Track Machine Undercarriage

The type of steering used on crawler machines that works by using a hydraulic steering drive motors is the

hydrostatic steering system.

differential steering system.

multi-disc steering system.

mechanical steering system.

Correct! Wrong!

What are two types of brake steering systems are used for crawler tractors?

band and multi-disc.

pinion and bevel.

driven and drive.

planetary and jaw.

Correct! Wrong!

One advantage of wet clutches is that

they are larger and operate faster.

they operate at higher temperatures.

they require less adjustment.

they run cooler.

Correct! Wrong!

Which is the most common pump-motor combination used on crawler machines with hydrostatic drive?

fixed displacement pump driving a fixed displacement motor.

variable displacement pump driving a fixed displacement motor.

fixed displacement pump driving a variable displacement motor.

variable displacement pump driving a variable displacement motor.

Correct! Wrong!

To make a right turn with a crawler tractor using differential steering moving forward, the steering handle should be

pushed forward so that the steering motor turns clockwise.

pulled back so that the steering motor turns clockwise.

pushed forward so that the steering motor turns counterclockwise.

pulled back so that the steering motor turns counterclockwise.

Correct! Wrong!

Most crawlers with wet clutches share a common oil supply with the

torque converter and final drive.

bevel gear compartment and final drive.

torque converter, transmission and bevel gear compartment.

torque converter, transmission and final drive compartment.

Correct! Wrong!

In a hydro-static pump or motor the swash plate rotates and the pistons are stationary.

True

False

Correct! Wrong!

Testing the operation of hydraulic steering controls must be done with

feeler gauges and specifications.

pressure gauges.

spring scales and a torque wrench.

a special tool only available to the dealer.

Correct! Wrong!

When overhauling a multi-disc clutch assembly, the service life left in the discs can be determined by measuring the clutch pack stacked height.

True

False

Correct! Wrong!

Low oil level in the clutch indicates a leak in the clutch system.

True

False

Correct! Wrong!

The assembly that supports a tracked machine is called

a flotation unit.

a final drive unit.

an undercarriage.

a car-body.

Correct! Wrong!

The difference between the undercarriage of a tracked loader and a dozer is that

the dozer undercarriage is designed so that each track frame can move up and down independently from the other.

the loader undercarriage is designed so that each track frame can move up and down independently from the other.

loader undercarriage units do not have track idlers.

the loader undercarriage uses drive tumblers while the dozer uses sprockets.

Correct! Wrong!

Mechanic A says that track frames may be made of box or channel steel. Mechanic B says that some track frames are kept in alignment with diagonal braces. Who is right?

Mechanic A is right.

Mechanic B is right.

both Mechanic A and B are right.

neither Mechanic A or B are right.

Correct! Wrong!

Mechanic A says that the hydraulic track adjuster uses hydraulic fluid from the transmission for operation. Mechanic B says that front idlers are attached directly to the final drive unit. Who is right?

Mechanic A is right.

Mechanic B is right.

both Mechanic A and Mechanic B are right.

neither Mechanic A or Mechanic B are right.

Correct! Wrong!

Drive discs and bolt on segments are preferred over cast spoke sprockets because

last longer, are easier to replace and weigh less.

are easier and less expensive to replace when worn.

have smaller teeth which can be replaced with the track installed.

are stronger and weigh less.

Correct! Wrong!

If a track chain uses two conical washers installed back-to-back in the link counter-bore they are called sealed chain.

True

False

Correct! Wrong!

The best shoe for use in soft ground areas where traction is important would be

flat shoes.

standard grouser.

open shoes.

triple grouser.

Correct! Wrong!

To control the movement of the major bogies, the suspension system uses

inner and outer collars.

rubber pads.

lubricated pins.

an equalizer bar.

Correct! Wrong!

Rubber pads are used in the bogie suspension equalizer bar to

cushion the spherical bearings.

maintain a straight ahead operation.

control oscillation.

keep the correct distance between the collars and bushings.

Correct! Wrong!

One result of a loose track is

the horsepower output is reduced.

the track could jump off.

the idlers will not operate properly.

the pins will come out.

Correct! Wrong!

With a hydraulic track adjuster, to tighten the track you would

add grease.

remove grease.

tighten the adjuster nut.

bleed off the gas charge.

Correct! Wrong!

If the track is worn, you can remove it without venting the adjuster as long as the adjuster is extended to its maximum reach.

True

False

Correct! Wrong!

Mechanic A says that pin and bushing life can be extended by turning the pins and bushings. Mechanic B says that once an idler roller is worn it must be replaced and sent for rebuild. Who is right?

Mechanic A is right.

Mechanic B is right.

both Mechanic A and Mechanic B are right.

neither Mechanic A or Mechanic B are right.

Correct! Wrong!

Mechanic A says that master pins must be removed using a hydraulic press. Mechanic B says that if you can''t elevate the machine, you cannot remove the track. Who is right?

Mechanic A is right.

Mechanic B is right.

Both Mechanic A and Mechanic B are right.

Neither Mechanic A or Mechanic B are right.

Correct! Wrong!

Lubricated tracks must have the pins and bushings turned at regular intervals.

True

False

Correct! Wrong!

Track Machine Undercarriage

The type of steering used on crawler machines that works by using a hydraulic steering drive motors is the

What are two types of brake steering systems are used for crawler tractors?

One advantage of wet clutches is that

Which is the most common pump-motor combination used on crawler machines with hydrostatic drive?

To make a right turn with a crawler tractor using differential steering moving forward, the steering handle should be

Most crawlers with wet clutches share a common oil supply with the

In a hydro-static pump or motor the swash plate rotates and the pistons are stationary.

Testing the operation of hydraulic steering controls must be done with

When overhauling a multi-disc clutch assembly, the service life left in the discs can be determined by measuring the clutch pack stacked height.

Low oil level in the clutch indicates a leak in the clutch system.

The assembly that supports a tracked machine is called

The difference between the undercarriage of a tracked loader and a dozer is that

Mechanic A says that track frames may be made of box or channel steel. Mechanic B says that some track frames are kept in alignment with diagonal braces. Who is right?

Mechanic A says that the hydraulic track adjuster uses hydraulic fluid from the transmission for operation. Mechanic B says that front idlers are attached directly to the final drive unit. Who is right?

Drive discs and bolt on segments are preferred over cast spoke sprockets because

If a track chain uses two conical washers installed back-to-back in the link counter-bore they are called sealed chain.

The best shoe for use in soft ground areas where traction is important would be

To control the movement of the major bogies, the suspension system uses

Rubber pads are used in the bogie suspension equalizer bar to

One result of a loose track is

With a hydraulic track adjuster, to tighten the track you would

If the track is worn, you can remove it without venting the adjuster as long as the adjuster is extended to its maximum reach.

Mechanic A says that pin and bushing life can be extended by turning the pins and bushings. Mechanic B says that once an idler roller is worn it must be replaced and sent for rebuild. Who is right?

Mechanic A says that master pins must be removed using a hydraulic press. Mechanic B says that if you can''t elevate the machine, you cannot remove the track. Who is right?

Lubricated tracks must have the pins and bushings turned at regular intervals.

Success!

Heavy-Duty Mechanic - Trucks & Equipment