190303jb Flashcards

1
Q

Housing joint leaks are generally contributed to faulty gaskets.

A

false;

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2
Q

As a maintenance concern, on which shafts should the end play be checked?

A

input shaft and c) output shaf

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3
Q

When performing a road test, it was discovered that there was a noise that only
occurred while cornering. The probable cause is:

A

worn carrier thrust washers

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4
Q

What check must be done before disassembling the carrier assembly?

A

backlash

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5
Q

Why must caution be used when removing the case half bolts?

A

If the carrier is equipped with a no-spin traction enhancing device, the case halves
will be spring-loaded and longer bolts will have to be used to relieve the spring
tension.

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6
Q

Which components should always be changed in sets?

A

bevel gear and pinion gear.

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7
Q

When the operator activates the driver controlled carrier lock, the operator is
mechanically locking:

A

one axle shaft to the carrier case

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8
Q

Pinion bearing preload is established with:

A

shims between the pinion bearings.

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9
Q

When checking pinion bearing preload using a cord and a spring scale, record the reading required to start the assembly rolling.

A

false;

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10
Q

The specific distance that the pinion and bevel gear are designed to run from each
other is called:

A

nominal distance.

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11
Q

Side bearing preload and backlash adjustment is done with:

A

threaded bearing adjusters.

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12
Q

When adjusting the backlash between the pinion and the bevel gear, if more backlash
is required:

A

adjust the flanged half adjuster counter-clockwise and the plain half adjuster
clockwise the same amount

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13
Q

. If the tooth contact pattern shows excessive heel:

A

move the ring gear toward the pinion.

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14
Q

When reusing a gear set, the shim pack thickness that was removed during disassembly can be discarded. T/F

A

False, the shim pack should be reused.

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15
Q

Where should a 0 etch marked pinion be positioned?

A

At the nominal dimension

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16
Q

After the backlash is properly set, the bearing cap fasteners can be torqued to specifications. What should be done after this?

A

Recheck the backlash; if correct, lock the adjusting rings in place.

17
Q

2 basic ways of lubricating carrier components are:

A

Splash pressure and combination splash and pressure systems.

18
Q

Which component splashes oil to the wheel bearings and drive pinion?

A

The bevel gear splashes oil around in the carrier housing troughs and passages for lubrication in hard to lube areas.

19
Q

Pressure lubrication pump is driven at what speed?

A

This pump is driven in an over drive to ensure adequate lubrication for the bearings and gears.

20
Q

What are some common housing joints failures?

A

O ring seals and RTV sealants that are used in the carrier housings due to loose bolts, stressing, high torsional loadings and imperfections in the mating surfaces.

21
Q

Bevel gear and pinions must be replaced individually?

True or false

A

False

22
Q

How is pinion bearing preload established ?

A

Shims

23
Q

When measuring pinions bearing preload, how should you read the spring scale?

A

Read the spring scale torque while rolling rather than torque required to start rolling