Suspension

Question 1

What is the purpose of a cushion hitch?

Answer 1

Regulate ride height and act as a cushion for the gooseneck

Question 2

Cushion hitch hydraulic assembly is composed of?

Answer 2

One or two accumulators

Leaf spring connected to leveling valve

Control lever in cab

Variable displacement pump

Load cylinder

Question 3

Articulated haul trucks use what kind of suspension?

Answer 3

Rubber blocks

Question 4

Larger off road haul trucks use what kind of suspension?

Answer 4

Hydro pneumatic

Question 5

What is lockdown?

Answer 5

When the scraper hitch moves down and bottoms out on the tractor bracket

Question 6

How do you purge a accumulator of oxygen?

Answer 6

Fill the nitrogen area with a couple litres of oil. Then force piston up until all air has escaped

Question 7

What does the a frame help locate?

Answer 7

Front to rear axle

Question 8

The pan hard rod end helps locate that way?

Answer 8

Side to side

Question 9

I’m a hydra air system what is the suspension?

Answer 9

Nitrogen