190302 A (A+B)

Question 1

Are skid steer machines only equipped with wheel assemblies in a fixed straight ahead position?

Answer 1

No, there are also tracked assemblies.

Question 2

What is the difference between a depth and a surface filter?

Answer 2

A Depth filter is paper spin on. Surface types are a fine mesh.

Question 3

What is the final drive assembly comprised of on a skid steer?

Answer 3

Chain drive sprocket design.

Question 4

What is the most common cause of problems with hydraulic systems on a skid steer.

Answer 4

Contaminated oil.

Question 5

When working on a skid steer, what is a safety measure that must be followed?

Answer 5

Anytime the cab is lifted, place security arms under the arms.

Question 6

What are 4 types of steering used on Off-Road Equipment?

Answer 6

Rear Wheel
Four Wheel Crab
Four Wheel Co-Ordinated
Skid Steer

Question 7

What is the smallest size of contamination you can see?

Answer 7

40 Microns

Question 8

What is the size of the contamination that gets filtered by a hydraulic oil filter?

Answer 8

1 Micron

Question 9

What is one difference between regular hydraulic oil and fire resistant oil?

Answer 9

Fire resistant oil holds contamination in suspension, requiring magnetic filtration.

Question 10

What type of steering system allows for maximum floatation of the tires?

Answer 10

Crab Steering

Question 11

On Co-Ordinated or Circle Steering what is a benefit while turning?

Answer 11

The tires form a concentric circle and follow each other.

Question 12

What could cause slow turning radius cycle times?

Answer 12

Low Engine RPM, Other implements being used at the same time,

Question 13

What is a follower valve for?

Answer 13

This is used to cause the steering wheel input stop turning of the wheels once the desired amount of radius has been achieved.

Question 14

What does a pressure control valve do in the full time hydraulic steering system?

Answer 14

Limits system pressure, regulates pressure in a secondary system, causes functions to go on a certain sequence.

Question 15

What is a common use for a flow divider in a steering circuit?

Answer 15

To direct pump pressure to the shuttle valve, blocking the emergency pump pressure off.

Question 16

What is another name for a steering directional control valve? Why?

Answer 16

Reversing valve, because it allows oil through to act upon a dual acting cylinder but also return oil from the depressurized side. This valve will also do the opposite.

Question 17

What are double acting cylinders?

Answer 17

A Cylinder that can have oil act on either end of it.

Question 18

What engages a neutralizer valve?

Answer 18

The stop screw with a rounded head.

Question 19

What turns a greater degrees on a motor grader, the front wheels or articulation?

Answer 19

Front wheels turn more.

Question 20

When turning a wheel loader, do the wheels track inside, outside or on the same path?

Answer 20

The same track.

Question 21

When attaching the tie rod end to the arm, what is one important step that must be followed?

Answer 21

There should be no gap showing at the end of the threads on the tie rod end.

Question 22

How are joysticks connected to the swash plates on a hydrostatic steer machine?

Answer 22

Mechanical, Air, Hydraulic or Electronic.

Question 23

What is a very important component of the hydraulic system of a skid steer system due to compact design?

Answer 23

The oil cooler.

Question 24

What kind of pump is the hydraulic charge pump on a hydrostatic steer system?

Answer 24

Gear pump.

Question 25

What kind of filtration does a hydraulic reservoir screen filter out?

Answer 25

100 Micron