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Servicing Cylinder Heads




1.There will be carbon on the surfaces of the combustion chamber if water has been entering the chamber from a leaking head gasket.
True.
False.


2.There will be no carbon on the surfaces of the combustion chamber if water has been entering the chamber from a crack in the head.
True.
False.


3.Which of the following is true of installing thread inserts?
If the insert hole is too small, the cylinder head will be damaged.
If the insert hole is too large, the cylinder head will be damaged.
If the insert hole is too small, the insert will be damaged.
If the insert hole is too large, the insert will be damaged.


4.What must be done if too much metal is removed from a valve seat?
Replace the seat.
Rebuild the seat.
Either a or b.
Neither a nor b.


5.To minimize cylinder head distortion, technicians should:
Replace and tighten cylinder head bolts in the sequence opposite to the sequence used for their removal.
Tighten cylinder head bolts in the correct sequence and to the correct torque value.
Tighten cylinder head bolts to maximum torque.
Cylinder head bolts have no effect on cylinder head distortion.


6.When removing a cylinder head, the deck should always be placed:
Deck facing up.
Deck facing down.
Either a or b.
Neither a nor b.


7.When moving the cylinder head, it is important to keep the deck surface covered.
True.
False.


8.Which of the following is true of the camshaft?
The cam lobe-to-lifter interface is one of the highest load-carrying interfaces in the engine.
During assembly, a special lubricant is often applied to the camshaft and lifters.
A special lubricant protects against abnormal wear immediately after the engine start-up.
All of the above.


9.Tightening the rocker shafts on an OHC cylinder head with self-adjusting hydraulic lash adjusters will cause some of the valves to close.
True.
False.


10.It is important to store cylinder heads so dirt does not enter the open ports.
True.
False.

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