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electrical and steering > off road attachments A-B > Flashcards

off road attachments A-B Flashcards

1
Q

what does FOPS stand for

A

Falling object protection system

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2
Q

what does ROPS stand for

A

roll over protection system

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3
Q

what is the purpose of FOPS

A

to protect the operator from falling debris or objects

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4
Q

what is the purpose of a ROPS

A

to protect the operator in the event of a roll over situation

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5
Q

ROPS will not protect the operator unless

A

the operator is wearing their seat belt

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6
Q

what are the two organizations used to set the requirements of ROPS and FOPS

A

occupational health and safety

society of automotive engineers

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7
Q

what must be considered when mounting accessories to a ROPS or FOPS

A

they must not alter the structural integrity of the ROPS or FOPS

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8
Q

what must be considered when repairing a damaged ROPS or FOPS

A

consultation with manufacturer or a professional engineer to ensure repairs will not affect structural soundness

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9
Q

when removing a ROPS or FOPS that make up a cab what must be considered and what precautions must be taken

A

proper rigging . failure to control the cab during removal could result in damage to cab assembly . ground area under cab must be clear of personal

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10
Q

what is the purpose of spending significant money on a fire suppression system

A

because machine repairs and down time are very costly . larger the machine the more expensive the repairs and down time due to fire damage

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11
Q

what are five components that make up the fire suppression system

A

actuators . sensors . lines and nozzles . storage cylinders . gas pressured cylinders

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12
Q

what are the two common fire suppression chemicals

A

monoammonium phosphate dry chemical . good for A-B-C fires

aqueous film forming foam . good for A-B fires

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13
Q

how is a manual fire suppression system activated

A

by a push button or switch in the cab . or on either side of the machine at ground level by ground personal

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14
Q

what is the purpose of a hand held fire extinguisher on a machine with auto fire suppression

A

to add fire suppressant to any spot that might require more and to control flair ups after the fire has been put out

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15
Q

what are the two types of sensors used on mobile equipment fire suppression systems

A

linear detection wire . spot sensors

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16
Q

linear detection wires operate by

A

creating a electrical short by deforming when exposed to high heat

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17
Q

spot sensors operate by

A

detecting heat build up in specific locations around the machine

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18
Q

what are three points of interest pertaining to fire suppression nozzles

A

slotted end for dispersal
protective cap to keep out dirt and debris
orientation to provide the best coverage

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19
Q

what are the activation steps of a fire suppression system

A

alarm sounds - engine shut down - initiate hydraulic tank venting - automatically actuate the fire suppressant

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20
Q

what are three factors that could result in personal injury from fire suppression systems

A

chemical agents - dispersant gases - system pressure

21
Q

what are the two types of dispersant gasses used in fire suppression

A

nitrogen

carbon dioxide

22
Q

when disabling fire suppression system for maintenance

A

place seals on actuator pins - remove fire suppression ECM battery - remove fuse / breaker suppling power to the system

23
Q

what are four checks to be completed on a fire suppression service

A

check gas and chemical cylinders ( every six months ) blasting caps ( replace every five years ) hoses ( check for oil damage rubbing ect ) fluff dry chemical ( every service )

24
Q

why is backblading considered poor practice with dozer blades

A

because it prematurely wears cutting edges and dozer blades

25
Q

what is the purpose of the dozer C frame

A

mount the dozer blade and transfers impact forces through the side frames

26
Q

what are the two positions a dozer blade is commonly used in

A

carry and brake out

27
Q

what is the purpose of a cutting edge and corner bit

A

protects the dozer blade - penetrates the ground - provides a changeable wear surface

28
Q

what is a ripper

A

a large shank with a tooth to penetrate the ground and brake up hard ground

29
Q

what are the three main components used to move soil by a scraper

A

bowl -ejector - apron - cutting edges

30
Q

what is the purpose of a elevator on a scraper

A

to allow the scraper to load and unload itself evenly

31
Q

what are the purpose of the corner cutting edges or end bits on a motor grader

A

to protect the moldboard from impact damage in rocky conditions

32
Q

what is another name for the blade on a grade

A

moldboard

33
Q

what is the difference between a ripper shank and a scarifier shank

A

a ripper shank penetrates the ground deeply to break up hard ground . scarifier shanks rough up the top surface of the ground or ice

34
Q

what are the common attachments used on a grader for snow

A

snow wing - v plow - straight blade

35
Q

what is the purpose of bolting cutting edges to the side of a bucket

A

to protect the bucket from damage and wear during digging operations

36
Q

what is the purpose of shanks on a bucket

A

to provide structural strength for the tooth points during digging

37
Q

what type of terrane would a bucket require wide point tooth

A

when digging in soft ground and to minimise spillage

38
Q

what are some precautions to take when installing cutting edges

A

wear PPE - never use your fingers to align bolt holes - cutting edges are heavy use co workers or crane for help

39
Q

why is metal to metal contact important when installing cutting edges

A

so the mounting fasteners will not loosen over time during operation

40
Q

when would bolt on cutting edges be used vs weld on

A

when ground penetration is less of a problem

41
Q

what might be some causes for ripper tooth breakage

A

tip to long for conditions - shank protector missing - wrong shank angle

42
Q

how are bolts tightened on cutting edges

A

from the center out with proper torque spec

43
Q

what is the purpose of hitting the heads of the bolts with a sledge

A

to seat the bolts into the reses and then re torque

44
Q

what are the two types of ripper designs

A

hinge type - ( has a constantly changing angle in the ground ) parallelogram type ( provides a constant ripper angle )

45
Q

what is hard surfacing used for

A

its is crossed hatched welding that allows dirt to stick to it protecting the ground engagement tool from wear

46
Q

what are the two types of breaks used on winches on mobile equipment

A

drum and band - multi disc clutch pack

47
Q

what is the normal condition of the brake on many winches

A

normally applied or on - hydraulic release and spring applied

48
Q

what is sizing

A

sizing a wire is wrapping a fine metal wire around the wire to be cut so when the wire is cut the loose ends do not unravel

electrical and steering (8 decks)

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