MEOC Maintenance & Inspection 2

Question 1

When inspecting the undercarriage of a mini excavator, which component should be checked for proper tension?

Accepted Answer

Track chain/belt

Answer

Track tension must be checked regularly because improper tension causes accelerated wear, derailment, or drivetrain damage.

Question 2

A mechanic notices the swing bearing on a mini excavator has excessive play. What is the safest immediate action?

Accepted Answer

Tag the machine out of service and notify a supervisor

Answer

Excessive swing bearing play is a structural safety hazard that requires the machine to be taken out of service until repaired.

Question 3

Which fluid level should be checked BEFORE starting a mini excavator each day?

Accepted Answer

Engine oil, hydraulic fluid, and coolant

Answer

Pre-shift inspections require checking engine oil, hydraulic fluid, and coolant to prevent equipment damage during operation.

Question 4

What does a milky or foamy appearance in the hydraulic reservoir indicate?

Accepted Answer

Water contamination in the hydraulic fluid

Answer

A milky or foamy appearance indicates water has entered the hydraulic system, which degrades performance and causes corrosion.

Question 5

How often should the engine air filter on a mini excavator typically be inspected in dusty conditions?

Accepted Answer

Daily or as indicated by the restriction indicator

Answer

In dusty environments, air filters can clog rapidly and should be checked daily or whenever the restriction indicator signals a clogged filter.

(MEOC) Mini Excavator Operator Certification Practice Test