Out of Service Criteria

Question 1

Engine system OOS criteria (6)

Answer 1

1. Major coolant leak
2. Engine unable to maintain proper temperature
3. Major oil leak
4. Low engine pressure
5. Contaminated coolant or oil
6. Fuel leak

Question 2

Transmission OOS criteria (5)

Answer 2

1. Shift linkages are defective
2. Automatic transmission overheats in any range
3. Transmission has major leak
4. Transmission will not go into lockup for fire pump operations
5. Transmission fluid contaminated with coolant

Question 3

Electrical system OOS criteria (4)

Answer 3

1. Alternator not maintaining voltage (not charging)
2. Battery gassing excessively
3. Headlights out (both)
4. More than three emergency lights out

Question 4

Braking system OOS criteria (7)

Answer 4

1. Any audible air leak with park brake released
2. Any audible air leak with park brake released and service brake applied
3. Vehicle pulling when brake applied
4. Compressor will not build air pressure
5. Parking brake will not hold truck
6. Shoes, drums, pads worn beyond manufacturer’s minimum specifications
7. Shoes or pads contaminated with oil

Question 5

Crew cab area OOS criteria (4)

Answer 5

1. Broken cab mounts
2. Cut or broken seat belts
3. Cracked or broken windshield obstructions (line of vision)
4. Inoperable windshield wipers

Question 6

Chassis, axles, steering and suspension, drive line, wheels and tires OOS criteria (9)

Answer 6

1. Tires cut to cords
2. Tires with tread depth less than 4/32 on steer axle
3. Tires with tread depth less than 2/32 on drive axle
4. Cracked or broken springs
5. Cracked or broken spring hangers
6. Loose steering system components
7. Cracked rims
8. Missing lug nuts
9. Major leaks on power steering system

Question 7

Fire pump OOS criteria (6)

Answer 7

1. Pump test results fall below 90% of original rating of the fire pump-in accordance to NFPA 1911 standards
2. Pump will not engage manually and/or pneumatically/electrically
3. Pressure control system inoperable
4. Pump transmission components have major leak
5. Pump throttle/pressure controls inoperable
6. Water tank had major leak

Question 8

Aerial OOS criteria (8)

Answer 8

1. Power take-off will not engage
2. Stabilizer system inoperable
3. Aerial device defective
4. Hydraulic system defective
5. Cables sheaves defective
6. Cables frayed
7. Aerial device structurally deformed or damaged
8. Torque box/turntable fasteners broken or missing