How To: BMW F01/F10 Differential Mount Replacement + Flex Disc (Guibbo) [DIY]

All BMW F01 and F10's suffer form the same problem. It's a platform issue but can be fixed more or less easily. If your 528, 535, 550, M5, 730, 740, 750 or 760 was diagnosed with a cracked differential mount, then this video will showcase how to change it yourself if you have at least a little experience screwing around on your car yourself. And while you are in there, take a look at your flex disc (guibbo) and maybe change it right away since they usually develop cracks as displayed in the video and need to be replaced at around 80k miles. The differential mount is due earlier at around 65k miles.
Let me know if you have any questions or constructive critique. Enjoy watching!
Parts and #:
(for 535i) I recommend to double-check fitment here www.bmwpartsno... or her parts.bmwnorth...
1x Rubber Mount: 33316792872
1x Bolt for large mount: 33176760336
1x Nut for Bolt large mount: 33306787062
2x Bolt for small mounts: 07119906460
1x Flex disc / guibo: 26117610061
6x Bolt for flex disc: 26117527475
3x Nut for flex disc: 26127536563
Find BMW torque specifications here:
www.newtis.inf...
Check out the "no exhaust setup" sound-check here:
• BMW 535i F10 Exhaust D...
#BMWDIY #DiffMount #BondGarage
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[@Indigo-bob]

Your f10 is cleaner underneath than mine is on top. Nice work. Your garage is clean too. Studio conditions

[@oliveryoung2000]

Haha same here

[@GulamMustafa-be9rt]

Car looks very clean underneath

[@BONDGarage]

SoCal garage queen ;)

[@MrDosSantos991]

Very informative video👍 i noticed one thing tho. When pressing in the bushing in the back you shredded it while applying torque on it hence the fluid that came out. The back ones are fluid-filled.

[@BONDGarage]

Maybe there are variance in the bushings but to the best of my knowledge they are just rubber and metal. Just got another new bushing last week (since it's been almost 60k miles on this bushing so of course it fails again) and it's not fluid-filled. I think what's been pushed out in the video is the WD-40 I used to lubricate the tool. You spray some on the threads to make it easier on the nut.

[@MrDosSantos991]

@@BONDGarage don’t buy aftermarket bushing, even its lemforder because they don’t make them in germany anymore. It’s all made in asia and the rubber they use is poor quality. I going to buy original

[@johngilly2541]

Just had my 640d Gran Coupe back from BMW after EGR valve cooler safety recall. It only catches fire!! They gave the Car a health check and they spotted that the Rear axle Carrier Diff Rubber bush was split as in your video. Asked for a quote to replace a £57 part. They said £450!!!!!

[@BONDGarage]

It's a disease on this platform. But good point, I think I forgot to mentioned the 6 series in the video.

[@johngilly2541]

Just thinking about how to replace the rear differential bush. Would it be possible to cut the old bush out then pulling the new bush in without dropping the exhaust and differential?

[@BONDGarage]

@@johngilly2541 The diff is in the way. You'll have to drop it a little to make space for the tool. I also wouldn't recommend trying to cut the old bushing out. It may cause damage that could damage the new part. The pull tool is pretty straight forward and the best method of replacing a bushing.

[@marcwoodward8056]

The procedure shown in this video is exactly the same for the F06 640i GC. My 640 looks exactly the same as the F10 underneath. The heat shields even have F10/F11 stamped into them! I had the same issues with cracked differential mounts both rear & front along with a severely cracked Guibo. The cracked Guibo caused loud vibration in the cabin from the drive shift. This is a great DIY for us F06 owners too. Thank you @Bond Garage!!

[@skysky-go3kl]

You help me a lot! Thanks! Untill I've change IT I had vibration în all my car and în The steering wheel too at 120km/h now The problem is solved. I always thinked that was from The tyres or rims even if I balanced them 3 Times and change them with other pair The car stilul had vibration because of that differential mount!

[@BONDGarage]

Glad to be of use and happy to hear that you sorted it out!

[@zippodk]

I think I have a similar problem. My steering wheel also vibrates 2 different wheels and balancing the wheels problem is still there. I have had a remap I can hear a groan from behind(rear) axel when under load 2000-3000rpm it was not there before. I checked and i can see the bushing is totally destroyed. Guibo looks fine but I will change it.

[@fixityourself1111]

Hi i did my f07 gt, didn't remove the exhaust just hung it on some large double ended ring spanners and moved the diagonal stiffners , i just lowered the diff. Made my own pulling and push kit. All done most from the back. Manual says remove the diff completely but this is just so labour adds up. I have a 535d 5er niw and its slit. You feel a thud on gear change when sprinting. Also i did the prop bearing....top tip makes sure you have the right bearing before you start that job. As this guy says match mark any rotating part locations. 👍

[@BONDGarage]

Totally agree. Always a pita to find out your part doesn't fit after you started taking things apart. Manual says to remove the diff so it's more ergonomic for the mechanic to work on as the company needs to provide somewhat decent working conditions. in reality it depends on the mechanic if they feel like removing the diff or simply lower it like we did. most will lower it and be done with it.

[@wkb8409]

Before i buy this Guibo and my f10 car guibo was different. After i find Diffrential side right type guibo is triangle position have wide washer and this hole is connect to york by bolt. Your guibo is front side guibo. Fist time i use this guibo on your video and fixed but its have little vibration at a few days after . So after a month i buy other type guibo and fixed. that guibo and that was right guibo.

[@BONDGarage]

that's interesting. I've went with the part numbers from realoem. working fine on my cars.

[@nabilsas2925]

thank you very mush for this video i spent a long time looking for this solution

[@BONDGarage]

Glad it helped

[@ricardorobinson3009]

The best DIY video on KZbin

[@BONDGarage]

Thank you Sir

[@gregleri535i]

Hi.. Thanks for the videos.. Very helpful. I also have a Black 2013 535i M-Sport.. 77000 miles. So far zero issues with the car. Just routine maintenance and oil changes like you said.. I have a question.. Do you have some kind of headlight cover? Also where did you get the black reflectors for the rear bumper or are those painted?? Again I appreciate your time and all you do explaining things. Take care 👍

[@BONDGarage]

nice car ;) headlights, fog lights, tail light and even side indicators are all tinted with vvivid light smoke. reflectors all around are wrapped with a black from 3M. wanted to keep it reversible if needed. there's a video on the channel how to remove and wrap the reflectors and side indicators. it's pretty easy to do.

[@az9706]

Fabulous video. My diff mount is torn at 64k miles on a 2013 F10 550. Dealer wants ~ $2,300.

[@BONDGarage]

I feel you! Just like mine. Dealer quotes are on the moon. But you can fin shops that do it for $500-$800 and they are not any worse. Good luck!

[@Robert.K]

E-torx E12 or E14 for the bolts going through the flex-disk, I believe

[@thomasstiglich3484]

I was just about to post that. Standard sockets will not work properly.

[@jamesharte8390]

First class video, i liked and subscribed; Did you experience symptoms of a problem or did you find the cracks on inspection?

[@BONDGarage]

Highly appreciated it! I had zero problems or signs of a problem. Just knew that this platform has this issue so I checked when inspecting and noticed the crack. Same with the flex disc. I know they wear out but mine still had some life left but since I was in there... might as well. If they wear out more you will be able to hear a clunking sound and feel it in the powertrain.

[@jjjohn5914]

Excellent work.....Just curious....What would happen if you don't replace the rear diff bushing?

[@BONDGarage]

eventually the center piece of the bushing (which holds the bolt to the diff) will separate from the rest of the bushing. then it'll just flop around loosely. so it won't fall out but can cause damage to other drivetrain parts.

[@bogdanisarie7720]

Why didn’t you change both guibo, the one in the front as well

[@elvisd6691]

I ended up replacing the front guibo which is metal with the rubber one as I think, BMW discontinued the metal Guibo. Did I screw this up? Also, I Installed it with the drive shaft bolt arrows pointing towards the rear diff. Since I have no point of reference from the old one. Thanks again.

[@BONDGarage]

there are opposing arrows on the guibbo. the alternate. just need to make sure they point to a flange. as for the metal guibbo, I haven't seen them wearing out yet, but they may have to be replaced sometime. so if that part isn't available you can only use what BMW offers at this point. BMW in the early 2ks still had front and rear rubber guibbo. as long as it's installed correctly there shouldn't be a problem.

[@mfyz74]

My car's differential bush also needs changing, OMG I didn't know its that big of a job. Now I have to find a good garage. Nice video though.

[@BONDGarage]

Good luck

[@wkb8409]

Thank you for video. I learning how to fix. I have question. "Mark the position of the center bearing." Is important? I dont know how to doing.

[@hlynursigursson607]

Thank you for this video! Im curious why you didnt also changed the front guibo as well?

[@BONDGarage]

The connection between gearbox and driveshaft is different to the guibo at the rear diff. Take a look at 18:42 you can see it in the background. It's a metal piece with individual rubber mounts. Haven't had any problems with that so far.

[@petergold3286]

Well done man! Better doing it yourself then let anyone else doing it for you. Great video.

[@BONDGarage]

Thank you Sir!

[@ygtcbee23]

Thanks for making the video! Did you purchase the rear bushing puller or did you find an online rental? These specialist tools are very expensive to own for a single-use

[@BONDGarage]

You are absolutely right. Considering that most likely you only use it once or twice it's not a good investment. Some friends of mine have similar F10 and F01 bimmers so I probably pass it on to them once the time comes. Tool rental would be a great option for one-time use, just make sure it's in good condition. I've even seen people built these tools themselves as it's not really all that hard if you are a skilled metal worker ;)

[@y22dtr1]

@@BONDGarage hello,how you got out the shaved torx?

[@klajditupi3464]

Am I the only one who noticed that rear bushing leak at the end? Hopefully that was left over fluid from the brake cleaner? If that was fluid from the bushing, and you squeezed it enough to leak that means it busted…did you have to replace it again after this video? I’ve definitely been there 😂

[@BONDGarage]

must have been from the cleaner since it's a solid rubber bushing. these aren't fluid filled to my knowledge.

[@klajditupi3464]

@@BONDGarage the front two smaller bushings are solid rubber. The larger bushing in the back has two separate cavities filled with hydraulic fluid.

[@SipeskClassics]

Hello! Thank you for the detailed and informative video. I would like to rent the extraction tool to perform the same service. Would you consider that? I would love to pay reasonable amount and then get it back when the tool is returned.

[@AB-rh5sm]

Thank you for the video! Where did you get f10 repair manual??

[@BONDGarage]

I don't have on but used to be a BMW mechanic. Also use this page www.newtis.info/tisv2/a/de/ (maybe there's an english version as well) for torque. It's literally a stripped down version of TIS (technical information system) BMW uses with repair instructions and torque specifications.

[@a1enterprise405]

I have that exact f10 fully loaded 2016. It vibrates heavily down the highway when I accelerate around 60-90mph. I can’t tell if it’s coming from front or back I think front. Going to take it to shop sure where yet. It just happened a few days ago

[@Sonin66]

Your front differential doesn't have the guibo, only the back does. It's most likely your rear

[@a1enterprise405]

@@Sonin66 that’s what I was thinking as my entire seat under me shakes. I was also thinking it might be my front left axle cause that tire makes a sound when I go over bumps. I’ll find out this Tuesday

[@Sonin66]

@@a1enterprise405 good luck bro

[@BONDGarage]

keep us posted what if was

[@dirtyharry7728]

Thank you. Very helpful

[@BONDGarage]

Thank you :)

[@FabianCharrua]

Why not change the front flex disc as well? Im about the replace the diff on my F12 which is probably very similar this. Thank you

[@BONDGarage]

Because there is none. On the front you'll find individual rubber mounts sintered to the disc. Might they come off? Possible but mine have been fine. Good luck doing the job

[@elvisd6691]

Great video. I’m in the process of changing the rear diff bushings for a 2015 535xi and my current guibo is metal and appears to be in good condition. Can I drive the car around temporarily for a diagnosis without the exhaust? Temperatures here are about 32 Fahrenheit.

[@BONDGarage]

Just briefly for diagnosis, yes sure. Ideally with cold engine if you‘re only looking to check on anything other than engine related problems.

[@EnergicVisions]

Hi and thank you for making this video. Would you be able to share the part number of the bushing puller tool?

[@BONDGarage]

I used the installation tool kit "BMW2260" from KTC Auto Tools for differential rear bush removal. It's only for the big bushing, not the two smaller ones at the front of the subframe. Let me know if you have another question.

[@valefur72]

Hallo, very interesting video. Do you think that it will be possible to make the fault bushing more rigid using a technical adhesive? SIKA 522 AT may be good...

[@BONDGarage]

there are some 3D-printed inserts that fill the gaps. saw it on a fb group. pointless in my opinion though. simply adding some tough glue into the gaps is another way of creating a solid bushing. as long as it doesn't come loose it might work.

[@musthakahamad]

i have a crack in GUIBBO .. but the labour cost 700$.. how long i can drive with the minor crack and what is the disadvantages if i dont change now ?

[@BONDGarage]

I've never seen a fully "ripped apart" guibbo. there are metal bands around the relevant connections but you will start to experience some clunks in the drivetrain

[@sawomir6037]

Hi this is a very explanatory video. Thank you very much. Did you exchange a center bush becuase I ddin't see it, does it important? I'm askingbecause after exchange flex disk in my car I have kind of vibration or/and drumming in the rear, and mechanic didn't change this center bush.

[@BONDGarage]

I did not as mine was fine. Best to bring it back and let them figure out where it went wrong.

[@doekroek3222]

Hello, Can i ask what the symptoms where of the failure of the bushings and hardy disk?

[@BONDGarage]

I had none. Only noticed it during a visible inspection. In extreme cases it will become very noticeable that something is wrong but I'd advise to take a look at it every 50-60k miles.

[@jameskelly9510]

Great video Bratha! ❤️

[@BONDGarage]

Thank you :)

[@Jstylez_dnb]

Great video. Do you have a video on replacing motor mounts?

[@BONDGarage]

Thank you. I don't have a video on that and hope to not have to make it anytime soon :) My 535i is currently mostly stationary and has only 65k miles on it but you got me curious and I'll take a look in a few weeks. It's possible to change them in your garage without lift. A hydraulic jack will do but somebody nearby may be of benefit. Watch out to not squeeze anything while lifting the engine. Should only be 2 mounts and doesn't require any coding. If you can't find your specific car and engine, use the next closest as reference. It's a little different but mostly the same. Whenever mine are due I'll document it.

[@Sonin66]

You have to drop the subframe and raise the engine to get them out

[@hammelbammel1651]

Very good! Where did you order the extraction tools and the replacement bushing?

[@BONDGarage]

I've got the tool from EMG Tools (shop.ktcautotools.com) feel free to try using discount code "ePro5" maybe that's still active. The replacement bushing came from BMW Northwest. However, more recently I've been ordering from www.bmwpartsnow.com both are pretty much the same but pricing is sometimes different.

[@xwu8147]

Great video, thanks a lot! So the trick with lowering the diff will be the same for F02/750Li? And it will take a skilled mechanic about 2 hours to change the diff mount? How much additional time is needed in case both (2) flex discs are changed as well?

[@xwu8147]

PS: just realized my car has active drive and rear steering as well. Will this make things much more complicated?

[@BONDGarage]

wait, there's an F10 with rear wheel steering?? well everything that's in the way will cause a little delay. the active drive won't bother since it's within the sway bar. Those won't affect the flex disc job though. I'd add 30-60 min for those just to have some buffer.

[@xwu8147]

@@BONDGarage It's an F02 ;-) Thanks for your reply!

[@jc07788]

I have a 6 series which has a wobble between 70-75ish mph. Thought it was wheel balance issues but could it be diff bushes? There’s cracks in my main diff bush. I’ve had the guibo replaced already

[@BONDGarage]

worth a try. many people say it's the tension struts. some change it all and it still wobble. could be a slight bend in a wheel. good luck and let me know if you get rid of it.

[@jc07788]

@@BONDGarage it’s definitely at the rear. I’ve done the tension struts and new brakes all round. I’m leaning towards either wheels or bushes at the rear

[@rt.5489]

Thank you for the video. Will it work this way with active steering and rear wheel steering?

[@BONDGarage]

should. active steering only affects the front axle and I'm not sure that these platforms are offered with rear wheel steering.

[@rt.5489]

@@BONDGarage F01 has rear wheel steering.

[@user-he9kg1os3l]

Where have goh bought these tools?

[@BONDGarage]

got it from JTC auto tools. Sold it ever since. Will need it again lol. Found one on amazon that looks fine. For the front bushings I'll go with German specialty tools.

[@mexicanumex]

nice video by the way!

[@voukaaa]

Thanks mate👍👍👍

[@BONDGarage]

Happy to help

[@lutimletap648]

Excellent video. Would this guibo cause a vibration during coasting on a 528i or could it be the center bearing? Once you step on gas pedal vibration goes away.

[@BONDGarage]

vibrations can have all kinds of causes. they can be pretty hard to identify. gumbos usually don't cause any vibrations. it's more like a clunk when it's worn out. center bearing could be a cause. you'd notice it coming from right under your center arm rest. could also be the tension struts on the front axle. they are known to go out sooner than later but I'm just shooting in the dark here..

[@lutimletap648]

@@BONDGarage I definitely feel the vibration in the seat. Tension struts do need to be replaced. Have you replaced the ball joints on F10? The torque on the ball joint nut is ridiculously high... I am sure for a reason.

[@ismxil.1]

Hi nice video. I have some questions when you replace the flex disc is it important to mark the diff flange and drive shaft flange that the flex disc sits between are the 2 seperate flanges balanced? Also do you know why the f10 seems to vibrate between 120 to 130kmh it seems to be common problem affecting the f10 chassis. Thanks

[@BONDGarage]

You don't have to mark the flanges. They aren't balanced against each other. For example, if you remove the entire drive shaft, usually you won't put it back exactly the same way and it doesn't matter anyway. I marked the bolts to make sure to complete the 90 degree angle. Just make sure that the arrows point towards the flange. Regarding the vibrations I haven't experienced that yet but it may also be because of the less than ideal street surfaces in LA. Usually such vibrations can be caused by wheels, brakes, play in wheel bearings or suspension components or center bearing of the drive shaft. Hope that helps

[@ismxil.1]

@@BONDGarage hi thanks for the reply. The reason i questioned the prop flange and diff flange needing to be marked was because of an article i seen i have posted the link www.newtis.info/tisv2/a/en/f10-520d-lim/repair-manuals/26-propeller-shaft/26-11-single-multiple-part-propeller-shaft/1VnY9r4jM5

[@BONDGarage]

It's always safe to follow TIS 👍🏻 I can't absolutely determine if those parts are balanced against each other but I can say that when I replaced or repaired diffs in the past (which doesn't happen very often) we never had to balance it against the propeller shaft. The reason why TIS, myself and most people will recommend to mark the position and assemble it as it was originally is simply: it worked before in that position so let's not mess around with it. Simply to reduce the chances of introducing an imbalance. However, that doesn't mean that it will definitely cause problems if you don't mark the position.

[@georgiosz.]

Check ball joints of the output shafts...My F01 had this kind of problem Nad caused vibrations at 120 km/h

[@davidbarlow7955]

Very nice

[@MotoBeardLA]

Hallo Bond Garage,| first question is if you are german by change? I have the same issue that my flex disc is cracked which was discovered while my whole fuel system incl high and low pressure pump failed on my 535D xDrive. Do you have to replace all the bolts with new ones? I am also in the LA area and was wondering if you run a shop or do private work on cars. Thx.

[@BONDGarage]

jup. german. the bolts need to be replaced since they are "stretch" bolts. the 3 nuts could be reused but since that is the smallest position I'd renew them as well for peace of mind. I'm not running a shop but work like this can be handled. A friend of mine runs a shop (Westwerk German Auto) - handles Porsche, Audi, MB and BMW. On the same corner is a BMW specialist shop. I had mine at Ikonic Auto before but was returned with a dent. DM me on IG for more details.

[@MotoBeardLA]

@@BONDGarage alright will do so, I’ll dm you auf Instagram . Thx for your respond.

[@MotoBeardLA]

@@BONDGarage Was ist dein Name auf Instagram. Couldn’t find you under Bond Garage.

[@BONDGarage]

@@MotoBeardLA my bad. it's @hajo.bond

[@sergiydrabott9487]

Do you know if you have to remove the suspension or axle first to remove the differential? I’m in a middle of replacing mine, along with all the bushings, but not sure if the differential just drops down and out, or axles wont let it drop.

[@BONDGarage]

I removed the prop shaft since I changed the guibbo as well but didn't touch the drive shafts going to the wheels. Just lowered the diff on a jack to make space. Getting it back in with the drive shafts attached is definitely harder compared to handling the diff by itself. But doable.

[@GeorgeAusters]

Good video man!

[@BONDGarage]

Thank You!

[@3xcelsi0r10]

Hey, nice video ! Do you have any tutorials for swapping the rear axle / diff ?

[@BONDGarage]

I don't, and hope to never have to do that. But in short: remove the left and right drive shafts and the flex disc, then loosen the mounts (2 small, 1 big) and the diff should fall right into your arms. Best of luck

[@3xcelsi0r10]

@@BONDGarage I have already done it :P but thanks

[@BONDGarage]

@@3xcelsi0r10 hope everything went smoothly. nice Skyline btw

[@3xcelsi0r10]

@@BONDGarage Thank you sir ! When I swapped my diff I saw that my gearbox is leaking oil... BMW givin me troubles :( but even the underside of your beamer is cleaner than my life :D

[@BONDGarage]

@@3xcelsi0r10 😂 guess I got lucky. had some "moist" spots when I got the car but they've disappeared ever since. not to jinx myself...

[@isanchez9839]

What are symptoms of this going bad?

[@BONDGarage]

you may be able to feel something in the drivetrain but since the roads here are pretty crap I can't nail it and just go of visual inspections. like the bushing I installed in this video is already gone by now. just lasted about 60k miles and now an entire arm is torn off.

[@invincibearofficial]

Are the bolts single-use items? I have to do this job on my F02 and am wondering if I need replacement bolts in addition to the new flex disc and bushings?

[@BONDGarage]

Whenever it's a "stretch-bolt" (meaning you have to torque it and then give it a 90 degree turn), those are single use since it already has been stretched. All other bolts can be reused if there's nothing wrong with them. BMW will usually recommend to replace bolts and will do so when performing any repairs. Personally, I replace bolts within the powertrain for peace of mind.

[@christopheredwards8050]

Will this same procedure work for an F13?

[@BONDGarage]

you'd need to check the part numbers to make sure

[@Yurfah_Kinfays]

Did you replace the rear and front differential bushings with the same tool? I noticed on ktc tool they have separate front and rear diff tools

[@BONDGarage]

the front bushings are smaller. you'd need 2 different tool sets for both. only the threaded rod and the big nut can be used for both.

[@anamariaherta8094]

how is that car so clean underneath????

[@BONDGarage]

car is kept in SoCal and rarely parks outside. not much rain over here and snow is said to be a myth. weather helps keeping it clean.

[@apointb5072]

good evening Sir! Do yo know torque spec for drive shaft central bearing mount? Thank you!

[@BONDGarage]

I'd guess 25 or 35Nm but can't say for sure. The page I used to stalk for torque specs was just turned into a membership platform. I'm sure the information can be found on some forum. Would be great if someone with that knowledge would chime in.

[@josephbantigue9516]

Hi how would you know if it needs replacing without looking at it. Can you feel it if its cracked?thanks

[@BONDGarage]

I couldn't feel anything just from driving. Visual inspection is the way to go. Luckily it's pretty easy to spot.

[@bimmerjaz]

Does that tool pull front and rear mounts?

[@BONDGarage]

the front mounts are smaller so they require another tool

[@peacewalker87]

I don't understand where to mark

[@pedrogonzalez9943]

Can you list part numbers for all parts used?

[@BONDGarage]

I'm sorry I forgot about those. Description is updated to include all part numbers. Keep in mind it's for a 535i. Other models may have variations. Also included a link to pages to double check the number to fit your car. Thanks for the reminder.

[@swiss275]

I know this is quite late but question...does the differential still needs to be lowered even if I’m only changing the flex disc?

[@BONDGarage]

no, it doesn't. but you will have to lower the drive shaft centre bearing to create enough space. still easier than lowering the diff.

[@zorbeyerol]

Can a split in the guibo cause vibration just on 1500rev? I am experiencing a litte vibration on 1500rev, turning the steering wheel to the right and on Drive mode. Fine on N. Thanks in advance?

[@BONDGarage]

hard to say. but if your guibo is split I'd change it anyway. Let me know if that solved the problem.

[@adambond9674]

How did u align the differential? Mine is so difficult to move around. The bolt holes wont align at all

[@BONDGarage]

a lot of wiggling. it's quite a pain

[@Sylverlee]

If there’s no symptoms for people for tens of thousands of miles is there really benefit to refreshing it?

[@BONDGarage]

avoiding catastrophic failure maybe? the E46 M3 was notorious for braking rear subframes. you didn't really notice until the entire axle broke out. that's why you perform inspections to catch problems before they cause headache. you could also drive until things turn bad but usually that causes more damage so personally I recommend preventative maintenance.

[@florinamicula7359]

Did you have any vibration on the car?

[@BONDGarage]

nothing a the time of making this video

[@Dahigi777]

How expensive is the bushing puller tool? Where to buy?

[@BONDGarage]

I got it from ktcautotools. just type in bmw2260 into the search bar on that page and it should pop up. it's currently $140

[@selimmiah5172]

How long did it take you to change the mount?

[@BONDGarage]

Takes way longer when you try to film and explain 😄 Changing the rubber mount itself shouldn't take you more than an hour once the car is in the air. And that's inclusive quite some breaks you will have to take as you tire pulling it out and squeezing it in. Drop the exhaust, remove the heat shield and the diff and off you go. You can comfortably finish within 2 hours all together.

[@zippodk]

Did you have some symptoms before you changed the parts?

[@BONDGarage]

no driving symptoms but visible damage

[@mexicanumex]

what was the problem? how dis you come to realise that those are gone? simptoms? mi f01 has a rough gear change in sport mode sometimes, can i pick youre brain on that?

[@BONDGarage]

Hi Daniel. I had literally no symptoms at all. At least nothing noticeable. Just know that the F10 and F01 platforms have that problem and I noticed the cracked bushing upon visual inspection. A quick look brings clarity. If your F01 shows rough gear changes at times, it can be only a few things. How many miles does it have on the clock? Have transmission- and differential-oil ever been changed? Check on the condition of flex disk and driveshaft center bearing. Diff bushings could be a reason. Transmission- or motor mounts could be possible as well. I remember seeing a thread on a bimmer forum like that as well. That may help narrow it down.

[@ismxil.1]

Hi i have some questions when you replace the flex disc is it important to mark the shaft flange and the differential flange that the flex disc sits between or does it not matter in terms of balance. Also do you know about the bibration issue that affects alot of f10 cars where they vibrate arounf 120kmh? Thanks

[@BONDGarage]

The drive shaft and rear diff are not balanced as a system. So you can put it back together without marking the exact position it was in originally. But if you want to make 100% sure you install back to what it was before, feel free to mark the shafts and you can sleep peacefully :) As for the vibration issue, i'm not sure what may cause that at the moment but let me know if you find something out about it.

[@Brendenbandguy]

Do you have parts numbers for the bolts? I can’t find them anywhere

[@BONDGarage]

Yes, they are in the video description.

[@hodzicd.4086]

​@@BONDGarage i hope you are active. Do you have to change the bolts on the Flexdisc? Are the bolts 1-time-use only? Cheers

[@BONDGarage]

@@hodzicd.4086 I can't quote the handbook on this one but when it comes to powertrain components I rather change the bolts than be sorry. We've also always changed them in the shop back in the day.

[@ismxil.1]

Is the flex disc sided as in does it have an orientation because one side has writing on it and the other side is blank

[@BONDGarage]

Nope, it doesn't matter which way around you flip it. Just matters that the little arrows on it point towards the flange that it attaches to.

[@nameaftername367]

It is important to fit it in the same way. It is calculated for different loads in different directions

[@ismxil.1]

@@nameaftername367 can you prove this statement?

[@BONDGarage]

@Name Aftername is right about that. The disc has 6 holes for the bolts to pass through. Inside, hidden by all the rubber, pairs of 2 of these pass-through holes are connected by fabrics to strengthen the disc. These reinforcements help keeping the disc together when driving forward. When reversing, the torque is transferred by rubber only but since we drive forward most of the time that's fine. When it comes to installing the disc, it does matter to install it right, which is with the arrows on the disc pointing towards the flange that it is bolted to. If you mount the flange in between arrows it would be in its "reverse" position which would wear it out extremely fast (unless you are reversing 99% of the time), but you would see that something is off because you would have to force the disc into this position and it wouldn't look straight after installation. As for the writing on the disc, think about it, it's a symmetrical part and every second hole has an arrow on one side while the arrows on the "backside" are right in between. So if you flip it around you are good as long as you keep all arrows pointing towards its flange on each side.

[@ismxil.1]

@@BONDGarage yes so what your saying is the that the writing part does not have to face a certain way? I fitted mine with the writing face the rear of the car but the arrows are facing the flanges so is that ok?

[@dduktube]

At 16:20 is that metal plate cracked?

[@BONDGarage]

You mean when the oil squirts out? I may have lubricated a little too much but that's not a problem. Neither tool nor subframe had any damage from this.

[@dduktube]

@@BONDGarage Isn't oil make it slippery and make bushing move on torque input? What kind of oil did you apply? Manual says to use special spray lube that dries in a few minutes

[@BONDGarage]

The oil was only to lubricate the nut of the tool like shown in the video. If you have some tire mounting paste, that's what I would recommend if you want to lubricate the actual rubber mount. Will make it easier to pull in and will dissipate fast.

[@dduktube]

@@BONDGarage Will tire mounting paste after dried and many years later, if I need to replace the bushings again it will be tacky like glue and won't come off easily? I like the idea of installing but many years of it fused together will be hard to remove. Me thinks

[@decgunner]

What was the symptoms mate ?

[@BONDGarage]

none while driving. only noticed it when visually inspecting the car. heard from others that you will have some noises when it's really dead tho

[@andrzejtwardowski2795]

478/5000 Hello, I have a tremor of the engine or maybe the 8HP40 gearbox. Occurs in the morning with a cold engine or gearbox, when the reverse gear is engaged "R". Shaking or vibration is also felt during acceleration. I checked the rubber mount of the gearbox - it's ok. I'm thinking about replacing the engine mounts. However, today I checked that I have a damaged rear differential rubber bushing with this number: 33 31 6 792 872 Can this type of vibration be the reason for its damage? Regards

[@whateverrrrrr123]

How many guibo does it has?

[@BONDGarage]

just 1

[@whateverrrrrr123]

@@BONDGarage is there anything connected between the rear diff and the shaft?

[@ShowMeWhatINeedToKnow]

This looks like a royal pain

[@BONDGarage]

it is. and I'm about to do it again. this time also the smaller bushings at about 115k miles.

[@Sequel7]

How many rear differential mounts are needed?

[@BONDGarage]

I only changed the big one on the rear side as that is the one that usually gives in. There are 2 smaller diff mounts on the front side. Haven't had to change those yet though.

[@Sequel7]

@@BONDGarage ok thanks where did you get the rear differential mount extraction removal tool kit?

[@mryoshi4631]

Would you be willing to install for me? 😊

[@mryoshi4631]

Or will you be willing to rent the bushing tools?

[@BONDGarage]

Sorry I'm so late but I've already separated from the tool

[@M-1453]

you do not tell everything in detail!

[@BONDGarage]

What's your question?

[@M-1453]

2:07 at disc there are 6x screws. did you use only 3 of them or all of them? on old ones there are 3x hexagonal and 3x torx screws on it. if you remove the exhaust, the screws and gasket have to be replaced!

[@BONDGarage]

@@M-1453 since the bolts on the flex disc are "stretch bolts" you need to replace them. replaced them all with hex bolts. those are the only ones you can order on bmw parts pages. appears that they unified the bolts. regarding exhaust, I reused all bolts and nuts that hold the exhaust in place. there is no gasket after the post cat so nothing to replace here. I live in an all year dry area so my cars' underbody is in great condition. depending on the climate your car operates in and it's age, you may have to replace certain bolts or nuts when they are heavily corroded.

[@M-1453]

@@BONDGarage well explained respect. i ordered from febi bilstein disc there are also 6x hexagonal screws. but i asked bmw and they said only 3x hexagonal screws and 3x torx. but i have 535xd diesel 2016 maybe it is different with diesel

[@M-1453]

@@BONDGarage how long did it all take you to finish

[@OnTheGoTiresandBrakes]

Too much talking not enough working