148-4570 136-2798 Final Drive Travel Motor for Caterpillar 315B / 315B L

148-4570 / 136-2798 Final Drive Fitment & Cross Reference

The 148-4570 final drive and travel motor assembly is the definitive track drive solution for the 15-ton excavation class, specifically engineered for Caterpillar 315B and 315B L machines. Built around the robust MAG-85VP-2400 hydraulic architecture, this drive unit serves as a 100% direct cross-reference for OEM part numbers 136-2798, 151-5108, and 136-2850.

• Inventory & Fitment Note: We supply premium, OEM-grade assemblies that guarantee a seamless drop-in installation with your machine's original hydraulic lines. To ensure 100% compatibility, please verify your sprocket bolt pattern and hose layout prior to ordering.

Common Failure Symptoms of the Cat 315B Travel Motor

Heavy-duty excavators like the 315B frequently operate in abrasive environments. You should consider replacing your entire travel motor assembly if you experience:

• Persistent gear oil leaks from the main floating seal.

• A noticeable loss of tracking power or veering to one side when climbing inclines.

• Severe grinding noises or metallic debris inside the planetary gearbox.

Replacing the complete assembly is often more cost-effective and reliable than attempting to rebuild a severely contaminated unit piece by piece.

FAQ

Q: Will the 148-4570 final drive fit both the standard 315B and the 315B L (Long Undercarriage)?A: Yes. The 148-4570 travel motor assembly is fully compatible with both the standard Caterpillar 315B and the 315B L models, as they share the same baseline hydraulic and track drive architecture.

Q: My parts manual lists 136-2798 as the travel motor. Is this the right replacement?A: Absolutely. 148-4570 is the direct cross-reference and updated assembly for the older 136-2798 and 151-5108 part numbers. It will bolt on perfectly to your existing machine frame.

Q: Does this travel motor assembly come pre-filled with gear oil?A: No. For international shipping safety, all final drives are shipped dry. You must fill the planetary gearbox with the manufacturer-recommended standard gear oil prior to operating the machine to prevent catastrophic gear failure.