GM60 Final Drive Travel Motor LC15V00023F2 LC15V00023F1 for Kobelco SK330-8 SK350-8

LC15V00023F2 / LC15V00023F1 GM60 Final Drive Travel Motor for Kobelco SK350-8

This aftermarket travel motor assembly is intended for Kobelco SK350-8 final drive replacement work. Public Kobelco material for the Mark 8 platform confirms that the travel system uses axial-piston, two-step travel motors, with hydraulic braking and oil-disc parking brakes. Public service-support excerpts identify LC15V00023F1 as the travel motor unit on this platform, and public catalog summaries indicate that LC15V00023F1 is superseded by LC15V00023F2 on SK350-8 listings. Nabtesco’s own public reporting also describes its GM Series travel units as integrated crawler drive units combining the hydraulic motor, reduction gear, valve, and parking brake in one compact assembly.

Common Failure Symptoms of a Worn Final Drive Travel Motor

Common service symptoms include slow or weak travel, abnormal sound with pressure fluctuation, travel creep under external load, poor high-speed travel selection, and external gear-oil leakage. In Kobelco-family travel-system troubleshooting references, low motor speed is linked to insufficient flow to the piston motor, motor creep under load is linked to parking-brake wear, poor rotation can be linked to contamination in the relief valve, unstable “pumping” behavior can be linked to contamination in the counterbalance valve plunger, and oil leakage can come from loose reduction-unit covers or leaking plugs.

Troubleshooting Checks Before Replacement

Before replacing the complete unit, start with system-side checks instead of assuming the motor itself is the only fault. Kobelco-family travel-system troubleshooting references recommend checking whether the motor is receiving the required flow, confirming correct motor orientation, checking hydraulic oil condition and level, inspecting for contamination in the relief valve and counterbalance valve, and checking pilot pressure if high-speed travel cannot be selected. If external leakage is present, inspect the reduction unit cover, plugs, and sealing points before condemning the entire assembly.

Installation and Maintenance Notes

For installation and service, do not publish guessed torques. The public Kobelco maintenance guidance I verified is procedural, not torque-based: always release hydraulic tank pressure before inspection or maintenance; before removing pipes, release hydraulic tank pressure, drain removed lines into a pan, and cap or plug the lines to prevent oil loss and dust entry. Online Kobelco manual excerpts also state that after removing and attaching hydraulic equipment, air release is required, and for a travel motor the engine should be run for 10 minutes or more at no-load and low speed to bleed the system.

For maintenance, public Kobelco-family manuals also state that O-rings and oil seals should be replaced at disassembly. For the SK350LC-8 platform, the public brochure lists travel reduction gear lubricant capacity as 2 × 9.5 L. In practice, that means you should check the reduction gear oil level after installation, inspect for leaks after the first run-in, and recheck the final drive after the machine has traveled under load.

Ordering and Fitment Check

Before ordering, verify the old unit tag, machine model, serial range, hose routing, and bolt-pattern details. Your current product page is already right to ask buyers to confirm exact model, sprocket bolt count, and hydraulic line routing before purchase, because internal component configuration can vary across production runs and rebuilding histories.

FAQ

Is LC15V00023F2 the same as LC15V00023F1?
Public catalog summaries indicate that LC15V00023F1 is superseded by LC15V00023F2 for SK350-8 listings, but the safest practice is still to confirm the motor tag and machine configuration before ordering.

What travel-system type does the SK350-8 platform use?
Public Kobelco literature for the SK330-8 / SK350LC-8 platform describes the travel system as two axial-piston, two-step motors, with a hydraulic brake and an oil-disc parking brake per motor.

What should be checked first when one track feels weak or slow?
First check whether the motor is receiving the required hydraulic flow, whether hydraulic oil level and condition are acceptable, and whether there is contamination affecting the relief valve, counterbalance valve, or 2-speed travel circuit. External leakage from the reduction unit should also be checked before replacing the complete assembly.