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BRAKE SYSTEMS > AIR BRAKES > Flashcards

AIR BRAKES Flashcards

1
Q

BRAKING SYSTEM IS EQUIPPED WITH A DUAL CIRCUIT AIR BRAKE _ AND _ SYSTEM

A

PRIMARY

SECONDARY

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2
Q

THE SPRING BRAKE IS FOR WHICH AXEL?

A

REAR

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3
Q

WHAT YEARS HAD ANTILOCK BRAKING SYSTEMS (ABS) AND THE AUXILIARY FRONT AXLE PARKING BRAKE

A

2000-2016

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4
Q

WHEN GOING DOWNHILL OR HEAVY BRAKING ALWAYS RELY ON THE BRAKING EFFECT OF WHAT 4 THINGS

A

ENGINE
ENGINE BRAKE
EXHAUST BRAKE
RETARDER

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5
Q

IF SERVICE BRAKES ALONE ARE USED TO CONTROL VEHICLE SPEED EXCESS HEA MAY BE DEVELOPED CAUSING WHAT?

A

BRAKE FADE

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6
Q

IF SERVICE BRAKES ARE REQUIRED, APPLY THE BRAKES IN SHORT DURATIONS OF__

A

5 TO 10 SECONDS

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7
Q

THE BRAKE LINING MATERIAL USED PROVIDES THE BEST BALANCE OF STOPPING DISTANCE, GRADE HOLDING CAPACITY AND ___

A

LINING LIFE

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8
Q

LTI- WHEN APPLYING THE BRAKES IT IS RECOMMENDED THAT A __ CONSTANT PRESSURE BE APPLIED TO THE BRAKE PEDAL

A

FIRM

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9
Q

LTI-WHAT MAY DEPLETE THE BRAKE SYSTEMS AIR RESERVOIR SUPPY?

A

PUMPING THE BRAKES

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10
Q

THE QUICK BUILDUP (NFPA RECOMMENDATION) ALLOWS THE VEHICLE TO BE DRIVEN EVEN THOUGH THE FRONT BRAKE SECTION MAY NOT HAVE SUFFICIENT AIR PRESSURE. TRUE OR FALSE

A

TRUE

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11
Q

SEPARATE AIR RESERVOIRS SUPPLY AIR TO BOTH___ CIRCUITS

A

FRONT AND REAR

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12
Q

SAFE OPERATION IS BETWEEN _ AND _ PSI

A

90-120

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13
Q

WHAT SUPPLIES AIR TO THE FRONT AXLE?

A

SECONDARY SYSTEM

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14
Q

WHAT SYSTEM SUPPLIES AIR TO THE REAR AXLE

A

PRIMARY SYSTEM

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15
Q

WHEN PRESSURE DROPS BELOW APPROXIMATELY __PSI(LTI) AND __ PSI (PIERCE) A WARNING BUZZER AND LIGHT WILL COME ON

A

65

60

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16
Q

AIR GAUGE FOR THE LTI IS LOCATED ON WHAT SIDE OF THE DASH?

A

RIGHT

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17
Q

THE PRIMARY GAUGE HAS A __ NEEDLE AND SECONDARY GAUGE___ NEEDLE

A

WHITE

RED

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18
Q

QUICK BUILDUP ALLOWS PRESSURE TO BE BUILD UP IN WHICH AIR TANK FIRST TO ENABLE RELEASE OF PARKING BRAKES

A

REAR BRAKE TANKS

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19
Q

IN AN EMERGENCY SITUATION OPERATOR DISCRETION MUST BE USED TO USE THE APPARATUS WHEN THERE IS LESS THAN__ PSI AIR PRESSURE IN BOTH BRAKE CIRCUITS

A

90

20
Q

USE EXTREME CAUTION WHEN OPERATING LESS THAN __PSI

A

60

21
Q

___ AUTOMATICALLY APPLIES AND RELEASES THE BRAKES DURING LOW TRACTION OR PANIC BRAKE APPLICATIONS TO PREVENT WHEEL LOCK UP

A

ANTILOCK BRAKE SYSTEM

22
Q

ABS IMPROVES BOTH__AND___

A

BRAKING EFFICIENCY AND STEERING CONTROL

23
Q

IS THERE AN ON AND OFF SWITCH FOR THE ABS

A

NO

24
Q

ABS IS INTEGRAL TO WHAT SYSTEM AND CAN NOT BE OVERRIDDEN OR TURNED OFF

A

AIR BRAKE SYSTEM

25
Q

WHAT DECREASES THE EFFICIENCY OF THE ABS?

A

RAPID PUMPING OF THE BRAKES

26
Q

WHEN THE ABS APPLIES THE TELMA RETARDER IS AUTOMATICALLY___

A

DEACTIVATED

27
Q

SPRING BRAKES ARE APPLIED AND RELEASED BY THE OPERATION OF WHAT COLOR PARKING BRAKE VALVE?

A

YELLOW

28
Q

WHERE IS THE YELLOW PARKING BRAKE VALVE LOCATED?

A

ON THE ENGINE DOGHOUSE INSTRUMENTAL PANEL

29
Q

PUSHING THE YELLOW VALVE __ WILL RELEASE THE SPRING BRAKES

A

IN

30
Q

PULLING THE YELLOW VALVE KNOB ___WILL APPLY THE SPRING BRAKES

A

OUT

31
Q

THE PARKING BRAKE CIRCUIT INTENDED TO THE HOLD VEHICLE IN A PARKED POSITION AND SHOULD__ BE USED FOR NORMAL DRIVING

A

NEVER

32
Q

IF AIR PRESSURE IS REDUCED TO APPROXIMATELY__PSI IN BOTH SYSTEMS THE SPRING BRAKE VALVE WILL AUTOMATICALLY APPLY

A

40

33
Q

WHEN PARKING THE APPARATUS WHETHER ON LEVEL TERRAIN OR A GRADE, ALWAYS DO WHAT?

A

CHOCK THE WHEELS

DEPARTMENT POLICY WHEN ON SCENE

34
Q

MOISTURE IS NORMAL EVEN IF EQUIPPED WITH AN AIR DRYER TRUE OR FALSE

A

TRUE

35
Q

WHAT REMOVES MOISTURE AND CONTAMINANTS FROM PRESSURIZED AIR, WHICH COMES FROM THE COMPRESSOR BEFORE IT REACHES AIR RESERVOIRS

A

AIR DRYER

36
Q

MOISTURE COLLECTED ON THE SURFACE OF DESICCANT PELLETS IS DISCHARGED OUT THE BOTTOM OF THE AIR DRYER EACH TIME THE __ UNLOADS

A

GOVERNER

37
Q

THE AIR DRYER IS REPLACED EVERY__ YEAR AND FOR THE PIERCE __

A

OTHER

2-3 YEARS

38
Q

WHAT USES AIR BRAKE SYSTEM PSI TO KEEP THE FRONT BRAKES APPLIED

A

AUXILLIARY FRONT WHEEL LOCK

39
Q

FRONT WHEEL LOCK IS USED TO AUGMENT WHICH BRAKES IN THE EVENT THE REAR PARKING BRAKES CANNOT HOLD THE APPARATUS ON A STEEP INCLINE

A

REAR SPRING BRAKES

40
Q

WHAT MAY CAUSE THE AUXILIARY FRONT WHEEL LOCKS TO FAIL

A

AIR LEAK

41
Q

THE AUXILIARY WHEEL LOCK SHOULD BE USED ONLY WITH THE ENGINE__

A

RUNNING

42
Q

THE AUXILIARY WHEEL LOCK ACCORDING TO THE FEDERAL MOTOR VEHICLE SAFETY STANDARDS(FMVSS) IS A ___ BRAKE ONLY AND SHOULD BE USED IN CONJUNCTION WITH THE ___ WHEN PARKING THE VEHICLE

A

SUPPLEMENTAL

YELLOW PARKING BRAKE VALVE

43
Q

TO APPLY THE AUXILIARY FRONT WHEEL LOCK WHAT MUST BE APPLIED FIRST

A

SPRING BRAKES

44
Q

WHEN THE SPRING BRAKES ARE RELEASED BY PUSHIN__ THE YELLOW BRAKE KNOB THE AUXILIARY BRAKE KNOB WILL__AND THE AUXILIARY BRAKES WILL AUTOMATICALLY RELEASE

A

IN

POP OUT

45
Q

DISC BRAKE CALIPERS DO NOT USE__ BECAUSE IT WILL NOT PROVIDE ADEQUATE LUBRICATION

A

LITHIUM GREASE

46
Q

S&M LUBE BRALE CALIPERS WHEN?

A

ANNUAL AND BRAKE REPLACEMENT

BRAKE SYSTEMS (3 decks)

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