Copyright by Goodheart-Willcox Co., Inc.
514 Auto Engine Repair
10. What is the difference between a timing belt cover
and an engine front cover?
11. This is measured with a dial indicator with the indica-
tor plunger resting on one of the timing gear teeth.
(A) Timing gear runout.
(B) Timing gear diameter.
(C) Timing gear out-of-round.
(D) Timing gear backlash.
12. What is the purpose of the crankshaft front seal?
13. What type of sealer should be used on the outside
diameter of the crankshaft front seal?
14. What is the purpose of the engine front cover?
15. Why should you never hammer on the outer ring of
the vibration damper?
ASE-Type Questions—Chapter 23
1. An engine is being serviced. Worn camshaft lobes are
found and the camshaft is being replaced. The car has
35,000 miles (56,300 km) on it. Technician A says
that the timing belt should be replaced. Technician B
says that the belt is good for 50,000 miles (80,500 km)
and it should be reused. Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
2. Technician A says that most engines must be removed
from the vehicle in order to replace the timing chain.
Technician B says that normally, a timing chain can
be replaced without removing the engine from the
vehicle. Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
3. Technician A says that timing chain wear can reduce
engine compression. Technician B says that timing
chain wear can affect exhaust cleanliness. Who is cor-
rect?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
4. Most manufacturers recommend replacing an engine’s
timing belt about every _____.
(A) 50,000 miles (80,500 km).
(B) 70,000 miles (110,000 km)
(C) 100,000 miles (160,000 km)
(D) 200,000 miles (320,000 km)
5. Technician A says that the camshaft sprocket mark
should normally be aligned with a mark on the side
of the engine. Technician B says that the camshaft
sprocket mark should normally be aligned with a
mark on the front of the engine. Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
6. Technician A says that a loose timing belt could lead
to severe valve damage. Technician B says that if
a timing belt is too tight, severe valve damage can
occur. Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
7. Technician A says that the function of a timing belt
cover is to protect the oil seal and belt from debris.
Technician B says that the function of a timing belt
cover is to keep debris off the belt and protect your
hands when working in the engine compartment.
Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
8. Timing gear runout should be measured with a _____.
(A) dial indicator
(B) inside micrometer
(C) outside micrometer
(D) feeler gauge
9. Technician A says that timing gear backlash is the
amount of clearance between the crankshaft snout
and timing gear. Technician B says that timing gear
backlash is an indication of the wear on the timing
gear teeth. Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
10. Technician A says that normally the snout bolt can be
tightened to force the vibration damper into position.
Technician B says that you can hammer on the outer
edge of the vibration damper to force it into place on
the crankshaft. Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.