Question

use the last half of chapter 14 (pg. 129 - 138) to help you answer the questions. you may use your notes or your table partners to help you.
part i: service schedules - indicate with a n if the vehicle should be serviced under the normal service interval or an s if the vehicle should be serviced under the severe service interval.

1. vehicle used as a police car
2. vehicle used for long road trips
3. vehicle used for trips under 10 miles
4. vehicle driven in extreme cold conditions
5. vehicle used for towing

part ii: true or false - indicate with a t if the statement is true or an f if the statement is false.

1. synthetic oil can be mixed with conventional oil
2. warranties are not necessarily voided if aftermarket parts are used
3. wheel studs should not be oiled when reinstalling lug nuts
4. tire pressure can increase by 4 to 6 psi if the vehicle has been driven several miles
5. honda/acura transmissions are usually checked with the engine off.

part iii: multiple choice/short answer

1. two technicians are discussing chassis lubrication. technician a states that grease labeled “gc” can be used for chassis lubrication. technician b states that if a grease is labeled “gc” and “lb” it may be used for chassis lubrication. who is correct?

a. technician a only
b. technician b only
c. both technicians
d. neither technician

1. depending on the manufacturer, manual transmissions may use a variety of fluids as lubricants except

a. gear oil (sae 80w - 90)
b. automatic transmission fluid (atf)
c. engine oil (usually sae 5w - 30)
d. dot 5

1. where can you find accurate information on tire inflation specifications for a given vehicle?

a. the tire sidewall
b. from the shop foreman
c. the door jamb tire sticker
d. the veci label under the hood

1. diesel exhaust fluid (def) is used to reduce ________ emissions.

Explanation:

Part I:

Step1: Police car usage

Police cars are often used in severe - duty conditions like frequent short - trips, idling, etc. So, it should be serviced under severe service interval (S).

Step2: Long road trips

Long road trips are normal driving conditions. So, it should be serviced under normal service interval (N).

Step3: Short trips

Short trips (under 10 miles) are considered severe driving conditions as the engine may not reach optimal operating temperature. So, it should be serviced under severe service interval (S).

Step4: Extreme cold conditions

Extreme cold conditions are severe driving conditions. So, it should be serviced under severe service interval (S).

Part II:

Step1: Synthetic and conventional oil

Synthetic oil can be mixed with conventional oil, but it may affect performance. However, the statement is generally considered true (T).

Step2: Aftermarket parts and warranties

Warranties are not necessarily voided if aftermarket parts are used as long as the parts meet manufacturer standards. So, the statement is true (T).

Step3: Wheel studs and oiling

Wheel studs should not be oiled when reinstalling lug nuts as it can cause over - tightening. So, the statement is false (F).

Step4: Tire pressure increase

Tire pressure can increase by 4 - 6 psi after driving several miles due to heat. So, the statement is true (T).

Step5: Honda/Acura transmissions

Honda/Acura transmissions are usually checked with the engine running. So, the statement is false (F).

Part III:

Step1: Chassis lubrication

Grease labeled "GC" and "LB" can be used for chassis lubrication. So, both technicians are correct (c).

Step2: Manual transmission lubricants

Engine oil is not typically used in manual transmissions. Manual transmissions usually use gear oil or other specific lubricants. So, the answer is c.

Step3: Tire inflation information

The most accurate place to find tire inflation specifications for a given vehicle is the door jamb tire sticker. So, the answer is c.

Step4: Diesel exhaust fluid

Diesel exhaust fluid (DEF) is used to reduce nitrogen oxide (NOx) emissions. So, the answer is nitrogen oxide (NOx).

Answer:

Part I:

1. S
2. N
3. S
4. S

Part II:

1. T
2. T
3. F
4. T
5. F

Part III:

1. c. Both technicians
2. c. Engine oil (usually SAE 5W - 30)
3. c. The door jamb tire sticker
4. nitrogen oxide (NOx)