I had no idea what that metal bit was, but this video cleared that right up. One of these bearings wore down a groove in the main bearing cap and then dislodged to the point it seized my engine. I'm stubborn AF, and I like to fix things so I took the whole engine apart to find that. Daily driver, oil level was good, recently changed...
Didn't really understand what Flying Miata was talking about in the description for their clutch switch override until just now. Thank you for your service!
I am rebuilding my a20a3 honda engine and have gotten to the thrust bearings, not sure what they were used for, but now i know. The book says and I quote "thrust washer thickness is fixed and must not be changed either by grinding or shimming. Thrust washers are installed with grooved sides outward" so the groves face outwards from the bearing housing, example @ 4:50. Thanks for the video eric!
I am having low oil pressure light trouble, manual transmission, I deleted the dampener, I can make the light go out, at 50, by depressing the clutch a little, thanks so much I will test it, using your method.
Great stuff, I am sat in a garage waiting for them to sort my car and thanks to your video I understand exactly what the problem is and the scale of the job. Thanks for your video.
Appreciate this: I had my engine rebuilt recently and one of things they did was add upgraded LS1 thrust bearings. Blew two pistons, two rods and cracked crankshaft. I assume that might be why the crank borked along with the rod bearings.
Hi Eric, I'm a big fan of your vids. Helped me out a few times. Just thought id let you and others know that it does matter which way the thrust bearings go in they have a lead/tin/copper sometimes called "white metal" over layer that needs to be in contact with the side that rotates and most are just metal on the other side. If put in the other way round they wont last too long.
I must say that after watching nearly all of your videos you are a really good teacher, thanks, your videos helped me swap out my engine in my 94 buick regal
thanks for the lesson Eric. I am currently doing my first rebuild on a B16A and always wondered what these bearings did. I decided to go with ACL bearings and hope everything fits in place.
Those bearings also provide an intermediary surface for the crank to spin freely against while supporting it so there isn't wear between the crank and the actual block.
No crank no start on a manual transmission, where you're forced to press the clutch for start, then just bypass the switch on the clutch pedal, it's only two wires.. If it cranks over then there's your problem, a binding crank. However, I've personally never encountered this problem before, not saying it can't happen I've just never seen it.
Thanks for this, i was going over spare engine in my shed, taking off the flywheel i noticed the crank moving back and forwards, hence googling "crankshaft end play" brought me here. So had like 1/4 of an inch play. On removing the sump i found a pair of mangled thrust bearings in the bottom of the engine and some nasty grind makes on the crankshaft, so safe to say thats focked. :D
Really helpful man thanks a lot. I'm in a battle with a dealership over a clicking noise and the movement you described and needed all the help I could get.
just today i put back on the pistons and oil pan on my 1987 lancia thema 2.0 turbo, i didn't remove the crankshaft, tomorrow i'll check for any movement of the flywheel .. thanks eric ;)
Good Video. I heard you mention slow starts, my girlfriends impreza, when we got it, I noticed it cranked really slow but never had a problem starting. Now I know to check this when I do the clutch, thanks.
like the video Eric my question is what if your thrust washers are in the oil pan and did I lose oil or oil pressure to that area. Worried that area didn't get enough oil where the rod bearings might be ruined. Tks for your time and keep the video's coming.
I know you probably forgot, but the thrust washers don't rotate. One of the halves carry a locking mechanism. The washers are more characteristic of shims than bearings.
@binnsh 99% of cars out there have a clutch switch that will not allow the starter to engage until the clutch is pushed down, so unless that switch has been bypassed it's not going to start until you press the pedal.
My question, because I can't seem to find the answer anywhere, is which direction do the thrust bearings go? Grooves in so that they touch the block? Or out so they touch the crank? At 4:50 you show a one piece bearing thrust washer and the grooves are out so they would touch the crank. I'm just curious because I can't seem to find an answer and there were no guides with the thrust washers I bought.
@binnsh you should start it with clutch pedal pushed down because it it easier for a starter to turn the motor when it's disconnected from the gearbox. Especially in cold winters.
Hi Eric, Awesome Video. I'm rebuilding the Engine for my Toyota Camry. Bought new Crankshaft but my question is do I buy Rod, Main & Thrust bearing at Standard Size +00 or should I get them +10 (0.25mm Over) Thank you
great video. I really like the videos that you show us real world diagnosis situations especially when we actually get to see the problem itself in the video and hear or see the problem in addition to the great tips and tricks used to FIND the problem and NOT throw parts at it. Your info is accurate and helpful. thanks.
I would imagine that the extra slop in the rotating assembly would cause a lot more damaging harmonics/vibrations as well? Could damage the block and crank eventually I would imagine. Particularly in a high RPM application
What design changes have been incorporated into engine design to beaf up the added thrust bearing demand and lack of lubrication to the bearings since the mandatory clutch engagement was mandated for engine start-up? Also, what's the average life expectancy of thrust bearings since that mandate was imposed and how does it compare to the previous design?
Awesome explanation. I had a problem with front crankshaft oil seal. We had to use a lot of force to remove timing belt pulleys. Finally we re placed the seal but then when the crank shaft moves backwards and forwards slightly, the seal comes out spilling lots of oil.Could this lateral movement of the be a sign thrust washers are worn. Car has power and starts well. Pls help.
Take a dial guage and place it at the end of the shaft and push it to see how much its walking, if its more than 0.005 your thrust bearing is gone and you need to attend to it otherwise you riskibg damaging the crank shaft.
So the only thing that keeps those thrust bearings in the block is the recess in the block and the crank? Thats a very interesting design. I've never had the bottom end of one of those apart before. Do you think that is a better design that the one piece main bearing and thrust bearing combination?
My mechanic just said the my crank shaft moves back and forth. How big or how far does it move? And how bad is the situation? He did say that the trust bearings needs to be replaced.
Thanks for the material, I just got from my mechanic, one of thrust bearing just fell down to the oil pan which means that my cranckshaft is moving back and forth for at least 2 mm. Unfortunatelly it's impossible to replace the thrust bearing without disassembling the whole engine :(
Awesome video. How often do you see these bearings go bad on a daily driver honda? I ask because I've never seen It happen with my hondas and I've taken them 300k or more.
Should I replace the thrust bearing? I compare the old and new one with digital measurement, I couldn't see any different or wears...Please let me know. Thanks..
Eric thanks for posting the thrust bearings. I was just curious too cause it has been a long time since I've installed one. How does the orientation of the oil grooves on the thrust bearings go? is it outside or inside of the block? Just bring back old memories since I am just a DIY. Keep posting it and as always continously learning from your site. Thanks.
Sometimes the air intake sucks some in, especially if the car has ever been driven through water. I've seen people take their 4x4's through water and then the engine hydrolocks.
Will a bad thrust bearing cause a sharp, loud tapping sound and a flex plate to fatigue, crack and break apart at the center around the bolt pattern? My stock 27 year old flexplate broke, the replacement flexplate showed cracking and began making tapping sounds after a while from soft tapping to loud that come and go at idle but are very loud under throttle pressure while cruising. Any tips would help.
I need to take out the camshaft bearing on a 1985 toyota van 3Y-EC, but I do not want to remove the base pan of the the engine. Is there a tool to hold the hydraulic lifters in place so it don`t drop into the base pan?
I have a question would bad thrust bearing cause thumping when engaging into each gear, feel it most in 1st and 2nd? I have new clutch, innovative mounts and poly suspension bushings lmk thanks
Well, that's another reason why I NEVER push the clutch in when shifting gears. I only use the clutch for 1st gear and reverse and starting the engine if it has one of those stupid switches on it.
Hey eric. You have great videos and one hell of an ambition to tear into a car and find it and fix it. Im not sure if im right but i believe the trust bearings on honda engines don't rotate because the main cap that holds the bearing and the crank down prevent it from moving? any how i've been subscribed and watch your videos for hours on end. Keep up the good work bro.
What about automatic I think this may be the culprit for my sensor going out it's happened twice already maybe a bad sensor I dont know any tips on how to check it
Hey Eric, good comparison of manual vs auto, never really thought about that as binding the crank but i can see it's possible, maybe a dial indicator to check movement if doing a clutch on a hi mileage car? Guess Honda isn't perfect either as you do plenty of repairs on them. I assume the kids hot rod Hondas with higher resistance pressure plates put more pressure on those bearings then?
I've been thinking that manual transmission cars should be started in neutral, foot off clutch so there is no load on the thrust bearing until oil pressure builds. Your thoughts?
You could by pass the clutch switch to obtain this, I had an old chevy 1960 with an inline 6 and a powergide trans that had the neutral switch bypassed and you could start in in gear gotta really keep your eyes open lol
My 94 Honda prelude starts up but when it warms up and I push in the clutch to shift it shuts off and I was told it was the thrust bearings so I have to take the engine apart and fix it just don’t know which ones fit
I have a Questing... My old man has a Ford Transit "07 2.2Tdci motorhome... When it is very cold it wont start... Just makes a clicking noise... But when you heat the under side of the engine the starter and the oil pan with a heat gun it cranks like new... Bad starter...? It has a new battery which is in the cabbin... It also had check engine light for EGR valve circuit which i replaced and now it is all good... But starting is the problem...
I always thought thrust bearings had physical ball bearings within them. I thought these u are talking about are thrust washers. Since theres no physical bearings there more like shims
can the thrust bearings make my car want to shut off as i press on the clutch because my car does that but only when the engine is at operating temperature when its cold it works normal
Yes it can have that effect. When the car is cold the oil is thicker and harder to squeeze out from between the two pieces of metal so it keeps spinning. As the oil warms up it flows easier and then you get metal to metal.
hey eric i know this is not related to the video...my 95 ford explorer won't start by the ignition , it only starts when i put a screwdriver on the solenoid......do you know if it's the starter or something else.....thanks
Hi Eric, why that Civic run out of oil? Please tell us. For me , look alike that leaked oil seal crankshaft at Flywheel , I can see black oil wetting the Gear box. Correct me if I'm wrong.
I have a 92 civic dx with the D15B7 motor. currently going through rebuild and I'm on the thrust bearings. I can get the left bearing in but the right bearing does not have enough clearance I guess to get the bearing in. any tips
Great video, 9 years later still perfect. Thank you!
I had no idea what that metal bit was, but this video cleared that right up. One of these bearings wore down a groove in the main bearing cap and then dislodged to the point it seized my engine. I'm stubborn AF, and I like to fix things so I took the whole engine apart to find that. Daily driver, oil level was good, recently changed...
Didn't really understand what Flying Miata was talking about in the description for their clutch switch override until just now. Thank you for your service!
I am rebuilding my a20a3 honda engine and have gotten to the thrust bearings, not sure what they were used for, but now i know. The book says and I quote "thrust washer thickness is fixed and must not be changed either by grinding or shimming. Thrust washers are installed with grooved sides outward" so the groves face outwards from the bearing housing, example @ 4:50. Thanks for the video eric!
I am having low oil pressure light trouble, manual transmission, I deleted the dampener, I can make the light go out, at 50, by depressing the clutch a little, thanks so much I will test it, using your method.
Hi, I'm having the same problem, did you end up replacing the thrust bearings and did that fix the oil pressure problem? Thanks.
yes, I replaced the thrust bearings, oil pressure light isn't coming on anymore, This is also amylee7017
@@janpalmer3025 oh that's great, I hope that fixes my issue too, thanks a lot for replying!
Thanks bro. Practicing for my ASE P2 test and didn't know what theses were or what they did. Loved that you also explained the diagnose on it.
Great stuff, I am sat in a garage waiting for them to sort my car and thanks to your video I understand exactly what the problem is and the scale of the job. Thanks for your video.
Appreciate this: I had my engine rebuilt recently and one of things they did was add upgraded LS1 thrust bearings. Blew two pistons, two rods and cracked crankshaft. I assume that might be why the crank borked along with the rod bearings.
Thrust bearings should NEVER rotate in the engine block!
Correct
That’s my only problem 😂
Nor the main, or connecting rod bearings. Lol
Hi Eric, I'm a big fan of your vids. Helped me out a few times. Just thought id let you and others know that it does matter which way the thrust bearings go in they have a lead/tin/copper sometimes called "white metal" over layer that needs to be in contact with the side that rotates and most are just metal on the other side. If put in the other way round they wont last too long.
I must say that after watching nearly all of your videos you are a really good teacher, thanks, your videos helped me swap out my engine in my 94 buick regal
Thanks for this! I was about to buy a 240sx with a broken thrust bearing and i had no idea what it is. Perfect timing
thanks for the lesson Eric. I am currently doing my first rebuild on a B16A and always wondered what these bearings did. I decided to go with ACL bearings and hope everything fits in place.
Those bearings also provide an intermediary surface for the crank to spin freely against while supporting it so there isn't wear between the crank and the actual block.
No crank no start on a manual transmission, where you're forced to press the clutch for start, then just bypass the switch on the clutch pedal, it's only two wires.. If it cranks over then there's your problem, a binding crank. However, I've personally never encountered this problem before, not saying it can't happen I've just never seen it.
Thanks for this, i was going over spare engine in my shed, taking off the flywheel i noticed the crank moving back and forwards, hence googling "crankshaft end play" brought me here. So had like 1/4 of an inch play. On removing the sump i found a pair of mangled thrust bearings in the bottom of the engine and some nasty grind makes on the crankshaft, so safe to say thats focked. :D
Really helpful man thanks a lot. I'm in a battle with a dealership over a clicking noise and the movement you described and needed all the help I could get.
Eric I'm liking the new format. FATR was entertaining but I feel like I'm learning something when I watch these kinds of videos.
Best mechanic videos on TH-cam!
Good job explaining thrust bearings. Never seen or heard of the no-start condition but that's interesting.
Your like the Mr. Wizard of auto repair.. your infomation is priceless..thank you and keep up the good work.
just today i put back on the pistons and oil pan on my 1987 lancia thema 2.0 turbo, i didn't remove the crankshaft, tomorrow i'll check for any movement of the flywheel .. thanks eric ;)
Good Video. I heard you mention slow starts, my girlfriends impreza, when we got it, I noticed it cranked really slow but never had a problem starting. Now I know to check this when I do the clutch, thanks.
like the video Eric my question is what if your thrust washers are in the oil pan and did I lose oil or oil pressure to that area. Worried that area didn't get enough oil where the rod bearings might be ruined. Tks for your time and keep the video's coming.
I know you probably forgot, but the thrust washers don't rotate. One of the halves carry a locking mechanism. The washers are more characteristic of shims than bearings.
Thanks,love the videos,should you not have a certain amount of play on the crank?
@binnsh 99% of cars out there have a clutch switch that will not allow the starter to engage until the clutch is pushed down, so unless that switch has been bypassed it's not going to start until you press the pedal.
My question, because I can't seem to find the answer anywhere, is which direction do the thrust bearings go? Grooves in so that they touch the block? Or out so they touch the crank? At 4:50 you show a one piece bearing thrust washer and the grooves are out so they would touch the crank. I'm just curious because I can't seem to find an answer and there were no guides with the thrust washers I bought.
I have a test on engine bearing and rotary engines today, this helped me with my review! Thanks Eric!
@binnsh you should start it with clutch pedal pushed down because it it easier for a starter to turn the motor when it's disconnected from the gearbox. Especially in cold winters.
Nice to see a video with academic detail, thanks for your effort.
Hi Eric,
Awesome Video. I'm rebuilding the Engine for my Toyota Camry. Bought new Crankshaft but my question is do I buy Rod, Main & Thrust bearing at Standard Size +00 or should I get them +10 (0.25mm Over)
Thank you
Very good video with clear explanation - much appreciated
great video. I really like the videos that you show us real world diagnosis situations especially when we actually get to see the problem itself in the video and hear or see the problem in addition to the great tips and tricks used to FIND the problem and NOT throw parts at it. Your info is accurate and helpful. thanks.
You breath almost as heavy as I do when I make a how to video, and I smoke. Always love the educational videos.
Haven't commented in a while, but I've been watchin all the vids you put. Thank you again for an informative video Eric!
Does all car have thrust bearing . Good video mate
Hi Eric, Thank you you saved my engine, excellent ....thank you again
I would imagine that the extra slop in the rotating assembly would cause a lot more damaging harmonics/vibrations as well? Could damage the block and crank eventually I would imagine. Particularly in a high RPM application
What design changes have been incorporated into engine design to beaf up the added thrust bearing demand and lack of lubrication to the bearings since the mandatory clutch engagement was mandated for engine start-up? Also, what's the average life expectancy of thrust bearings since that mandate was imposed and how does it compare to the previous design?
Excellent description/explanation.
great information, loved seeing a Honda engine inside where all the oil passages and holes are.
Awesome explanation. I had a problem with front crankshaft oil seal. We had to use a lot of force to remove timing belt pulleys. Finally we re placed the seal but then when the crank shaft moves backwards and forwards slightly, the seal comes out spilling lots of oil.Could this lateral movement of the be a sign thrust washers are worn. Car has power and starts well. Pls help.
Take a dial guage and place it at the end of the shaft and push it to see how much its walking, if its more than 0.005 your thrust bearing is gone and you need to attend to it otherwise you riskibg damaging the crank shaft.
So the only thing that keeps those thrust bearings in the block is the recess in the block and the crank? Thats a very interesting design. I've never had the bottom end of one of those apart before. Do you think that is a better design that the one piece main bearing and thrust bearing combination?
My mechanic just said the my crank shaft moves back and forth. How big or how far does it move? And how bad is the situation? He did say that the trust bearings needs to be replaced.
Thank you! My goodness this was a crystal clean explanation that really helped me
Thanks for the material, I just got from my mechanic, one of thrust bearing just fell down to the oil pan which means that my cranckshaft is moving back and forth for at least 2 mm. Unfortunatelly it's impossible to replace the thrust bearing without disassembling the whole engine :(
hey had the same problem like you, when your mechanic replace thrust washer did they stay in the block and every ting was ok after ?
Excellent video. Are these also an issue for automatics?
Awesome video. How often do you see these bearings go bad on a daily driver honda? I ask because I've never seen It happen with my hondas and I've taken them 300k or more.
thanks for the video eric. learned something new as always. and i'm a big fan of your "informal" type of style. that's how i learn best.
cheers.
Thanks, Eric. Excellent video as usual. Hits it out of the park every time!
what he doesnt even knw wut hes doing...
** trust bearings do not rotate around the crank shaft on honda's. They are held in place on the block side by the main bearing cage. **
My 2004 Acura TL wouldn't start and the Acura dealer said the engine thrust washers had shifted while seated in the holding spot.
Are thrust bearings on all the main journals or just one of them?
will a good oil prolong the life of thrust bearing???
Wish we had more mechanics and motorhead like him. N yea good ol' crank walk sux!
Should I replace the thrust bearing? I compare the old and new one with digital measurement, I couldn't see any different or wears...Please let me know. Thanks..
Eric thanks for posting the thrust bearings. I was just curious too cause it has been a long time since I've installed one. How does the orientation of the oil grooves on the thrust bearings go? is it outside or inside of the block? Just bring back old memories since I am just a DIY. Keep posting it and as always continously learning from your site. Thanks.
eric. whats a reasonal and normal price for an engine rebuild? how much would u charge for a rebuild. from the block to the top
"If I'm honest," your videos are the greatest!
Great videos Eric. I'm new to engines and I'm learning a lot from you but you should consider a tripod. Thanks.
Thanks a lot Eric that helped me in my study , i like your videos such a great and clear explanation
Sometimes the air intake sucks some in, especially if the car has ever been driven through water. I've seen people take their 4x4's through water and then the engine hydrolocks.
A manual clutch has it's own thrust bearing so don't confuse it with the crankshaft thrust bearing
You’re thinking of a throw out bearing or pilot bearing... idk where you’re getting that a clutch would have a thrust bearing?
Pilot bearing and throw out/release bearing are two different things within the transmission....
And thrust bearings aswell are different things completely
@@ColdLikeFire The clutch throw-out bearing is of the thrust bearing type. Usually roller rather than the plain thrust bearing on the crank.
Which side does the thrust washer channels go then??
Thanks your my favorite mechanic to watch very informative and professional thank you! Just subscribed
Can worn thrust bearings in my 98 Safari van be the cause of my serpentine belt continually being spoiled and squeaking and having to be replaced?
@playstation2bigs good quality oil will prolong the life of any bearing, also keeping up on regular oil changes help even more
you are awesome man....you know a lot of stuff and thank you for providing us with your knowledge...
Just learnt something new.Thanks man.
Will a bad thrust bearing cause a sharp, loud tapping sound and a flex plate to fatigue, crack and break apart at the center around the bolt pattern? My stock 27 year old flexplate broke, the replacement flexplate showed cracking and began making tapping sounds after a while from soft tapping to loud that come and go at idle but are very loud under throttle pressure while cruising. Any tips would help.
I need to take out the camshaft bearing on a 1985 toyota van 3Y-EC, but I do not want to remove the base pan of the the engine.
Is there a tool to hold the hydraulic lifters in place so it don`t drop into the base pan?
I have a question would bad thrust bearing cause thumping when engaging into each gear, feel it most in 1st and 2nd? I have new clutch, innovative mounts and poly suspension bushings lmk thanks
can i replace thrust bearings by just removing the oil pan? and without removing the clutch bell housing?
so what does it mean when you get a spun bearing ?
Your a good teacher, even a dummy like me can pick up what your putting down.
I am in the middle of a rebuild. Do you remember which way the thrust bearing groove is to be installed?
Awesome vid man. :3 Love the informational style.
I'm more mechanically at home with bikes; but an engine's an engine, right?
Are there any video's for installing this plate?
Oh and do most engines only have the crank supported by one thrust bearing like the pair on this engine?
@EricTheCarGuy can you please take apart and explain an LSD or a VCD (variable centre diff)?
Well, that's another reason why I NEVER push the clutch in when shifting gears. I only use the clutch for 1st gear and reverse and starting the engine if it has one of those stupid switches on it.
Hi Eric if the thrust eat into the crank can I still reuse the crank
Hey eric. You have great videos and one hell of an ambition to tear into a car and find it and fix it.
Im not sure if im right but i believe the trust bearings on honda engines don't rotate because the main cap that holds the bearing and the crank down prevent it from moving? any how i've been subscribed and watch your videos for hours on end. Keep up the good work bro.
What about automatic I think this may be the culprit for my sensor going out it's happened twice already maybe a bad sensor I dont know any tips on how to check it
Hey Eric, good comparison of manual vs auto, never really thought about that as binding the crank but i can see it's possible, maybe a dial indicator to check movement if doing a clutch on a hi mileage car? Guess Honda isn't perfect either as you do plenty of repairs on them. I assume the kids hot rod Hondas with higher resistance pressure plates put more pressure on those bearings then?
I've been thinking that manual transmission cars should be started in neutral, foot off clutch so there is no load on the thrust bearing until oil pressure builds. Your thoughts?
You could by pass the clutch switch to obtain this, I had an old chevy 1960 with an inline 6 and a powergide trans that had the neutral switch bypassed and you could start in in gear gotta really keep your eyes open lol
My 94 Honda prelude starts up but when it warms up and I push in the clutch to shift it shuts off and I was told it was the thrust bearings so I have to take the engine apart and fix it just don’t know which ones fit
GREAT video!! I learn SO much from you Eric! I love cars, and I love your video's!!! Keep it up!! Maybe one video you will have to show a Hybrid.
I have a Questing... My old man has a Ford Transit "07 2.2Tdci motorhome... When it is very cold it wont start... Just makes a clicking noise... But when you heat the under side of the engine the starter and the oil pan with a heat gun it cranks like new... Bad starter...? It has a new battery which is in the cabbin... It also had check engine light for EGR valve circuit which i replaced and now it is all good... But starting is the problem...
I always thought thrust bearings had physical ball bearings within them. I thought these u are talking about are thrust washers. Since theres no physical bearings there more like shims
can the thrust bearings make my car want to shut off as i press on the clutch because my car does that but only when the engine is at operating temperature when its cold it works normal
Brayand Perez please get an answer i have the same problem
Yes it can have that effect. When the car is cold the oil is thicker and harder to squeeze out from between the two pieces of metal so it keeps spinning. As the oil warms up it flows easier and then you get metal to metal.
Great video and works thanks alot Eric.
thanks for your videos eric they really do help
does a worn thrust bearing/wearing one make any sound before it gives out and you cant start the car? like a shearing noise within the engine bay?
Great video Eric. Thanks
hey eric i know this is not related to the video...my 95 ford explorer won't start by the ignition , it only starts when i put a screwdriver on the solenoid......do you know if it's the starter or something else.....thanks
Hi Eric, why that Civic run out of oil? Please tell us. For me , look alike that leaked oil seal crankshaft at Flywheel , I can see black oil wetting the Gear box. Correct me if I'm wrong.
THANK YOUUUU HAVE A GOOD DAY BRO
I have a 92 civic dx with the D15B7 motor. currently going through rebuild and I'm on the thrust bearings. I can get the left bearing in but the right bearing does not have enough clearance I guess to get the bearing in. any tips