welcome and thanks for interesting in my bolog.where i can write details for quarry and construction machinery. thats is related
to dozer 155AKomatsu products today we're going to
cover how to properly conduct a pre
operation inspection on the d 155 a dozer now the reason we do the
inspection is to just take a quick look
at the machine and inspect it for any
damage excessive wear or any leaks
getting the habit of doing this
inspection will go a long way towards
maximizing the production and the
longevity of the machine everything we
cover today will also be included in the
operation and maintenance manual inside
the cab so with that let's go ahead and
get started
okay so as we approach the machine we
have a couple checks we can do right
away the first one would be to look up
in the cab and just ensure that there's
nobody inside move our way down the
lights into the grill and just make sure
there's no obvious signs of damage from
there we'll go ahead and start at our
work equipment work our way around the
machine with the blade what we're
looking to check for is all of our welds
cutting edges and corner bits just to
make sure there's no signs of excessive
wear and also ensuring that the bolts
are in place from here we can go ahead
and swing around to the backside of the
blade.
what we're doing here is checking the
backside of the blade looking at all of
our welds and also our mounting points
for the arms and the cylinders want to
make sure that the pins and bolts are in
place and everything's receiving the
proper amount of lubrication also a
really good opportunity to take a look
under the front side of the machine and
just make sure you don't see any signs
of leaks from here we can go ahead and
look at our hydraulic piping and our
hydraulic lines so we'll just continue
our way across the push arm until we get
to the final mounting spot if everything
looks ok there we can take a step back
now and do our undercarriage inspection
what we want to do is just visually take
a look at the idler the shoes the
carrier rollers the final drive and
sprocket work our way down to the track
guides the K bogies in the pivot shaft
if everything looks okay here go ahead
and take a look at our sight glass and
make sure we have adequate levels of
hydraulic fluid and we can continue to
work our way around the machine go ahead
and taking a look at all of our mounting
points it won't move up to the rear view
camera and just work our way down so
looking at the backside of the cab and
all of our lights from here we can move
to the Ripper assembly itself we're
going to be checking all the mounting
points for the arms and the cylinders
making sure that all the bolts and pins
are in place and everything is receiving
the proper amount of lubrication you can
actually do that check on both sides of
the Ripper assembly on our way over to
the other side we can get down and take
a look at the shank in the Ripper tooth
make sure that there's no signs of
excessive wear it's also a really good
opportunity to take a look underneath
the machine and see if there's any leaks
as we work our way back towards the
machine make sure we're checking the
hydraulic lines and also check in the
Ripper light it's also location of the
sediment drain for the filled tank in
the main fuel cutoff switch alright so
moving around on the left side of the
machine will be again checking our
mounting points and go ahead and open
the door and take a look at our
batteries and our breakers just making
sure we don't see any obvious signs of
corrosion or any kind of damage this is
also the location for the main battery
disconnect switch and you can also check
your windshield wiper
it from there we'll go ahead and do the
same visual inspection of the
undercarriage that we performed on the
other side of the machine one thing to
note though is that keeping the
undercarriage clean can help with the
inspection process and can also help
with the longevity of the undercarriage
move along to the push arms and
cylinders checking all the mounting
points perform the same visual
inspection that we did on the other side
of the machine everything looks good
here that would conclude the ground
level checks. we can move on to the
second level checks so after completing
the ground level inspection the next
step would be to access the machine to
do our second level checks before we do
that we're going to inspect our access
points to make sure they're okay and
make sure that we're always using proper
mounting and dismounting techniques
whenever we access the machine so once
you've accessed the machine we can go
ahead and open the doors and do our
visual inspection of the engine
compartment so what we're doing here is
just scanning across to just check
everything make sure that there aren't
any signs of leaks that all the
connections look good and that there's
no debris if everything looks good here
can move down and check our engine
coolant make sure we have adequate fluid
levels so as we finish up here and move
towards the cab it's a good idea to
inspect the cab itself just take a look
at the windows the windshield wipers and
your lights just make sure nothing jumps
out at you moving up to the top of the
machine got the location the fuel fill
spot these machines utilize ultra low
sulfur diesel you also have your
hydraulic and transmission fluid fuel
spots when inspect your breather vents
make sure that they're in place and
finally you have the transmission fluid
check spot
so once we're finished on this side if
everything checks out we can move to the
other side of the machine and finish our
inspection okay so now that we've
accessed the left side of the machine
once we get the doors open we can
continue with our visual inspection in
the engine compartment like we did on
the other side all we're really looking
for it's just to make sure that the
connections are okay there's no leaks
and there's no debris from here we can
move to our air filter and just take a
look at our latches make sure they're in
place Guus up the location of your air
restriction gauge from here we can move
to the engine oil check spot and our
dampener fluid check spot the last thing
we'll do before we close the doors just
take a quick look at our fuel pre-filter
and just make sure that there's no
contamination from here we'll go ahead
and work our way towards the cat so now
we finish the engine inspection we can
go ahead and move to our final
compartment which is the location of the
DEF tank which you can tell by the blue
cap you also can check the depth level
in the sight tube that's how the
location of the DEF tank breather make
sure that's in place and also the
location of the exterior cab filter
finally before we enter the cab we just
want to take a quick look at our wipers
our lights and our windows and just make
sure that there's no damage everything
looks okay that would conclude the pre
operation inspection .
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