College

On an OHC engine with removable bearing caps, which of the following is used to measure bearing alignment?

A. Straightedge
B. Plastigauge
C. Dial indicator
D. Telescoping gauge

Answer :

Final answer:

Plastigauge is used to measure bearing alignment in an OHC engine with removable bearing caps, providing an accurate clearance measurement using a comparison scale.

Explanation:

When working on an Overhead Cam (OHC) engine with removable bearing caps, the correct tool used to measure bearing alignment is called Plastigauge. Plastigauge is a specifically designed, pliable gauge that measures the clearance or space between fitted surfaces of the engine, such as between the bearings and the journal. To use Plastigauge, a piece of it is placed on the journal, the cap is then torqued down to specifications, and the cap is removed to compare the width of the flattened Plastigauge to a provided scale. This method is simple yet accurate for ensuring the correct bearing clearance.