Chapter 6 Homework Driveshafts Flashcards
When discussing drive shaft design,
Technician A says that the shorter the shaft is, the less likely it is to become out of balance.
Technician B says that rubber inserts may be inserted into a tube-in-tube shaft to dampen the vibrations of the shaft.
Who is correct?
Both A and B
When discussing the Hotchkiss design of drive shaft,
Technician A says that it consists of a small-diameter solid shaft enclosed in a larger tube.
Technician B says that it has a Universal joint attached to each end of the shaft.
Who is correct?
B only
When discussing the phasing of Universal joints,
Technician A says that this allows the speed changes at one U-joint to be canceled by the other U-joint.
Technician B says that this means that both U-joints are positioned at opposite angles to each other.
Who is correct?
A only
When discussing the different types of Universal joints,
Technician A says that the most commonly used type uses bushings instead of needle bearings inside the U-joint caps.
Technician B says that the double Cardan type consists of two U-joints connected by a centering yoke.
Who is correct?
B only
When discussing slip joints,
Technician A says that they allow the drive shaft to change its effective length as the suspension goes through jounce and rebound.
Technician B says that they are normally found at both ends of a Hotchkiss-style drive shaft.
Who is correct?
A only
When discussing the different types of drive shafts that have been used to reduce vibrations,
Technician A says that the flexible rope design is the most commonly used.
Technician B says that the tube-in-tube design is not fitted with Universal joints.
Who is correct?
Neither A nor B
When discussing Universal joint speed fluctuations,
Technician A says that Universal joint speed fluctuations can be canceled if the driven yoke has the same plane of rotation as the driving yoke.
Technician B says that Universal joint speed fluctuations can be canceled by putting the joints in-phase.
Who is correct?
Both A and B
When discussing slip joints,
Technician A says that the yoke normally has external splines.
Technician B says that the slip yoke is normally held in place on the transmission’s output shaft by a snap ring.
Who is correct?
Neither A nor B
When discussing the cause of drive shaft vibration,
Technician A says that excessive differences in joint operating angles can cause an increase in drive shaft vibration.
Technician B says that a two-piece drive shaft that is assembled out of phase can cause an increase in shaft vibration.
Who is correct?
Both A and B
While discussing Universal joints,
Technician A says the joint consists of two Y-shaped yokes plus a cross-shaped unit called the cross or spider.
Technician B says the single Cardan Universal joint assembly has four machined trunnions equally spaced around the center of the axis.
Who is correct?
Both A and B
