, predictable operation without replacing the entire cylinder assembly.

Compatibility

The D510797 for B13/15/16R5(SB1088) and related models covers several Doosan electric forklift series:

• B13/15/16R5 series (SB1088)
• B15/18S2 and B15/18S5 (SB1030, SB1086)
• BC15/18S, BC15/18S5 and BC20SC (SB1060)

OEM cross-reference numbers for this kit have not been published, so we recommend confirming fitment against your forklift’s model and serial number before ordering. Send us the details from your truck’s data plate and our team can verify that the D510797 LIFT CYLINDER KIT(FFL, PRIMARY) is correct for your machine.

Quality and Reliability

This kit is supplied under the Doosan part number D510797, so its components are produced to the same engineering standards Doosan applies to its original equipment. The seals and wear parts are matched to the cylinder’s working pressures and to the hydraulic fluid specifications of these electric trucks. Using the correct primary lift cylinder kit, rather than a generic seal assortment, helps prevent premature leaks, protects mast performance, and reduces the risk of unplanned downtime during busy shifts.

Installation and Maintenance Tips

• Park the truck on level ground, fully lower the mast or support it securely, and relieve all hydraulic pressure before disassembly.
• Disconnect the hydraulic lines and cap or plug them to keep contamination out of the system.
• Clean the cylinder exterior before opening it, and inspect the rod, barrel, and gland for scoring or damage beyond the seals.
• Fit the new seals from the kit using suitable tools, avoiding sharp metal objects that could nick the sealing edges.
• Refill with clean hydraulic fluid of the specified grade, bleed the cylinder, and check for leaks through several full lift cycles.

Always follow the model-specific service manual for torque values and detailed procedures.

Why Order from Us

forkliftpartssearch.com specializes in Doosan forklift parts, from complete lift cylinder kits to everyday wear components. We help you match part numbers like D510797 to your exact model and serial range, answer technical questions before you buy, and keep your maintenance schedule on track. Order the D510797 LIFT CYLINDER KIT(FFL, PRIMARY) today and restore dependable lift performance to your Doosan electric forklift.