5. Out of Service Criteria (pt 2)

Question 1

What are the main headings (pt 1)

Answer 1

I.	Engine System
II.	Electrical System
III.	Braking System
IV.	Aerial Device System
V.	Transmission

Question 2

What are the main headings (pt 2)

Answer 2

VI. Crew Cab Area
VII. Tires and wheels
VIII. Chassis, Axles, Steering & Suspension system, driveline
IX. Fire pump

Question 3

V. Transmission

Answer 3

1. Automatic transmission overheats at any range
2. Class 3 transmission leak
3. Transmission will not go into lockup for fire pump ops
4. “do not shift” light on
5. Coolant in transmission

Question 4

VI. Crew Cab Area

Answer 4

1. Broken cab mounts
2. Cut or broken seatbelts (either individual seat out of service, or if front truck out of service)
3. Cracked or broken windshield obstructions (line of vision) or mirrors
4. Inoperable windshield wipers
5. Broken or missing door latches

Question 5

VII. Tires and wheels

Answer 5

1. Tread depth less than 4/32, 2/32
2. Cut in side wall that penetrate to the threads
3. Bulges greater than 3/8”
4. Wheels: Bent, broken, cracked
5. Missing lug nuts

Question 6

VIII. Axles, Chassis, Driveline, Steering, and Suspension system

Answer 6

1. Cracks
2. Steering gear linkage/box (bolts loose/missing; cracks)
3. Free play >10% (2” on 20” steering wheel)
4. Class 3 leaks in power steering system
5. Cracked or broken springs or spring mounts

Question 7

IX. Fire pump

Answer 7

1. Pump will not engage
2. Throttle or the Pressure control system is not operational
3. Pump transmission components that have class 3 leak
4. Water tank has major leak

Question 8

What are these OOS criteria based on?

Answer 8

1. Code of Federal Regulations
2. Adopted by Mesa Fire
3. Provided in the AZ state fire school: fire pumps: Theory, operation, and maintenance