228 Auto Brakes
4. Before attempting to turn a rotor, visually check it for
______ and ______.
5. As a minimum, rotor thickness should be checked at
______ spots on the rotor.
6. Excessive rotor runout can be checked with a ______.
7. To remove a(n) ______ rotor from the vehicle, the
wheel bearings must be removed.
8. Place the following rotor turning steps in order.
___ (A) Set the feed speed.
___ (B) Install the rotor using the proper adapters.
___ (C) Clean the arbor.
___ (D) Set the rotor cutting depth.
___ (E) Install the silencer band.
___ (F) Start the lathe motor.
___ (G) Determine whether the rotor can be turned.
___ (H) Swirl grind the rotor.
___ (I) Inspect the turned rotor surface.
9. A motor driven grinder must be used to remove
______ from the rotor.
10. A non-directional finish is a series of fine ______
ASE Certification-Type Questions
1 1. All Al l of of t t he he f f ollowing ol lo wi ng g s s tatements ta te me nt s are ar e true, tr ue EXCEPT: EX CE PT :
( (A (A ) disc ) d ) d is c b br br ke ak ak e pad pa d d and an d d rotor ro to r service se rv ic e is is s s im im lar il il ar for f f or
every ev er y kind ki nd o o f f disc di sc b b rake ra ke s s ystem ys te m.
(B) (B ( th ) t ) he most t common d d i is c b br ke ak pr p bl ob le ms are n ise oi
and a d d h ha ha d rd rd p p d ed ed l. al al .
(C) disc brakes commonly produce high pitched
squeals or squeaks.
(D) pulsation is usually caused by rotor problems.
2. Technician A says that observing pad thickness is a
good way to determine pad condition. Technician B
says that a grooved rotor is a sign of wheel bearing
wear. Who is right?
(A) A only.
(B) B only.
(C) Both A & B.
(D) Neither A nor B
3. Pushing the pads away from the rotor makes
_________ removal easier.
(A) pad
(B) caliper
(C) rotor
(D) dust boot
4. Loaded calipers are new calipers with the ________
already installed.
(A) pads
(B) pins
(C) rotor
(D) All of the above.
5. All of the following statements about pushing the
caliper piston into its bore are true, EXCEPT:
(A) before pushing on the piston, loosen the bleeder
(B) push on the piston with a large C-clamp.
(C) place a pan under the caliper to catch brake
(D) tighten the bleeder only after the C-clamp is
6. Do not allow any anti-squeal compound or lubricant
to touch the _________.
(A) pad friction surfaces
(B) pad shoe
(C) rotor
(D) Both A & C.
7. A rotor will not turn freely after the caliper is installed.
Technician A says to drive the vehicle and apply the
brakes a few times to loosen the rotor. Technician B
says to loosen the wheel bearings until the rotor turns
freely. Who is right?
(A) A only.
(B) B only.
(C) Both A & B.
(D) Neither A nor B.
8. To check a rotor for runout, use a ______.
(A) dial indicator
(B) brake micrometer
(C) feeler gauge
(D) Any of the above.
9. Technician A says that all bearing play should be
removed from an integral rotor before runout is
checked. Technician B says that a non-integral rotor
should be bolted to the hub before the runout is
checked. Who is right?
(A) A only.
(B) B only.
(C) Both A & B.
(D) Neither A nor B
10. A brake lathe can be used to remove ______ from the
(A) scoring
(B) bluing
(C) high spots
(D) All of the above.
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