An OHC cylinder head is being installed on an engine. Technician A says that some OHC cylinder heads cannot be installed if the camshaft is not positioned correctly at TDC. Technician B says that valves can be bent if the correct procedures are not followed. Who is right?
A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question

Quizplus · Accepted Answer

Both technicians are correct. Technician A is right because the alignment of the camshaft at Top Dead Center (TDC) is crucial for some Overhead Cam (OHC) engines during cylinder head installation to ensure proper timing and valve operation. Technician B is correct because incorrect installation procedures, including improper timing alignment, can lead to valves contacting the piston, causing them to bend.

An OHC Cylinder Head Is Being Installed on an Engine