What causes cam bearing wear?
They suffer from the same operational conditions as do crankshaft bearings: overloading, oil starvation, too thin minimum oil film, misalignment, and contaminated oil. The possible failures are also similar: material fatigue, excessive wear, seizure, and corrosion.
Can a camshaft failure cause other engine parts to fail?
It’s not just camshafts that can wear or failthe camshaft bearings can have issues as well. Bearing failure can cause extensive damage to other engine components, so it’s important to identify the root cause of issues and repair them as soon as possible.
How does low oil pressure affect the camshaft?
The low oil pressure lowers the oil volume going to the camshaft. This in turn causes damage to the camshaft and scoring of the camshaft bearing caps (photo 2). The low oil volume to the camshaft also causes scoring of the camshaft bearing surfaces in the cylinder head. Over time, this ruins the cylinder head and the camshaft.
What happens when a camshaft bearing is not aligned?
For proper function, bearings have to fit correctly, be aligned and be supported. When that is not achieved, you can have damage to the bearing journal. The below image shows a bearing whose measurements and wear marks indicate that the camshaft bearing bore in the block was probably oversized.
What causes a camshaft bearing to become discolored?
Lack of Lubrication. Not enough lubrication allows for increased friction, which increases heat. The camshaft can then damage the bearing surface as it rotates, which, after further use, may eventually lead to a broken cam cap. The image depicts the discoloration of a bearing journal because of poor lubrication.
It’s not just camshafts that can wear or failthe camshaft bearings can have issues as well. Bearing failure can cause extensive damage to other engine components, so it’s important to identify the root cause of issues and repair them as soon as possible.
For proper function, bearings have to fit correctly, be aligned and be supported. When that is not achieved, you can have damage to the bearing journal. The below image shows a bearing whose measurements and wear marks indicate that the camshaft bearing bore in the block was probably oversized.
The low oil pressure lowers the oil volume going to the camshaft. This in turn causes damage to the camshaft and scoring of the camshaft bearing caps (photo 2). The low oil volume to the camshaft also causes scoring of the camshaft bearing surfaces in the cylinder head. Over time, this ruins the cylinder head and the camshaft.
What causes a camshaft bearing to turn black?
The following bearing became blackened due to overheating caused by misalignment: Not enough lubrication allows for increased friction, which increases heat. The camshaft can then damage the bearing surface as it rotates, which, after further use, may eventually lead to a broken cam cap.