Technician A says to use a coarse sandpaper when cleaning bimetal engines with super-smooth cast iron block surfaces. Technician B says a sharp gasket scraper is recommended for use on machined aluminum. Who is correct?
A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question

Quizplus · Accepted Answer

Neither technician is correct. Coarse sandpaper should not be used on any engine surface, let alone super-smooth cast iron block surfaces. A clean, soft rag or plastic scraper is recommended for cleaning bimetal engines. Similarly, a gasket scraper should not be sharp, as it can damage machined aluminum surfaces. Instead, a plastic scraper or a dull putty knife should be used on machined aluminum.

Technician a Says to Use a Coarse Sandpaper When Cleaning