JACOBS ENGINE BRAKE

Question 1

WHAT TYPE OF ATTACHMENT IS THE JACOBS ENGINE BRAKE

Answer 1

HYDRAULIC

Question 2

WHEN THE ENGINE EXHAUST VALVES OPERATION IS ALTERED IT CONVERTS THE DIESEL ENGINE INTO AN___

Answer 2

AIR COMPRESSOR

Question 3

JAKE BRAKE USES THE ENERGY OF THE ENGINE __ STROKE TO PROVIDE VEHICLE RETARDATION

Answer 3

COMRESSION

Question 4

JAKE BRAKE CONVERTS THE ENGINE TO AN ENERGY- ABSORBING DEVICE TO REDUCE__

Answer 4

VEHICLE SPEED

Question 5

JAKE BRAKE IS ACCOMPLISHED BY A __CIRCUIT THAT OPENS THE __ VALVES NEAR THE END OF THE COMPRESSION STROKE

Answer 5

HYDRAULIC

EXHUAST

Question 6

THE JAKE BRAKE PROVIDES MAX RETARDING POWER AT __ THEREFORE, GEAR SELCTION IS IMPORTANT

Answer 6

RATED SPEED

Question 7

TRUE OR FALSE:

THE JAKE BRAKE IS AN EFFECTIVE TOOL THAT CAN REDUCE BRAKE WEAR IF USED PROPERLY

Answer 7

TRUE

Question 8

THE JAKE BRAKE CONSISTS OF THE FOLLOWING

Answer 8

1. A THREE POSITION SELECTOR SWITCH
2. AN ON/OFF SWITCH
3. THROTTLE SENSOR

Question 9

THE JAKE BRAKE IS USES ARE?

Answer 9

DESCENDING GRADES
DRIVING IN CITY TRAFFIC
WHEN APPROACHING STOP LIGHTS
WHENEVER VEHICLE RETARDING IS REQUIRED

Question 10

IS THERE A TIME LIMIT WHEN USING THE JAKE BRAKE?

Answer 10

NO

Question 11

JAKE BRAKE ACTIVATES IN LESS THAN___

Answer 11

1/4 OF A SECOND

Question 12

SHOULD THE ENGINE BE FAIRLY WARM BEFORE ENGAGING THE JAKE

Answer 12

YES

Question 13

IS THE ENGINE PREHEATER WATER TEMPERATURE SUFFICIENT IF ENGINE IS NOT WARM

Answer 13

YES

Question 14

WHAT ARE THE DIFFERENT POSITIONS OF THE JAKE BRAKE

Answer 14

LOW
MEDIUM
HIGH

Question 15

WHAT DOES THE LOW POSION ACTIVATE

Answer 15

2 CYLINDERS FOR MEDIUM ENGINE RETARDING

Question 16

WHAT DOES THE MEDIUM POSITION ACTIVATE

Answer 16

4 CYLINDERS FOR MODERATE ENGINE RETARDING

Question 17

WHAT DOES THE HIGH POSITION ACTIVATE

Answer 17

6 CYLINDERS FOR MAXIMUM ENGINE RETRARDING

Question 18

DO YOU ENGAGE THE JAKE BRAKE ON WET STREETS?

Answer 18

NO

Question 19

IF THE JAKE BRAKE IS ACTIVATED ON WET ROADS THE ADDITIONAL BRAKING EFFORT ON THE __COULD CAUSE AN UNCONTROLLABLE SKID

Answer 19

(DRIVE WHEELS) DUALS

Question 20

DURING AERIAL OPERATIONS CAN YOU ENGAGE THE JAKE

Answer 20

NO

Question 21

ENGAGING THE JAKE DURING AERIAL OPERATION CAN CAUSE

Answer 21

UNDESIRABLE RETARDATION

ENGINE AND COMPONENT DAMAGE

ENGINE STALLING

Question 22

BETWEEN DIESEL ENGINES AND GAS ENGINES WHICH HAS SUBSTANTIALLY LESS RETARDING EFFECT

Answer 22

DIESEL ENGINES(LACK OF RESTRICTION IN THE DIESEL INTAKE MANIFOLD)

Question 23

GAS ENGINES HAVE A ____ IN THE CARBURETOR WHICH CREATES A VACUUM AND SUBSEQUENT ENGINE BRAKING

Answer 23

BUTTERFLY VALVE