the test of the inspection ever going to do here today is actually doing a
bearing role in the in the morning to continue on to do for a coral clearance
with plastic gauge to establish what
warning clearance we have between the crankshaft journal and the bearings that
we are installing
uh... if we take a look at the crankshaft itself
so we take a look at the creature after we have been being bearing caps the
crate shafts installed and we have are
crankshaft riot
bearing journals expose
uh... we can also see on the right to know that we have an whale
supply passage
allows engine oil pressure from the engine oil pump
three internal galleries
and regulators
and uh... pressure relief valves
to supply the right amount uh... oil
to lift
and support the crank shaft in operation
so if we take a look at
the crate shaft itself we conceded some slight discoloration here
they don't we rotated around we can still see the same thing on jason rod
journals
discrete shaft is a forged crankshaft
and it's fully in the heart and
an induction ke treated
this is the induction heat treating that happens around the journal area to
support the impact loading and the heat loading
that roger also subjected to jury operation in the engine
lot of technicians mistake this for writing feet
but if we had a writing heat problem
from the prior assembly
prior to doing the repair work
we would actually see discoloration
on the journal
as well as the case in on the crank itself
we're going to start by rotating the crank shaft
down
and out of our way
so we can access this being buried
i pick justice bearing in particular after the crankshaft install
to want to check the bearing the fee
then re-install the very visual bearing role and
and they will continue on with measurement to check again the vertical
oil clearance
so if i take the cap
and loosen the cap
on bowls
remove the cap screws
and use the cap screws
factually help
removed the berry
cap itself
so now we've removed the cap and you can see the new bearing surface
concede a cap itself
and in the fasteners
so if we take a look at the journal surface now
conceded we have a very clean surfaces crankshaft was already polish prior to
his installing it
what we want to take a look at now though is where the
bodom bearing is which is normally one more upside down looking
under the engine in the chassis
this would be the topside bearing which would happen if whale hole in it
to supply of oil pressure on the lightly loaded side
sony engines upside down
the top side as a lightly loaded side where the will pressure would come in
field the clearance area and lift and support the crank shaft
so that we're going to do with your on the eve engine stand or
underneath the engine working underneath the chassis
we have to moved the bearing out of its position
and you can see on the other side
but the bearing is starting to come out of its position
we're gonna use a he'll bark
actually assist in removing the berry
different manufacturers of engine equipment
um... will provide different tools to actually help assist yet the bearing l
some of them
actually use appeared
that sits in the royal hole
and then he can rotate around as we move the crankshaft to roll the bearing out
of its respective position
in the saddle
here on this one in particular
we're gonna take the heel bar
with light pressure
and
far vote
the troop where we can lift the bearing out
now you can see on this buried here that we have the people will really area
where the supply of holes are
this manufacture uses a couple different walls because it despairing works for
her
different engine configurations
where we may have a whale supply able here
or maybe an oil supply all here
a lot of manufactures of bottom end bearings now have taken l two guesswork
of which way the bearing can actually go away
one of the things that establishes
the position of where the bearing is going to be n is detain
picked a new year
case or the taking on the bay area
is what helps align the bearing into its install position
what actually holds the bearing in position
is the clipping for civic cap
pushing on the opera bearing in the lower bearing
putting it into its position to actually hold it there and provide enough radial
pressure
through the courting of the cap
the hold it in its position
it's a misunderstanding from technicians that
this stain is what's actually holding the bearing their
dick cheney is only there for the installation purpose
fifty bearing into its correct position prior to it being toward into its
possession
some is going to take a little break clean i'm gonna rotate the crank shaft
and as discussed pre-op all of the white move that was
used during the first installation you can see that we end up with a very clean
jenny craig surface
we didn't call it a discreet here in the lab
because there was a very small
uh... abrasions on the crane chap but you can see now that we have a very
smooth
clean surface
for reinstallation of the very
so we take a look at the bearing and expiry new com
is what we call it
friction tight vary so that the face of the barrington
frictional olds
past i have a film of oil on it
they recommend that you do not touch the bearing surface
simply for the fact
people whales from your hands
can actually leave
fingerprints in the brain which creates localized hot spotting
and disperses oil because of the acids in your fingers
so when you
clean these bearings with break clean
and wipe them clean with a
clean cloth
we should have no more fingerprints on there
if your fingers are oil
and your reinstalling these parents that's okay because it will fill cn
um... your fingerprints on your hand and reduces the amount of acids that can
actually touch
increase problems with the bearing surface
we call this bearing a splits up s with shell buried
half of it
goes on the bottom of the other half goes on the cap
it's a full well relief so it allows extra volume of oil to sit in here
for varying engine low
and rpm
so we go to install the bearing
who want to take a look at the positions that pertain
which needs to be in the position
the engine block
in this position here you conceded are split
machines surface we have the blocking here at the group that skype
that fits directly to the taint
this position
underneath the journal
so we want to start with the install going in this direction
walling batain into its correct position and then centering what's the crushed
all its claim that as we get to that point i think the case or going to take
the bearing the outlet installed the bearing into its position
and a lot of the times we can't just push the bearing
into position by hand
and assisting by rotating the creature
once we get to a point that it's tight i'm going to bring the loyal or backup
in front of the party line of the bay area
manufactures that provide engine drooling
will provide dow payments for rolling the bearing out
and rolling the bearing back in
there are hardened machine
pm pickles in there and if it's precisely into the will supply all
and that has a step that hopes to the side of the bearing so that when we were
located we can drive it into position
they're very expensive tool
hard material
so we run the risk of
fracturing that hard material in its sole than that
parts kit
fired into the inside of the crank shaft
enduring in hearing install in jassi makes a very hard to service at a remove
that if that pin gets locked in there
so we use is uh...
he simple
cotter pin
very soft malibu material
and we can drop it in a global will pick the right size we drop it into the hole
we can rotate the crank shaft
against the bearing
and now used to crank shaft with the pin
to push the bearing
their own into its position
so now you can see that we have that
burying it moving down into position and a biscuit use a scourge i've written as
i start moving this i see the taint
going into its brought relief on the party line
it looks like it's over to this and slightly so i'm going to do is move it
with my screwdriver
to position it
so that as i roll it down
it's it's in the correct position
now on the part of the essence or that the carter pin meets the party line
one-eyed back this up
by canals deaths
the carter piano thing
after the bearing has been rolled into its position either on the bench cheaper
on this stand or from underneath in the chassis
we still have to center what's called
the bearing crisis of material that actually states above the partying like
omg if we take a look at the cap
we can see that i can move this bearing out a position creating this
to stick up at the party line
this is what we call crutch
decided snell positive decided his negative i don't feel it with my finger
so i'm going to do is i will be use might psalms and i'm gonna center the
crush till i feel the same amount on either side
and when i feel a bit on the side
and a bit on the side that i know that the buried is positioned correctly
so we take a look at it back in the block
we were all this bearing down into position
corrected
by the tane so we know that it sitting in its right spot
but the problem is is the crush is too high on this side
compared to this site
fall i'm going to do at this point is i'm just going to tap the buried
and feel by hand with my finger
can you can hear it
but i have positive crash there
and none of the other side
so i'm just gonna move the bearing against
in the release of the measurement process it's more albany experience
process that we want to make sure
we have equal crushed on either side and i can feel that with both
fingernails
that i have crush a four-part rouge into that
so now if that's sticking up
and we put the cap on and the one of the cap is sticking up would we put the two
together in torque it it pushes the bearing
into its respective position
in the bore
for the main bearing spacehab getting ready now to install the bearing witness
put some fresh engine oil onto and again like i said before you can't touch
bearings as long as your hands are protected
sort of a tina's coat of oil and so we got installed a cap wanna make sure the
heroes are going in the right direction this manufactures prescribe the two
goals to this side of the engine which is our campsite
so the urls for point distraction and we have number two main cap
an unwritten rule that's on the kids
to lock
so if you have no other designation of understanding how the bearings fully
with the cap
it's always lock
tonight taking the bearing cap
second position i'm gonna start a couple fasteners for died
this could be used the
by the end of my hammer and tap the bearing cap
down into position
once we get to this position that the captain sitting in its correct position
that we're just going to use
even raksha
rundown
cap to make sure
we are completely
seeded
it's always a good idea prior to doing a torque to make sure that the crankshaft
herds
and as you can see the crankshaft moves freely
after installing the cap
do you have to go ahead and tortilla
to manufacture specifications
and then check the operation
after
the tor ki