7. Contamination Control- Filters

What is the most common type of filter on Caterpillar machines?

• Spin-on / Cartridge

• Screens

• Magnets

• Centrifuges

What are the two types of filter media found in spin-on/cartridge filters?

• Fibrose

• Cellulose

• Conventional

• Synthetic

Answer explanation

Cellulose and Synthetic

What type of filter should be used for cleanout when servicing a machine that had a previous failure?

• Standard

• Advanced Efficiency

• Ultra High Efficiency

• WIX

Answer explanation

Ultra High Efficiency- The filter will catch smaller micron particles that may have been missed during the repair.

Which compartments in Caterpillar fluid systems typically use magnets?

• Differentials

• Final drives

• Coolant

• Axles

What rating does Caterpillar use on filters?

• Beta

• Absolute

• Nominal

Answer explanation

Absolute

Filters will catch particles smaller than their micron rating.

• True

• False

What is the micron rating for a breather filter?

• 2 micron

• 4 micron

• 6 micron

• 14 micron

Answer explanation

Breathers installed on Cat machines are 4 micron filters