1652948 Oil Pump Lock Washer for Volvo FH12

What does an oil pump lock washer do?

This oil pump lock washer acts as a vital safety component within the engine lubrication system. It is engineered to prevent the bolts or nuts that secure the oil pump to the drive gear or crankshaft from loosening due to continuous engine vibration and torque fluctuations. By providing a mechanical lock, it ensures the oil pump maintains its precise position and drive engagement during operation.

Compatibility with Volvo FH12 engines

This specific part is designed for use in Volvo FH12 trucks equipped with D12A engines. It serves as an essential replacement component to maintain the integrity of the oil pump mounting assembly in these heavy commercial vehicle engines. Using a washer with the correct tab design and hardness is crucial for maintaining system pressure.

Installation and maintenance guidance

When performing engine maintenance, technicians should verify that the washer matches the bolt diameter and inner diameter of the existing hardware. The locking tabs must be correctly bent against the bolt head or housing surface to provide adequate resistance against rotation. Regular inspection during oil pump service is recommended to ensure no deformation has occurred.

Troubleshooting oil pressure issues

Proper installation of this washer helps prevent potential oil pressure drops caused by improper pump seating. While low oil pressure can stem from various issues, ensuring all fasteners are secured with high-strength components is a fundamental step in heavy-duty engine service.

OE cross-reference

0103 029 (Oil Pump Lock Washer Oil Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 1652948.