we're gonna take a look at the correct procedure for
removal and then installation of the injector sleeve or injector cup
different manufactures used different names for them in this particular case we're calling
this an injector sleeve
this injector sleeve actually sits into the head boss and that is surrounded by
coolant to
take away some of the heat
of operation of the injector
now there's also a lot of heat right here now this particular
manufacture uses what's called a direct injection
direct
injection injector
so when it's installed in its correct position
in the engine
it actually comes through the sleeve
through the head boss
and then is in
combustion chamber area and on a diesel engine the combustion chamber area where
the clearance volume is made up
by the relief or the bowl mixing bowl area of
the piston.
in automotive applications we tend to have the combustion chamber in the
cylinder head
and sometimes it's part of the makeup of the piston head with the combination
of the cylinder head. So this is installed in the correct position we
need to make sure that we don't allow any combustion gas or compression
pressure
to leak by here
and come out the top
so there is a washer they gets installed in the correct position
and this is a compression washer and it goes on the end of the injector
and then when the injectors sleeve is in the head that we install the two
together
until
it is that it's right position
then we have a lock
that locks the injector down and then there is a dust boot
that goes over top
so when a technician is diagnosing this he may not necessarily disassemble the
running engine
we're looking for anything else or deleting
injector sleeve
picking a week
two ways
compression
pressure and gas leaking by the compression washer
and coming up the top
any other what it can happen is the coolant leaking by the top of the
injector sleeve so we have to put it certain type of see you and i think it's
two sixty two lac tight that actually who watch this
into place in this only read and provides some sealing capacity also it
see interference fit which means
this is larger than the whole in the boss of the head that were putting it
into you
salt the next thing is that we need to take a look at the engine and then see
what we need to do to actually take us apart
so we look on the top of the engine you can see here's our injector sleeves
pressed down
into the respected positions number one and number two need to be replaced
because the end of this has been damaged
and it will not provide app
flat melting steel
with the injector
compression
washer
if we take a look at how it's it's on the inside
this would say flat
on the inside
and then the injector would actually come down like this so we need to have a
nice flat surface here on the inside of this lead to promote the ceiling of the
injector
so these injured damage and we're gonna have to remove them and install brand
new sleeves
so first thing we have to do
take a small amount of
rancor paper towel
and i'm gonna stuff it down inside the whole reason being for that
is when i use my tap
i'm gonna start to cut debris and i don't want it to fall into the engine
this particular case and this kind of put my kapin
ended
use inappropriate too old to drive it
then i'm gonna start to cut some threads
into you
the injector
i'm going off center a little bit but i'm not too worried about it because
we're not really using this again
and normally you would always when you're tapping
is go forward and go facts on that occasion you on this so that i treat
teammates clean thread
in the port
so but i can't afford might
color apparatus is next
chal the injector sleeve as required
so you can see how much of a
chore this could actually be
stealing your
doing it
should in the chassis because now you probably have the cabin that way and so
on so forth
so we've actually got enough material trapped in there now
and there's lots of debris on top of it
so i'm just gonna wind this bought down in the position
and
suck it up
just have to give it to start and that's neat
and we're going to put
a prowler adapter onto it
zimmerman installer colored
and then just unsure
tether and is in the correct position so we don't herder fingers
and we discussed
thusly vodka
and you could see my bold kind a little wacky when i pulled it out you can see
some of the
the seal it was on there from the last install
at this point this leaders no longer serviceable so we can just go in the
garbage
so we want to do an inspection here again clean and the poor
will be a break clearly read
make sure the boren looks good
and then we can even have a quick look down inside
case in order to do is a ridiculously for where to put on the appropriate of
sealant which is two sixty two blocks right by a manufacturer's recommendation
promiscuous reared its relative is a film called on in this provides the
ceiling obvi cooling system
with the interference fit of the sleeve
in the solar had son is gonna put it into position
and then we have a driver
that goes
into this leave
through this leave now the important part is is when this is being done
that the pistons on that particular song that are not work
because it's direct injection this driver is actually going through
thusly
and when it's going through this leave as the pistons in the way because it's
direct injection we could potentially driving this involved
into the top of his team treating the image that's important nature of the
president is down
which it is
so we put it back in the position
prickly
position at the end to the cylinder
so now we got the driver in position and then we're just going to tax it down
into
it's xbox
sell this to all will blossom
which indicates where the
tool
so you can see it slightly below the surface is lots of ceiling around there
and that's going to provide
the ceiling that we need to have for the new u_s_
and then we'll have a lock that holds it down into position
and then our fuel return and supply lines would be installed
now there is also a das boot it goes on the top so when technicians
are checking
for these weekend
what can be done is the das boot can be pulled up and soap and water can be
sprayed on a running engine impression week you will see it bubble
talks one way of diagnosing that the sleeve is damaged
now a quick and easy way to actually remove
washers one sometimes they do come out on the injector
but if it doesn't
in order to get back out
so in order to get those compression washes out if we can choose the cheaper
sponge
we just solution
and then it hit fits directly onto it
so then we can always get them out one thing that happens sometimes in the
trade or even here at the college as when students take these apart
been neglected take them out
sony put the new one back in assuming that we need new ones they stack them if
they stack them
then there's not enough room for the whole dan quayle and we actually
torque it down and crime caper convex depending what side you're looking at
we actually poll that injector sleeve
now making money even surface and we will have no ceiling capacities
make sure it every time the full amount that it is
out of there and then we can do the visual inspection
obviously you can determine do we put in washington in most cases where i was
gonna put new watchers in fact in to promote agood ceo when the injectors are
removed and then replaced