310T Preventive Maintenance and Inspection 2

Question 1

What tool is used to measure brake lining thickness on a drum brake system during PM?

Accepted Answer

Dial caliper or purpose-built lining gauge

Answer

A dial caliper or lining gauge accurately measures the remaining friction material thickness to determine if linings are above the minimum serviceable limit.

Question 2

Which components are inspected to confirm the air dryer is functioning correctly during PM?

Accepted Answer

Purge valve operation and desiccant cartridge condition

Answer

A properly functioning air dryer expels moisture through the purge valve; checking purge valve operation and the desiccant cartridge confirms it is removing water from the air system.

Question 3

What does it indicate when a brake chamber push rod stroke exceeds the maximum allowable limit?

Accepted Answer

The brakes are under-adjusted or excessively worn, reducing braking effectiveness

Answer

Excess push rod stroke means the brakes require more travel to apply, indicating under-adjustment or worn linings that must be corrected immediately.

Question 4

What type of lubricant is typically specified for steering knuckle king pin bushings during chassis lubrication?

Accepted Answer

NLGI No. 2 multi-purpose lithium complex grease

Answer

NLGI No. 2 lithium complex grease provides the correct consistency and extreme-pressure protection required for high-load suspension and steering pivot points.

Question 5

During a belt inspection, which condition requires immediate replacement of a serpentine or V-belt?

Accepted Answer

Cracks, fraying, glazing, or missing chunks of material

Answer

Physical damage such as cracks, fraying, glazing, or missing chunks indicates the belt is near failure and could break without warning.

(310t) Truck and Coach Technician Certification Practice Test

(310t) Truck and Coach Technician Certification Practice Test

310T Preventive Maintenance and Inspection 2