ZF8HP70 Teardown
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- čas přidán 28. 08. 2024
- In this video, i teardown my first ZF8HP70. In this trans there are clutch packs A through E and 4 planetary gearsets, pump on this trans is chain driven. Thanks for watching. Hopefully more on 8 speeds in the near future.
I’ve worked on my own cars for over 30 years, and every time I watched you pull yet another stack of gears out of this transmission, I gasped in horror at how utterly impossible it would be for me to reassemble something like that. Your work amazes and terrifies me.
Transmissions is in a class all by itself, thanks for watching
Lol
It looks complicated, but it used planetary gear, so it's different from what traditional automatic transmission , I won't say it's simple, but it's not as difficult as they used to be, and Gary please don't come after me, 🥰🥰🥰, and also i think it's the best automatic transmission since the invention of automatic transmission.
Can’t wait to do this to my 2012 Rubicon! Saving and rewatching all this and making all the list of goodies!! Awesome! Put a smile on my face when you gave a little push, and that sound ---Woooooohoooo! 😂
5 years old but this is perfect for me. Need to swap new trans parts into a repaired case.
I'm just a hobby mechanic but despite the extraordinary complexity of that transmission (which I'd never meddle with in a million years), I learned something for the very first time EVER about the way in which clutches work i.e. the inner and outer teeth of the individual clutch rings. Thanks!
Thank you for watching, please subscribe.
@@GaryFerraro when maybe not fully warmed up and the car has a higher than usual passenger weight is it normal for to get drivetrain message on dashboard?
i think it's the best automatic transmission since the invention of automatic transmission.🥰🥰🥰
Maybe put the tail piece, extension housing, back on it after removing the seal, snap-ring, and spacer. That way you can set the transmission into a pan that's on the floor. That'd be way better than climbing up onto the table itself.
Excellent Teardown videoGary.
Had to laugh at your standing on the table to pull the drum out. I may have to do the same thing. I have a core here that I am going to go through.
No wonder these are so good. Big pistons, and clutch packs. Simple design and over built.
Yea ? Mine failed at 150k km . Made iron dust from one of those packs of "discs"/"small clutches?" Or how are they called, the iron dust got everywhere ruined the torque converter the oil pump and hopefully not the mechatronic. Keep in mid guys change the oil at a professional always and more pften of you drive in the city than if you drive on the highway.
@@Razvan528 You got 150,000 miles and are complaining? Most automatic transmissions need rebuilt or replaced around 100,000 miles
Mine failed at 150k km . Made iron dust from one of those packs of "discs"/"small clutches?" Or how are they called, the iron dust got everywhere ruined the torque converter the oil pump and hopefully not the mechatronic. Keep in mid guys change the oil at a professional always and more pften of you drive in the city than if you drive on the highway.
Good... you good...
Hey Gary I have an 8hp95 and I’m not getting any transmission codes but the car when racing doesn’t want to shift past 4th. It bounces the limiter and I have to manually shift it
Gary, any chance you can upload a 1080P version of this video. 360P is outdated by roughly 20 years! Appreciate the information.
sure next one I get, I upgraded my PC since. Sorry about that
Hi Gary, We have a BMW X6M with a GA8HP75Z. ISSUES WE ARE HAVING IS A FLAIR UP BETWEEN 3RD AD 4TH, CAUSING THE TRANS TO SLIP AND GO INTO FAIL SAFE MODE, IF I MANUALLY SHIFT THE CAR 1-2 2-3 3-5 5-6 6-7 7-8 ALL GOOD. JUST A ISSUE BETWEEN 3RD AND 4TH.
TRANSMISSION FLUID LEVEL IS GOOD. MILEAGE ON THE CAR IS 51,728. CAN YOU GUIDE ME IN THE RIGHT DIRECTION.... NEW TRANSMISSION FROM BMW IS $11,500. OUCH
THANK YOU
CHARLIE HITCHCOCCK
MY NINE ELEVEN SHOP
WOODSTOCK IL
Does this flare all the time? have you tried clearing the codes and resetting shift adapts?
@@GaryFerraro YES, CLEARED THE FAULTS RETURNS. ITS THE ONLY FAULT IN THE EGS SYSTEM. I HAVE BEEN TALKING WITH ZF, WHAT THEY ARE TELL ME IS ITS A D CLUTCH ISSUE. THEY HAD ME GET THE TRANS FLUID HOT 80 C TO 90 C PUT THE CAR IN R. TO CHECK FOR A TRANS SLIP. WHAT HAPPENED IS ITS A DELAY INTO REV. ONCE ITS AT 1,500 RPM ITS FINE. IS THIS SOMETHING I CAN SEND YOU FOR A OVERHAUL, I'VE FOLLOWED YOU ON YOU TUBE AND YOU HAVE HELPED ME WITH TRANS PROBLEMS. I WAS PLANNING ON CALLING YOU FRIDAY 6/26/2020
THANK YOU FOR YOUR TIME,
MY NINE ELEVEN SHOP
1019 RAIL DR
WOODSTOCK IL
60098
815-236-5489
Like your videos keep it coming...
Thank you Can't find your other post's
Dear Gary, great job, congrats! I have a GA8HP45Z and after put in D from P when is cold an stay with foot on brake (in every morning, but specially below 10 degrees Celsius) is sound like a noisy broken flywheel and car vibrating ! Some recommendation for me what to check or change? One technician from service tell me is necessary to change torque converter, but i'm not sure is right! Best regards.
so when the car is hot no noise or vibration?
To replace the output shaft bearing will the whole transmission needs to be disassembled? I’m getting a noise, vibration and leaking oil from the seal and the shaft has some play
Seems like some of the clutch's are huge compared with the 4 speed auto's?
Question about ZF8HP55:
What is the operating temperatures of the OEM oils that are in these ZF8's?
Example, G 060 162 A2
Oh i would say 200 degrees My rule is anything above 130 is to hot
Mine 2017 jeep grand cherokee and I have clunk in transmission when start up, and no other problems
do you mean going from park to drive? you have the ZF8HP70?
When start up at (P)
Yes zf8h
@@mhr40 What does the noise sound like? Have you had it looked at to confirm transmission?
@@GaryFerraro its the parking pin, make sure you use parking break on neutral, wait till the parking break fully stops the car, then put it in park. when starting, hold the break, swtich to reverse and then while your right foot is on break release parking break. should solve it, also adjust your parking break spring helps too. if that doesnt help then i dont know...
Tell me, if a car equipped with a ZF8HP gearbox goes down a hill and the gas pedal is fully released, then the gearbox will hold the gear in which the car started to go down the hill or will it shift to a higher one and at what engine speed?
Nice video. One question Gary, how strong is the park mechanism on this gearbox? Is it just that rod that locks into the parking ring that holds it in place? or is there some kind of extra support? Thanks
There is a rotating lever with a spring that holds it in park as well(pretty strong spring too)
Beautiful video man. Honestly. it's like you innovated that :D
I'm still trying to figure out how many litres of lifeguard 8 fluid to buy to completely refresh mine...some say 7L is enough and some say more
I was told by my transmission guy that 6.5L is enough for a pan drop.
Apparently you need like 16L to do a full flush, if you're pumping it all through. It takes a while to wash out all the old fluid
@@johnadamczyk6213 Seems like a waste of $48/liter fluid, but have at it as you wish. ZF says a pan drop and fluid top off is all that is needed every 62Kmi.
Is it true that these transmission's require nothing more than a Dexron 6? Same as the 6l80's 6l90's etc?
Oreilly's for example has a "World" fluid that supposedly covers Audi's and their 6 speeds in their Q5' for example.. it's a Dexron 6 but the supposed requirement is stated to be a "special" fluid like this one. I did a fluid exchange on a 09 Q5 ZF 6 speed using the World fluid. Had no issues..
just looking for confirmation before I do a fluid exchange on my 8 speed
everythingmoto technically it is dexron6 but the official fluids have some additives for long life or something
I think he is the creator of ZF8HP70
Thanks for watching Adi, please subscribe
Hi. I was changing my pan on mine and it broke off a couple tabs from the black plastic in the valve body. Will this cause any issues? Thanks.
My Maserati Ghibli SQ4 has the ZF 8 HP 70X.
Thanks for the info.
شكرا
is it bad putting it in neutral while going down hill at high speed ?
That’s a REALLY bad idea for 2 reasons.
1. That is horrendously unsafe to do as the only thing that will be helping you stop are your brakes, under normal drive operation the engine actually helps slow your vehicle down along with your brakes. With all that load 100% on your brakes they could seize or even be insufficient at stopping all that force.
2. You never want to shift an automatic from neutral into drive while moving as that puts awful stress on small parts of the transmission that could easily break, which if you’re going downhill you’d have to wait until you reach a complete stop to shift back into gear to not risk breaking any of the fragile components that are put under major stress. A fully manual transmission does not have this issue BUT is still a horrendous idea because of point 1 - it’s incredibly dangerous.
I heard that this transmissions have no history of"" Whining noise "" well mine does !! When hard accelerating but no other issues , any idea do I should worry ? Fluid was replaced at 100k miles at 105k was level checked at 115k Miles start making the noise right now has 117k miles
Do you hear the noise in park and neutral?
360p resolution only ? This interesting video would have been even better in Full 1080 HD, or even 4K. But thanks anyway.
AlainHubert When I save the video there is a heading for you tube. Guess not in HD. Sorry will upload in HD
@@GaryFerraro
Thanks for the quick reply. That doesn't take anything away from the great technical content of the video though. Thanks for sharing.
It's really, really good to hear and learn by watching your videos. Could you say how I can get the assembly scheme for this 8HP70HIS automatic box? Thank you very much Gary.
Where are you located?
@@GaryFerraro hi Gary, I'm located in Portugal, Europe.
@@AlexandreOliveiraAlex Ok, Greetings from New York. Are you looking for a manual that shows disassembly and rebuild?
@@GaryFerraro Hi Gary, yes I'm looking for manual. Thank you soo much also for your correspondence... admire your patience to this... I will try to summarize the situation. I recently purchased a BMW 535d N57 D30 from 2011, VIN C587103 with 100k km. with precisely that automatic transmission ZF 8HP70HIS, for reasons of preventive maintenance I asked to change the oil in the box supposedly by a specialist, the fact is that the box looks strange! In low ratios it makes a small delay and jolt in the passages and in low rotation until 90 km / h when lifting the foot of the accelerator, after accelerating again it seems that it chokes. suspect the box has a problem. I also don't want to leave the car at that "specialist" again for fear of causing even more problems. I am convinced that he does not understand anything. As I am passionate about this type of technology and this engineering fascinates me... I saw in your videos, I understand by watching it in your videos you know what you are talking about ... then ask to try to understand what is going on. in the first case it seems to me that the oil replacement was not properly performed, also he didn't perform a second oil level check ... anyway... greetings from Portugal too... and courage with the situation C19 there in NY. Protect your self...
@@AlexandreOliveiraAlex The first thing to do is make sure the trans is full of fluid. Do you know anyone with a scan tool because what i would try to do is reset shift adapts and drive the car for a few days to see if anything changes. There cannot be any codes present in the transmission or engine or the adaption may not work.
a surprisingly simple transmission
nice trans to work on, not bad at all
I’m looking to swap this trans into my vehicle can a 2wd be changed to a 4wd by changing the adapter cover in the rear? Or is it more things that are different between 2wd and 4wd
hello all right Gary I have a question about the ZF transmission the 8hp70X and the same 8hp70z, thank you in advance
ok, will try to help
Thanks for making this video. I’ve been curious to what drives my 1500 ram. I have little question. Sometimes when making a quick or sudden stop, and at a complete stop, my transmission feels like it still trying to push the truck; like maybe it’s still in gear or something. It’s not all the time, and I can totally live with it being like this; but I’m wondering what’s going on in there?
Did you ever find out what was wrong?
Does your truck have Tow/Haul Mode?
Great vid. Quick question. My 2014 Ram v6 starting bucking and basically lost drive. Will creep along if you rev it a little but when the rpms start to drop it will grab and buck hard. Pulled the pan and there’s gold and silver shavings. Had a cheap pan/gasket on there that I believe failed and allowed shavings into the trans. Is it possible to clean out most of the shavings without dissembling? Also, any luck with Lucas stop slip?
Thanks!
@@sunshinestate1306 No Lucas or stop leak. Does this drive cold and loose drive hot?
@@GaryFerraro nope. Won’t drive at all right now cold or hot. Driving fine one second then slipping in and out of gear and bucking when it caught. Before this happened it did have a thing where if you threw it in gear immediately on a cold start and tried to drive, it would take more rpm to get it to start moving but drive ok. If you idled for like 5 sec it would take off as normal.
However reverse still functions normally
@@sunshinestate1306 Did you ever find out the problem with drive slipping but reverse still functions? I starting having this issue today.
price on what a job like this would cost? i have a zf8hp45
great video!
brother that car brought that transmission
Hey Gary. Thanks for the video. I'm gunna be doing the zip kit in my 70. Do you know the part number for that body to case square seal? Really like to change it while I have it out. Google only returns a seal/grommet kit for 6hp28.
If your talking about the bridge seal, this trans does not use one
@@GaryFerraro ahhh ok. I thought all the zf's had it. Everytime u spun the case around I couldn't see it. I guess that's why I didn't see it lol. Thank you
@@Matp345 Np problem
I have a 2016 Dodge Charger with the 392 hemi and with the ZF 8hp automatic transmission and when I'm taking off 1st to 2nd there's a delay then it goes into 2nd, all other shifts are smooth. Also when coming to a stop I have to wait 10 seconds for the transmission to go into 1st gear. I've taken my car to a Dodge specific shop and they changed the trans oil and filter but problem still continues. Please help.
Sorry for late reply, I just found your post. Before you do anything, I would reset shift adapts to see if that changes anything. Do you know someone with a scan tool
Is there a vent on this transmission or is it completely sealed?
For BMW transmissions, where do you get the overhaul kit ?
May God help you when tearing into one of those.
My front seal is leaking on my 8hp70 no other issues as of yet I was wondering if I could change the seal without removing the pump from the video it looks like it but I'm not quite sure just wondering if you could confirm and if not what are the torque specs on those aluminum pump bolts
You can change the seal, just have to pull out torque converter
great video, do you a video on putting it back? I trying to put mine back in but have a hard time with the parking break.?
I do not have an install video, sorry
@@GaryFerraro thank you
@@YScy-gx6jq Welcome, thanks for watching.
Do you happen to have a part number for the megatronics sleeve? I have to replace mine
I have AUDI SQ5 2015 with 155000km.
The transmission is not smooth... specially when the gear goes down ... and if I'm pushing the gas pedal down to kick down and it goes 2 or more shifts down I'm getting a hard "hit" in the gearbox...like BOOOOMMMM .. sometimes the gear goes immediately back to the upper gear ... for example goes from 6 to 3 when I push down the gas pedal... andddd BOOOMMM it goes to 3 and jump back to 6.
There is another thing: when I take turn left or right into a street... sometimes the gearbox going like into "neutral" feeling safe mode or somthing...the gear jump for a second and and after one second come back to "NORMAL.
some one had this issues? ZF 8speed SQ5 2015
sounds like it is low on fluid, falling out of gear on a turn is a classic sign of low fluid
@@GaryFerraro thank you very much... I will check it. But the question is... if to change oil and filter ?
does this have a plastic pan? If it does the filter and pan is one, make sure you get OE Only, no aftermarket with this trans
my bmw 320d f30 xdrive, I have a problem, when it changes from 4-5-6 it slips, what do you think could be? Tanks for video .
You have the 6 speed trans?
@@GaryFerraro 8 speed
How similar are the 8hp vs 6hp Gary? It seems as if this will be a direct swap in older vehicles with the 6hp26
The 6 speed and 8 speed units are different, the pump on the 8 speed is chain driven, 8 speed also uses molded pistons
38:29 where do you get those bolts from and the other 6 little ones?
Okay, but what was the issue with the gearbox?
Why it was dismantelled?
Had to rebuild this for higher horse power, i do not remember if anything was wrong
Is it necessary to "reflash" the ZF 850re transmission after an oil change or flush?
No it is not, just did one here.
Excellent, I Follow Your Videos, Thank you. My job is also related to transmission repair, can i contact you about work questions? Of course, if you want.
my e-mail is gsferraro@yahoo.com
@@GaryFerraro Thank you Gary, best wishes to you.
Never been a big fan of aluminum bolts.
agree with you on that
Hello,how many nm mechatronics bolts to gearbox? this large and small. thanks
Small 8 NM Large 10 NM
In the ninth minute. Which screws should I unscrew to remove the mechatronics. They are different? Thank you
All the torx 40 (i believe is the size) have to be removed to lift off the valvebody
there are smaller and these with size 40, right?
@@renatoc.1235 yes smaller is T27 i believe, they hold the valvebody together
@@GaryFerraro very nice. Are you from Italy?
@@renatoc.1235 My Grandparents were, i was born here in NY
do you have a part two where you put it all back together?
I do not
Hello, may I ask you for values of diameters of the special tools, fitting to the aluminium drums? I see there are four rings in the case.
I use a foot press to get the snap rings out. What time in the video did you see the rings?
@@GaryFerraro May I write You an e-mail? It would be better I think
@@michalnytra9800 sure
Gsferraro@yahoo.com
Hi great video Sir. I have a 2017 Dodge Challenger 6.4L Scat Pack 392 with the automatic HP70. The car was very mildly modified and at only 6,000 miles the HP70 went and the reason code was 5th gear failure. Dodge said they didn't know the reason but the fluid was very badly burned and they refused to warranty it because they said I modified the vehicle. My only choice was to buy a brand new HP70 because they said these units can't be repaired and have to be replaced which obviously now I know isn't true. Do you have an opinion on what might have happened? Thank you Sir! Subscribed!!!!
@Jason Lowder thanks for the tip, i still have factory warranty left on my wife's Caravan. How the hell did they know he drove it for 2k? DTC history?
Hey Gary i got a zf8hp70 that I put a zip kit in and had a p1B14 code on it and thanks to your video got it out of that by putting some more fluid in it. But now I got a p0850 code got any advice on that?
What is the Definition of that code
A P0850 diagnostic trouble code means that the computer is not sure whether or not the transmission has been shifted into a neutral gear. This can affect the drivability, and prevent the four-wheel-drive system from engaging.
@@stevephillips1571 If you clear the code does it come right back? Do you have a scanner that shows live data?
Yeah it comes right back as soon as I try and start it. The p1b14 actually became a permanent code. That's another question is it possible to clear permanent codes? The scanner tool I have is a obdlink mx and alfaobd2. Not sure if your familiar with that interface and software for a scanner or not. I'm just learning myself. Again any advice or help you can give me is greatly appreciated. Thanks again.
@@stevephillips1571 Permanent code is a hard code, won't clear, So when you start the car, the code comes back when you shift try to out of park?
Hi sir...how much your charge for this job....thanks....
Tree fiddy
Dan P what do you mean (fiddy)
Hi, folks. My Ram have a problem. When i stop and my transmission change second to first gear, this change is not softly. Is subit and i can ear a clunk . Please, why happened this unconfortable thing? Thanks.
How does this upshift from 1st to 2nd? is your engine revving a little on the high side?
@@GaryFerraro My ram is six cilinder, mod. 2014. This clunk is when i stop . Second gear change to first gear and in this moment this change is hard and accompained with a clunk.
@@GaryFerraro Upshit from 1st to 2nd is cool and soft. The problem is when i stop and the change is from 2nd to 1st. is abrupt
Daniel Ramos Tarango sounds like a problem with the C clutch Either the solenoid is no good The accumulator damper is flat or the C clutch is no good meaning it may be worn and now the pack has to much clearance
Many people complain about that on the many forums, my 14 charger does something similar since i got it with 18k km on it, even after having the valve body replace for slipping during 3-4 shift at 30k km. It's more prononce when I come to a stop then 2-3s later it shift back to 1st and if i'm not hard enough on the brake it kick forward...
I JUST REPLACED MY TRANSMISSION ON MY BMW 328XI GT AND TOOK IT TO BMW TO GET IT PROGRAMMED, THEY ARE SAYING ITS PROGRAMMED BUT WONT GO INTO GEAR. WHAT COULD THIS BE FROM? TRANSMISSION WAS USED W 6K ON IT.
The tcm is in the trans, when you say it won't go into gear do you mean it will not shift? What codes are present
@@GaryFerraro YES BMW of Daytona has the car for a week now claiming they reprogrammed the tcm and it wont shift. i do still have the old Tcm in my original transmission. would you suggest me switching them? Im just not seeing how BMW can reprogram it and still not get it to work. they didnt give me any codes present.
@@johnartis5186 Is this in fail safe or stuck in first gear?
@@GaryFerraro its in park but, i did engauge the neutral switch
IS THE TCM REPROGRAMMABLE ON A 2015 BMW 328 XI GT? OR WILL MY OLD ONE WORK IF I SWAP IT OUT?
I have a 2014 Dodge 4x4 with the hp70. Problem I'm having is under normal driving it feels like it keeps downshifting slightly every few seconds, the RPMs raise and then drop but it's fairly constant, any ideas?
Any codes present, engine or trans?
@@GaryFerraro no codes, that's what's got me stumped
@@bifftannen3167 is it only a few hundred rpm fluctuation
@@GaryFerraro yes, constant back and forth, like it's going in and out of overdrive slightly
@@bifftannen3167 If it's a few hundred rpm, 200 to 300 you may have something going on with the converter or the circuit
Which solenoid is responsible for stopping. I have small jerk (not always) when stop the car. My gearbox is 8hp70z from F85. Thanks
is it a 2-1 downshift?
No only when completely stop. After about 1s. My gearbox hasn’t got creep mode as its for X6M.
@@masakielbasa89 If M series you have the ZF8HP75, Any codes? have you had it scanned?
@@GaryFerraro yes you right its GA8HP75Z, no any codes, gearbox working very well apart of stopping, i think one solenoid is responsible but not sure, thank you very much for help!!
@@masakielbasa89 So you have no creep mode in drive or reverse, that is the issue?
Wow! Great video! I have a ram 1500 with this transmission in it that’s having problems that no one around my area can seem to diagnose. I’m from Mississippi and the ram dealer of course just wants to sell me a new transmission. But when the truck is cold and I start driving it, the engine surges about 200-300 rpms faster about every 10-15 seconds until the transmission gets to about 160 degrees, also it has a shutter to it when climbing hills, especially at lower rpms and when towing a trailer. It has 110k miles on it and I’ve changed the trans fluid with zf fluid with no change. Also there are no trouble codes with engine or trans. I recently had the ram dealership completely update and reprogram the computer with no change. Is there anything you can suggest for me to check or do you know what could be causing this or how to fix it? I first noticed the surging when warming up would go away around 120 degrees but has gradually started taking until operating temperature to go away but it just recently started shuttering. Any help would be appreciated. Thanks.
Is the trans actually slipping or flaring on the shift?
@@GaryFerraro It’s not really slipping, just shutters mainly when it gets a load on it like pulling up a hill or after stopping at a light or stop sign, but it also seems to do it right after a shift as well while gaining speed. I don’t ever notice the slipping/shutter when driving on flat ground at speed, only on hills or gaining speed from a stop. Didn’t know if maybe it could be just the torque converter or not? Oh and also when I first noticed it, I took it to the dealer at around 75k miles and asked about changing the fluid and they told me it was lifetime fluid so not to worry about it, but now it’s getting too annoying to ignore.
@@myshooter44 I don't believe in the lifetime fluid, something like this i would change every 50 to 60K, may want to try that first, can possibly be converter shutter that your feeling
@@GaryFerraro I did change the fluid at around 109k miles and the shutter went away for a couple hundred miles, but I’ve put close to 1000 miles on it since I changed it and everything’s acting just like it did before I changed it. Engine surging when cold never went away after changing. I hate to rebuild trans if it’s fine and the torque converters the cause, likewise I hate to replace the torque converter and it be the transmission, and I sure hate to spend a bunch of money guessing what needs to be done to it, especially doing the torque converter and rebuilding the trans.
@@myshooter44 The vidration that your feeling does it feel like going over railroad tracks or washboard? or is the transmission flaring on the shift
Thanks for the great video! Please please could you perhaps help me? I am always getting -700 mbar clutch E fill pressure after adaptation. I cannot find anywhere an information if this is outside of the allowed pressures. My 8HP55 transmission when the fluid temp is over 70-80 C, jerks slightly always before shifting 1-2 and 5-6. Very very slightly 2-3 and nobody can help me. Not even ZF official repair shop. Mechatronics has been checked and entire transmission rebuilt with new parts. No one knows why it jerks :-(
ok, what was done to the trans, and did this start to happen after any work was done? what type of vehicle?
@@GaryFerraro Hi Gary. The car is Audi A6 2013 Bitdi 313ps. Before the trans was sliping 1-2, 2-3 only when cold, first few kilometers. That was the only single problem, no jerking, smooth shifting as butter otherwise. It has 245k km. ZF repair shop opened it and found out that the fluid was never ever changed and oil was burned dark. They had to replace all clutches, oil pump, clutch baskets, planetary gears, torque converter. All together over 6000 EUR in costs. Mechatronic was completely refurbished (new solenoids as well) and tested fully OK. All was put together and when I got it back it is making the following: 1-2 at around 1800rpm and around 50% power it jerks and then the rpm continue and it shifts by 2000rpm. Very slight almost non existent jerk 2-3 around 1800rpm and then shift at 2000rpm. 5-6 the same however the jerk is slightly less prominent than 1-2 jerk. 1-2 jerk strength depends on the situation and the speed how I try to accelerate. With more gas power it jerks 2000rpm stronger and shifts lets say 2300rpm. However when I give it even more power or manually try to shift above 2200 rpm it does not jerk anymore before shifting and the same when I give it quite slight gas pedal, it is smoothly shifting. The fill pressure figures after adaptation for A, B, C, D clutches are fine, however clutch E ends up always -680 or -700 mbar. ZF say it should be OK however I read in Audi service manuals for 6HP which can also be used for 0BK/8HP tiptronics as of adaptation, that the correct value should be -400 to 400 mbar. But noone can confirm this. Perhaps 8HP has wider allowance of pressure levels. Right after the adaptation the jerking does not happen. I always do full adaptation - at least 6x clutch adapts and 3 times fast fill pressure adaptations so the shifting is smooth. The jerking starts lets say 500km after the adaptation and is prominent when the fluid is hot and almost non existent when little warm or cold. Very very slightly I can sense a hesitatiom at those 1800rpm when fluid is cold. Mechatronics was checked 2nd time after the rebuild of entire trans and found 0 issues. There are also no error codes. The SW version stayed the same as before when the trans was not jerking even though with burned fluid and heavily used internal parts - H16 1006. So it must be something which was replaced by new parts. Or could it be the new ZF original totque converter with some kind of production error? No one knows what is causing the jerks before shifting 1-2 and 5-6 mostly. It makes me
frustrated because the rebuild took 3 months and the 2nd mechatronic check another 2 months and cost a lot of money. I would appreciate any idea, which might help me identify the issue. Perhaps even after the full couple hour adaptation I should drive 1000km with very light gas? Thanks!!
Ok. Want to check out some info I have at home.
@@GaryFerraro Thank you so very much Gary, truly appreciate this.
So you have a problem in 2nd and 5th
Those who hate the compressor should ask for a refund............lol
Hi Sir Please Answer , i have a Bmw m550d Xdrive (all wheel drive) f10 2012 with ZF8Hp70, In the last 7 months two times, the car went in to limp mode.It said drive train error, then i stop the car Plug in my Obd And the obd says , these codes 421278 ( output speed sensoe impermissible deviation...)
420411 Monitoring clutch b implausible,,,In 7 months happend two times ,then i delete codes and everything is good. What i noticed is I can feel when the car is shifts specially when cold start, other thing when i go normally with the car and let say going with 50-60km/h and getting to a red light i slow down slowly and right before i stop the ligjt turns green the car downshifts i cannot feel that, but then pressing the Gas no matter how nicely the car is like jumping not smooth(not allways), One other thing when going at certain speed where the rpm
Is very low like 1150-1250 rpm at 60km/h 80km/h some times the car is like Sluggish lagging jerkingnthen i press the gas heavier then its gone only when really light on gas and Low rpm (Please forgive me my english is not good) hope u can help me im clueless what to do dont want to throw out several thousand ..
Have you checked the fluid level?
Gary Ferraro no i havent , but i see some oily stuff around the Filter I will take to garage and let them fill up? Maybe that sorts it? Or a complete oil change ?
@@bmwsincekid I would have the fluid level checked, if low fill it and drive the car to see if problem still happens
Gary Ferraro i will update once it happened
Gary Ferraro im going to zf at 1pm Europe time Will update
Hi Gary
I have an automatic car is doing funny things
First when selected Drive or Reverse it would just jump back on its own into Park.
Now its not doing that anymore.
Now when i select reverse it goes into reverse and as soon as i get close to something it was sound an alarm, but when i select Drive it goes into drive and goes forward . the alarm disappears but the reversing information is still on the dash screen even when i put in Neutral.
Hope i can get some help from you or someone on this chat
Has the car been scanned for codes? was the fluid level checked?
@@GaryFerraro
Just got back from BMW from a Service and they replaced ed the whole bottom part of the gearbox I think it's called the sump
@@GaryFerraro on their invoice it's called the ATF 3
@@GaryFerraro sorry the oil pan was also replaced with the gaskets and screws.
@@vernonsissing7762 it should be lifeguard 8 or mopar 8-9 speed fluid
Nice videos. What mileage do you recommend changing the oil and filter on the ZF8HP? I think the Range Rover manual says 144,000 - 160,000.
They may say lifetime oil, i would probably change it out at 50k miles
@@GaryFerraro What fluid would you suggest? My 392 dodge charger just passed 50k miles and want to keep up with the maintenance
@@MasterGunZ You have the 8 speed trans in there?
@@GaryFerraro Yes sir I do
@@MasterGunZ Go with the fluid it calls for from the dealer
I find it hard to believe that those pump housing/cover bolts are Aluminum.
They are, They are actually torque-to-yield bolts and should be replaced on every overhaul
@@GaryFerraro Yield on Aluminum is around 40,000 psi. Do they ever break off the heads from seizing in place? Aluminum has a propensity for cold welding. Are you sure they are not magnetic/ferrous?
Gary VanRemortel Will Check that but I don’t believe so
@@GaryFerraro When you removed them, they clinked together like Steel and Aluminum does not do that.
Gary VanRemortel No they do not. Pump bolts are the same one of those snapped on me
Is this a good durable transmission? Do they hold up over 150k miles?
Not sure about that, I have been doing a bunch of the ZF8HP90's out of hellcats and Demons, maybe 40K on them. Doing an 8HP45 now out of a BMW X6, not sure of that mileage, it's over-the -counter, will find out mileage. How many miles on your Trans? you have 8HP70?
@@GaryFerraro I'm in the market for a ram 1500 I like the way it looks but I'm told the reliability is crap
Thought I would ask some people more knowledgeable then myself
@@pauls3758 Has the 8 speed trans?
Yeah the one I am looking at has the 8 speed transmission
@@pauls3758Honestly haven't seen to many issues, i'm doing one now, I will find out the mileage and let you know
Can you leave your shop name?
Does this model have brake bands?
No bands on these units
Where You get this drum tool set?
The set was supplied to me by the customer needed the transmissions done, I could find out but I think there is a company in Miami that he bought it from
@@GaryFerraro thanks
@@DlaMajsterkowicza Looked on the box, says GFX 568999
So what is the practical experience with the lifespan of these transmissions?
depends really on how they drive the car, i.ve done these at 40K, and i.ve done a few at 80K. The lower mileage ones where like Dodge chargers, i think they were really getting on the car
5/10 video
The compressor was annoying
sorry can't do anything about that
Зделали бы ещё перевод на русский язык ,так совсем бы поучительно было.
Now I understand why electric cars will take over and put a whole lot of machinists and assembly people out of work. Beautiful piece of engineering, but way too many complications
Yes, Transmissions is in a class all by itself
What does ZF mean?
Zahnradfabrik Friedrichshafen
A German company
I am a pilot too.
@@GaryFerraro what do you fly?
@@JoshHookerJoshhook123 single engine land, have private and instrument ratings, been flying since the 80's
@@GaryFerraro holy crap! I’m just a student pilot here in the states! My profile pic is the first thing I ever went flying in. (Besides the airliners of course)
@@JoshHookerJoshhook123 Good luck, great hobby, got my license at 18, my dad was a pilot too, thats how i got into it, going for your instrument rating after your private?
Very nice Thank you
Give me your eamil please
Fadi Ktami gsferraro@yaoo.com
If you,re gonna do a video, turn off your air compressor
Only in the summer, I need it for the waste oil heater
Oh, you found a better and cheaper video? Cool, go use that one then.
Number phone please gary
you can e-mail me if you like, would you like my e-mail address?