(1) TB 48- Jake Brake

Question 1

The jake brake effect is accomplished by prematurely opening the exhaust valves near the top of the ____ stroke releasing the compression pressure to exhaust.

Answer 1

Compression stroke

Question 2

The engine brake reacts quickly. It will activate or deactivate in less than ___ of a second.

Answer 2

1/4

Question 3

During emergency responses the jake brake should be set for _____ engine retarding.

Answer 3

Max

Question 4

What are the four stated advantages of the jake brake?

Answer 4

1. Increased performance
2. Safety
3. Versatility
4. Cost-effectiveness

Question 5

The Jacobs Engine Brake is a HYDRAULIC engine attachment that, when energized, alters the engine exhaust valve operation which converts the diesel engine into an _____.

Answer 5

Air compressor

Question 6

Jake Brake “CAUTIONS”

DO NOT engage the jake brake during the following:

Answer 6

-wet streets
-during pumping or aerial ops
-when up shifting gears
-when at idle or low engine speed

Question 7

Use of the jake brake on freeway or similar open road should be dictated by:

Answer 7

Traffic Conditions and the Operators good judgement