have you ever wondered what powers one
of these agricultural giants and so
you're in luck we happen to have one
with an engine failure over the next
four weeks we're going to be looking at
this thing from the inside out
as you can see we've got the engine out
we've been busy decided to spare you the
details it's pretty self-explanatory
take votes out to the thing falls apart
now let's get inside and have some fun
all right so we've got the engine inside
here it's disassembled the next step is
gonna be to clean and inspect all the
parts find out what needs to be replaced
what we're gonna be using to clean these
parts of brake wash and a spray gun will
also be is this parts cleaner it's
basically mineral spirits it recycles it
through pumps it on my parts to clean
them I've got some timing gears here
engine Oh pickup tube in the engine oil
pump put in the noose clean these parts
up disassemble this pump check it for
wear
we're gonna inspect these pump gears for
where there's a little bit of wear but
they look pretty good we can reuse these
we're also gonna inspect these bushings
what you're looking for is scoring this
bearing is good we can reuse it we need
to pull the piston out silver remove the
cap the spring and the spool this is the
old pressure relief valve it regulates
the engine oil pressure and your
lubrication system what we're looking
for here is some scoring on the surface
of this spool this does have some
scoring so we will replace this this
engine oil pump is a gear tight pump to
get the main housing the inlet the
outlet as these gears are driven that
drawing one side expel out the other
side lubricate the engine so we've got
all of our parts cleaned inspected and
ready to go back together the students
and only problem we're just going to
make sure and lubricate all of our
bearings
we've got earns an old pump assembled
now let's go look at our camshaft
so if it came setup on the buffer on the
cam stands we're gonna give it a good
cleaning inspect it
now we've got the cam good and clean
it's time to inspect the cam journals
what we're looking for is grooves in the
journals and then the cam lobes I don't
see any uneven wear on the cam lobes and
the journals are getting smooth what I
have here is a dial indicator I'm going
to use it to check the run out of this
cam that's gonna tell us if this cam is
true or safe like a banana
I'm doing now is I'm setting this up on
the cam this is magnetic I'm gonna sit
it on the center cam Journal we're gonna
tighten all these clamps so it's set
tight we're gonna zero it rotate this
cam 360 degrees and let us know in
thousands how much run out we have okay
I'm recording to the length have
different tolerances I have two checking
this cam out it sits at about 6,000 run
out which is a miracle same as how our
camera guy Justin Newman knocked it over
this is the injector cam basically the
same as the valvetrain cam only
difference is you only have one lobe per
injector these big diesel engines have
replaceable cylinder liners so in the
event of a failure they can be replaced
individually your loaders have build up
with carving around the top of the
cylinder liner it's important to clean
that off be gentle when cleaning the
outside of this liner there's an oxide
coating that prevents cavitation
cavitation occurs when vapor bubbles get
trapped in between the cylinder liner
and the bar this little spot of
cavitation doesn't call for a
replacement of the cylinder liner this
can be treated with coolant additive
when you're inspecting the inside of
this liner you're gonna look for uneven
wear there hot spots this liner looks
good we should be able to hone this
liner if the reason that we're honing
this cylinder liner it said that the new
rings will seek and create a better seal
want to use mineral spirits or solvent
to own these with Nikita a good home job
is low speed and keep it moving we're
going to take this nasty grimy stuff
outside we're gonna blast it off with
our pressure washer
we've got our parts cleaned inspected
we're gonna send the rods out in the
cylinder block out to get recondition
next week we're going to tackle the head
and remember for your parts and service
needs hit us up at Newman Tractor com
makes it extremely flammable let's see
