Out of Service Criteria

Question 1

The engine system has 6 criteria which will put it automatically out of service. They are…?

Answer 1

1. major coolant leak
2. engine unable to maintain proper temperature (i.e. overheating)
3. major oil leak
4. low engine oil pressure
5. contaminated oil or coolant (oil in coolant, fuel in oil, coolant in oil, coolant in transmission fluid)
6. fuel leak

Question 2

The transmission has 5 criteria which will put it automatically out of service. They are…?

Answer 2

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

Question 3

The electrical system has 4 criteria which will put it automatically out of service. They are…?

Answer 3

1. alternator not maintaining voltage (not charging)
2. battery gassing excessively
3. headlights out
4. more than 3 emergency lights out

Question 4

The braking system has 7 criteria which will put it automatically out of service. They are…?

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 brakes are applied
4. compressor will not build pressure
5. parking brake will not hold truck
6. shoes, drums, pads worn beyond manufacturer’s minimum specifications
7. shoes or pads with oil contamination

Question 5

The crew cab has 4 criteria which will put it automatically out of service. They are…?

Answer 5

1. broken cab mounts
2. cut or broken seat belts
3. cracked or broken windshield obstructions (line of sight)
4. inoperable windshield wipers

Question 6

As a group, the chassis, axles, steering/suspension systems, driveline, wheels and tires have 9 criteria which will put the truck automatically out of service. They are…?

Answer 6

1. tires cut to cords
2. tires with tread depth less than 4/32 on steering 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

The fire pump has 6 criteria which will put it automatically out of service. They are…?

Answer 7

1. pump tests fall below 90% of the original rating of the fire pump, in accordance with NFPA 1911 standards
2. pump will not engage manually and/or air/electronically
3. pressure control system is inoperable
4. pump transmission systems has major leak
5. pump panel throttle/pressure control is inoperable
6. water tank has major leak

Question 8

For aerial devices, there are 8 criteria which will put it automatically out of service. They are…?

Answer 8

1. power take off will not engage
2. stabilizer system inoperable
3. aerial device defective
4. hydraulic system defective
5. cable sheaves defective
6. cables frayed
7. aerial device structurally deformed or damaged
8. torque box/turntable fasteners broken or missing