Final answer:
S-cam bushings and S-cam roller faces are lubricated with chassis grease as part of a lube job for brake components.
Step-by-step explanation:
In a lube job for brake components, S-cam bushings and S-cam roller faces are lubricated with chassis grease. The S-cam bushings are located in the brake chamber and play a crucial role in facilitating the movement of the S-cam. Similarly, the S-cam roller faces are part of the S-cam assembly and need to be lubricated to ensure smooth operation of the brake system.