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Automotive > Final Drive Part 3 > Flashcards

Final Drive Part 3 Flashcards

1
Q

What are the three types of axels?

A
  • Semi-floating
  • Three-quarter floating
  • Full-floating
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2
Q

What are the three types of rear axel bearings and retainers?

A
  • Straight roller type
  • Tapered roller type
  • Ball bearing type
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3
Q

What are the three functions of the semi-floating axel?

A
  • Transmits torque
  • Supports vehicle weight
  • Retains the wheel
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4
Q

What are the two functions of the three-quarter floating axel?

A
  • Transmits torque

- Retains the wheel

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5
Q

What is the function if the full-floating axel?

A

Transmits torque

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6
Q

What load does a ball axel bearing carry?

A

Carries radial and axial thrust loads

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7
Q

What load does a straight-roller axel bearing carry?

A

Carries only radial load

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8
Q

What load does a tapered-roller axel bearing carry?

A

Carries radial and axial load (in one direction only)

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9
Q

What is used to lock the axel to the differential side gear in a semi-floating axel retainer?

A

C-Clip

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10
Q

Why should you be careful not to use excess gasket sealer?

A

It can contaminate the parts

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11
Q

What is the function of the axel retaining plate?

A

It keeps the bearing/axel assembly in the axel housing

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12
Q

What is used to modify the friction to prevent clutch chatter on turns?

A

An LSD additive (for lubricant)

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13
Q

What are these: SAE 75W-90, 80W-90, 80W, GL-5

A

Differential lubricants

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14
Q

How is lubrication delivered to the final drive assembly

A

It relies on splash lubrication

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15
Q

Why should you pay attention to the OEM specified gaskets

A

Because the thickness may affect clearances in some equipment

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16
Q

How much form-in-place gaskets (sealer) should be used

A

Usually 1/8” bead or smaller

17
Q

Which type of seals do not seal pressure?

A

Differential seals

18
Q

What is most affected by vehicle modifications?

A

The final drive (may cause early final drive failure)

19
Q

What is rear axel windup?

A

During acceleration, the pinion gear climbs the ring gear tilting the axel housing upwards. This can cause delay to acceleration on high performance vehicles.

20
Q

What is used to correct rear axel windup?

A

Traction bars can be installed

21
Q

What issue may occur due to a modified suspension?

A

Front pinion bearing may starve for lubrication

22
Q

When would you replace the front u-joint by a double-cardan joint?
Why?

A
  • When you have a modified suspension

- To reduce vibration

23
Q

What are shims used for?

A

To tilt the rear axel in a leaf spring suspension

24
Q

How do you compensate for a different rear axel ratio?

A
  • One or more vehicle modules must be recalibrated

- On older vehicles. speedometer gear is replaced or an electronic module is installed to correct the speed reading

Automotive (6 decks)

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