Description
CAT 259D3 Hydraulic Drive Motor Assembly Nut - Part of OEM Kit Number 637-9508
Fits Machine: Caterpillar 259D3 Compact Track Loader
Fits Drive Motor Series: Bonfiglioli
Part of CAT Kit #: 637-9508
NOTE: This assembly nut only fits CAT Drive Part numbers 487-6186 and 30R-0533.
Purchase this Assembly Nut for the Final Drive on your CAT 259D3 Track Loader today! Located in the gearbox under the gear set assembly, this nut is also referred to as a Bearing Nut, Lock Nut, Spanner Nut, and Seal Nut. The spanner nut sets the preload on the hub bearings and keeps the drive sections together during operation. We recommend replacing the original if it was damaged during disassembly, has damaged threads, or is notably worn.
Rebuild your CAT 259D3 Final Drive with a brand-new Lock Nut! This bearing nut is part of CAT OEM kit 637-9508 and is manufactured to OEM spec for precision fit with OEM-level dependability.