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Heavy Equipment Technician Period 3 Alberta > 190303hB > Flashcards

190303hB Flashcards

1
Q

What should be done before adjusting track tension?

A

Undercarriage must be clean

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2
Q

How is a track machine stopped before checking track tension?

A

Coast to a stop in a forward direction

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3
Q

If you find oil on the track what could be the cause?

A

Leaky pin and bushing SALT
Leaky roller seal
Final drive leak

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4
Q

True or False: Sweating is normal in undercarriage

A

FALSE

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5
Q

What decides the rear of the machine?

Via undercarriage

A

Final drive is always in the rear

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6
Q

What type of operation was happening to cause side wear on undercarriage? “Unusual roller flange wear”

A

Side Hill Work

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7
Q

Track pin and bushing wear can cause a change in what?

A

Track pitch, slack in tracks

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8
Q

What causes excessive wear in pin and bushings?

A

Too tight of a track

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9
Q

Which direction should tracks be installed on a piece of equipment?

A

Dive down, grouser pointing towards front

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10
Q

How is track pin and bushing wear measured?

A

Tighten the tracks, measure across 5 pins
dimension divided by 4 = track pitch
*DO NOT USE THE MASTER

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11
Q

What is an option to tighten the track if you do not want to add or remove grease to the recoil system?

A

Placing a track pin in the sprocket and driving just far enough to get tension

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12
Q

Where do links wear?

A

On the upper or lower side where they contact the idler/rollers

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13
Q

How do you measure wear on a master pin?

A

Go/No-GO gauge

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14
Q

What causes faster wear in pin and bushings?

A

Gritty/sandy work environment, working at high speeds

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15
Q

When inspecting TRACK PADS what is one measurement that should be checked?

A

Grouser bar height or wear compared to specs

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16
Q

What type of work environment causes pre mature wear of grouser bars?

A

Rocky soil

17
Q

What would you check if your idler has excessive un-even wear? (1/16” taper)

A

Track alignment

18
Q

What causes track alignment issues?

A 
Equalizer bar pins and bushing are worn
Idler - can be shimmed improperly then worn
Diagonal bar - pins/bushings are worn
Pivot shaft is wore
Bent side frame
19
Q

What is the best way to check sprocket tooth wear?

A

Go/No-Go gauge

20
Q

What are obvious signs of a very worn sprocket?

A

Teeth are shallow (oblong) and tooth tips are sharp

21
Q

When measuring across multiple (3) teeth on a sprocket, how would you know you have excessive wear?

A

the distance between the teeth decrease

22
Q

How do you check for a bent side frame?

A

Measure between the shaft of the roller on the left track and the shaft of the roller on the right side. Inside to Inside. SHOULD BE PARALELL

23
Q

How can a wish bone alignment be corrected if the bushing is okay?

A

It must be machined

24
Q

How are idlers adjusted for alignment?

A

With shims

25
Q

What are two positions can a bearing block be mounted on an idler?

A

High or Low mount

26
Q

What type of work is a dozzer doing if the idler block is in the high mount position?

A

Pulling work or ripper work

27
Q

If a dozzer is doing mostly pushing work what position should the bearing block be in on an idler?

A

In the low mount position

28
Q

When installing chains what must you be aware of for proper direction of track pads?

A

The bolt pattern allows the pad to go in one direction. Make sure the bolt patter allows the pads to be directed correctly.

29
Q

How are ice lugs installed on a track pad?

A

Welded on

30
Q

Can idlers be resurfaced?

A

Yes

31
Q

What can you not use ultrasound checks on?

A

Grouser height on rebuilt track pads

32
Q

What measurement is important to record when taking an average of measurements?

A

The lowest (worse) measurement to prevent wearing components past rebuild

33
Q

When charging nitrogen what environmental effect should you account for?

A

Temperature

34
Q

When charging a nitrogen recoil system what must be inline with your refill system for safety?

A

Pressure regulator

Heavy Equipment Technician Period 3 Alberta (15 decks)

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