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Technician A says that on some engines, valve stem seals can be replaced without removing the head.

Technician B says that rocker arms can affect valve lift.

Who is correct?

A. A only
B. B only
C. Both A and B
D. Neither A nor B

Answer :

Final answer:

Both Technician A and Technician B are correct regarding their statements about valve stem seals and rocker arms. Valve stem seals can indeed be replaced without head removal depending on the engine design, and rocker arms do affect valve lift. Thus, the answer is C, as both statements are true.


Explanation:

Understanding Valve Stem Seals and Rocker Arms

In this scenario, let’s analyze the statements from Technician A and Technician B:

  1. Technician A: Says on some engines, valve stem seals can be replaced without removing the head. This statement is correct. In many engine designs, it is possible to replace valve stem seals by using specialized tools that allow access through the springs, without the need to remove the entire cylinder head.
  2. Technician B: Claims that rocker arms can affect valve lift. This statement is also correct. Rocker arms play a crucial role in transferring motion from the camshaft to the valves, and they can indeed affect how much the valve lifts when the engine operates.

Since both statements are true, the correct answer to the question is option C. Both A and B.


Learn more about Engine Mechanics here:

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