Dozer Maintenance Under carriage.

 undercarriage

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bolog for caterpillar and today we

are going to talk about undercarriage

maintenance

undercarriage typically represents an

average of 50 of a machine's parts and

service costs so it's extremely

important to select the right

undercarriage from the start and to

properly maintain it to select the right

undercarriage you need to ask yourself

some key questions how long will i own

the machine how many hours a week will i

use the machine

what are my typical ground and soil

conditions what are my impact conditions

what are my attachments on the machines

and what are the grades and slopes that

are typical on my job sites so

caterpillar knows that one undercarriage

does not meet all customers needs and

underfoot conditions therefore

caterpillar has multiple offerings of

undercarriage designed to fit your

machine and underfoot conditions all

come as complete systems or as

components for example for dozers we

have the newly launched catabrasion

undercarriage for high abrasion low to

moderate impact conditions we also have

general duty for low to moderate

applications or for when the machine

ownership period is not that long and

for high impact applications we have

hdxl which is built to withstand the

high level of impact when the rocks get

big or you're in forestry

since undercarriage is a big investment

i highly recommend you consult with your

cat dealer they have the tools and the

deep expertise to help you select the

undercarriage that best matches your

needs now let's talk about maintenance

maintenance is the best way to lower

your owning and operating costs get the

longest life out of your undercarriage

and prevent failures

this machine is a D6 one of the main

things is a daily walk around you want

to do and check on most of your

components to make sure that everything

is in proper working order and

everything there's no abnormal wear

first things you want to check on is the

outside of your tracks and make sure

that none of your bolts are missing or

coming loose from your track links to

your shoes

and this all looks pretty good

next thing you want to look at is you

want to check out your link assembly and

your bushings and you want to make sure

that you don't have any abnormal

scalloping

or any pitting on your bushings with

showing forward or reverse wear

any stepping then we look at your

sprockets and here in your sprocket

pocket we're looking for mushrooming of

the iron which would show high speed

forward or high speed reverse

you would get back here over to your

idlers

and we check to see

for any raging or any abnormal

unshimming

everything looks good

then we check your rollers

we make sure all your rollers

are tight in there now

make sure everything's free of debris

and ready to roll

lastly we'll check on your carrier

roller make sure that any of this debris

sitting on top of the frame here doesn't

add up and stop and clog up the roller

from from spinning if the roller can't

spin the tracks will

roll over the top of it and wear a flat

spot on top of your carrier that will

cause a lot of accelerated wear and lose

a lot of life on your undercarriage

another thing you really want to think

about is track tension

you want to be able to see two dips

between your sprocket and your idler

here you can run a string from the top

to the bottom there's about an inch of

string between the grouser bar and the

string and that'll show correct tighten

another is your chrome right here

there's a max stretch on that

and if you exceed the max stretch all

your irons wear out

for your operators we want to make sure

that we're not running this machine in

high speed forward or reverse it causes

premature wear to your bushings and your

sprockets if your tracks are taut

your wear will accelerate it's very

important to keep a little bit of slack

in your tracks to allow for movement

between your iron so you don't

accelerate the wear too quick one of the

most important things about your dozer's

undercarriage life is keeping the actual

undercarriage clean

by relieving all the packing from inside

the links and the debris off of the

frame allows for your components to move

freely and it allows for the components

to last longer as well well thanks for

joining us and don't forget you get the

extra bottom line protection with cva

plans which offer maintenance cost per

hour guarantees contact your dealer with

questions and remember that proper

maintenance will help you lower

operating costs and get the most life

out of your undercarriage