Exam 4: Engine Removal, Disassembly, Inspection, and In-Chassis Repairs

Technician A says that the ring ridge does not need to be removed if the pistons come out of the block easily. Technician B says that when installing a flywheel ring gear, heat it until it is red hot. Who is right?

Technician A says that during engine disassembly, all main and rod bearings should be kept in order in case they will be reused. Technician B says that there is no need to keep bearings in order if new parts are to be used. Who is right?

Technician A says that there is a correct sequence to follow when removing head bolts. Technician B says that when a cylinder wears, a ridge forms at the bottom of the cylinder. Who is right?

Technician A says to check the cylinder bores for size, taper, and out-of-round wear. Technician B says to check the crankshaft journals for size, taper, and out-of-round wear. Who is right?

Can core plugs be reinstalled after they have been removed?

The tenth digit of the VIN code will identify the engine size.

Technician A says to use an air impact wrench to remove rusted exhaust nuts. Technician B says that when installing a flywheel ring gear, heat it until it is red hot. Who is right?

What is another common name for the Parts and Time Guide used to determine the length of time to complete a job?

What is installed on rod bolts to protect the crank when removing the piston and rod assembly?

While discussing an in-vehicle engine repair, Technician A says that sometimes the engine mounts need to be loosened to remove the oil pan. Technician B says that sometimes the oil pump must be unbolted in order to remove the oil pan. Who is right?

Technician A says to label the core plugs as they are removed so they can be reinstalled. Technician B says to remove the core plugs before hot tanking the block. Who is correct?

What number is used by manufacturers to identify a particular vehicle?

What is a "fitted block?"

The engine should be cold before removing the head.

Technician A says that one reason all main and rod bearings should be kept in order during engine disassembly is in case they will be reused. Technician B says that there is no need to keep bearings in order if new parts are to be used. Who is right?

Which character of the VIN on a domestic car tells the engine code?

A flexplate is used with a manual transmission.

Technician A says that it is alright to disconnect the air conditioning lines and drain the refrigerant in a pan. Technician B says that certification is required to operate a refrigerant recycling machine. Who is right?

For passenger vehicles manufactured for sale in the United States (domestic cars), where is the VIN located?

Why must a fuel line be plugged even if no fuel leaks out when it is disconnected?