Crankshaft Bearing Roll-in

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

Channel: Fanshawe Motive Power

Views: 720,112

Keywords: Fanshawe College, Truck Repair, Diesel Engine, Transportation Technology, Engine Rebuild

Id: jHeO1h3U4GE

Length: 15min 22sec (922 seconds)

Published: Mon Dec 10 2012