07-29-2014, 11:49 AM | #1 |
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8HP45 fluid change procedure
From BMW webISTA;
00 11 500 Checking/topping up oil level in automatic transmission (GA8HP45Z,GA8HP70Z,GA8HP90Z) Important! - Do not let skin come in contact with transmission oil and do not inhale fuel vapours. - Wear protective gloves. - Ensure adequate ventilation Important! Use only the approved transmission oil. To set the correct level, it is mandatory that the service function "Transmission control unit: oil adjustment" is performed using the diagnosis system. Failure to comply with this requirement will result in serious damage to the automatic transmission. Conditions for the oil adjustment: - Initial condition: Transmission oil temperature 30 °C to 40 °C - Final condition: Transmission oil temperature 40 °C to 50 °C Important! Transmission GA8HP70Z with N57 engine from 03/2011!! Precondition for oil adjustment - Transmission oil temperature 30°C to maximum 40°C. (The transmission oil temperature must be maintained. This will increase the oil quantity in the transmission.) Performing oil-level adjustment: An oil-level adjustment is necessary for certain fault code entries in the automatic transmission and after repair (e. g. mechatronic replacement, converter replacement, transmission replacement). - Connect diagnosis and information system. - Service function (transmission control unit: Oil adjustment) call up - Carry out oil level check in accordance with instructions Adding transmission oil: Stand vehicle on a level surface and secure against rolling off. Undo oil filler plug (1). Add automatic transmission fluid according to instructions in the BMW diagnosis system. Installation note: Replace sealing ring/oil filler plug Tightening torque: 24 11 3AZ Tighten down oil filler plug using 1. Hexagon socket wrench AF 8 2. Torque wrench 3. Socket AF 8 24 11 Transmission housing, transmission oil sump Type Thread Tightening specifications Dimension 1AZ Transmission oil sump GA6HP19Z / GA6HP26Z / GA6HP32Z M6 10 Nm 2AZ Oil drain plug GA6HP19Z / GA6HP26Z / GA6HP32Z / GA8HP45Z / GA8HP70Z / GA8P70H M16x1.5 M24x1 M18x1 Plastic oil sump 8 Nm 3AZ Oil filler plug GA6HP26Z / GA6HP32Z M30x1.5 80 Nm GA6HP19Z / GA6HP26Z / GA6HP32Z / GA8HP45Z / GA8HP70Z / GA8P70H / GA8HP90Z M18x1.5 35 Nm 4AZ Transmission oil sump GA8HP45Z / GA8HP70Z / GA8P70H / GA8HP90Z M6 Replace aluminium screws; jointing torque and angle of rotation must be observed without fail. 1. Jointing torque 4 Nm 2. Angle of rotation 45 ° Steel screws 10 Nm 5AZ Oil drain plug GA8HP90Z M10 12 Nm 6AZ Heat shield on gearbox GA8HP45Z / GA8P70Z M8 19 Nm GA8HP45Z M6 8 Nm 7AZ Ground strap to body and transmission GA8HP45Z, GA8HP70Z, GA8P70H M8 19 Nm Last edited by catskillclimber; 08-08-2014 at 02:39 PM.. |
09-24-2014, 11:24 AM | #3 |
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BMW 83222152426 or ZF Lifeguard 8. Couldn't find anything else approved by BMW or ZF. There are others that are advertised as compatible (Redline D6 ATF, Ravenol ATF 8HP, Shell ATF L12108) with the ZF 8speed.
ZF spec is TL-ML11B. Oil pan (24117624192) runs ~$150. ZF lifeguard 8 ~$25/qt. |
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11-09-2015, 10:03 AM | #5 | |
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It seems that Item #3 is the fill drain plug. It is pretty high up. It would seem that the location of the fill drain plug is NOT indicative of the fill level. I have a BavarianTechnic cable, but I'm don't think the transmission control unit: oil adjustment is an option on it. |
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11-09-2015, 10:37 AM | #6 |
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The fill plug is up on the side of the transmission and is used to monitor level (with the vehicle running, cycled through R & D, 2000rpm in N for 30 sec, then A/C on, recirc on high). I used a thermocouple sensor to monitor sump oil temp. I verified the factory fill level this way prior to changing.
I had the vehicle in for other warranty work afterward and they verified level was set correctly. I find the BMW/ZF procedure is not all that different in principle from some other mfg auto transmissions. Getting the tech info was more difficult than the mechanical part. |
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11-09-2015, 10:50 AM | #7 | |
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11-09-2015, 12:15 PM | #8 | ||
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11-09-2015, 12:44 PM | #9 |
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The fill plug is the correct place to monitor level in this transmission. The scan tool allows the mechanic to read oil temp via the temp sensor installed in the transmission.
In conversation with ZF the concern about fluid changes centered around using the wrong fluid, incorrectly setting the level, & general contamination. I won't get into the "filled for life" debate other than to say it's not for me. |
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11-09-2015, 02:00 PM | #10 | |
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1. Remove fill plug. 2. Remove ATF oil pan (+ filter) which drains the ATF fluid. 3. Install new ATF oil pan (+ filter). 4. Fill with new ATF fluid (ZF Lifeguard 8) into the fill plug hole. The new ATF fluid would be room temperature at this point. Fill until it reaches fill plug hole? ...here's where I'm in need of a lot of clarification. You'll have to bring the new fluid up to the specified temperature range at this point. ATF fluid is expected to expand so if you filled to the fill plug hole at room temperature, you would expect some fluid to flow out of the fill plug hole at 40-50C. |
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11-09-2015, 07:01 PM | #11 |
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I did a 6 mile drive from stone cold to stir things up then went about jacking and removing stuff. I found access to the fill plug next to impossible without removing the bracket securing the transmission to the frame. The transmission was barely warmer than ambient when I decided to check fluid level. The scan tool would have been handy to read temp before opening fill plug. Started the car and ran through the sequence I mentioned, removed fill plug and insert temp probe. I lucked out and was around 38C. I was getting a weak drip which didn't change much when it hit 40C. Satisfied that I could get the correct level reading I put the fill plug back in.
Turn the car off and start to crack open the drain plug in the pan. You need a decent size pan as the fluid squirts out around the plug. I chose to loosen it but not remove it until most of the fluid drained. I measured the amount of fluid that came out, which in my case was ~5.3qts. Since the fluid level is above the fill plug when the car is not running I used an adapter (M18x1.5 to barb) and filled through a clean hose/funnel. I put back in the same amount I took out. When you start the car it will suck the level down to below the fill plug allowing removal of the adapter and hose. There is a condensate drain almost directly above the fill hole which will drip since the A/C is running. I stuffed an old t-shirt up there to soak up the moisture. I initially confused this drip with a drip from the fill hole. When installing the new oil pan there is a torque sequence (attached) to follow as well as the 10nm tightening spec. Ensure you check the torque on the new drain plug before filling. |
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11-10-2015, 06:22 AM | #13 | |
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My maintenance so far has been: - Oil changes: every 5k miles with either dealer maintenance or Mobil 1 0w-40 (on my own) I'm reaching the 50k mark and I'm reading up on doing plugs/coils at 50k as well as an ATF drain and fill. I requested a quote from an Indy shop for the ATF drain and fill and they said ~$900. I think I'll end up doing this myself. Last edited by Polo08816; 11-10-2015 at 06:27 AM.. |
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11-10-2015, 07:56 AM | #14 | |
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11-10-2015, 08:42 AM | #15 | |
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So when you started the car back up (and engaged the transmission in R/D), the fluid level dropped below the fill hole. You then topped off the fluid level until it reached the fill hole and then put the fill hole plug back in... and called it a day? I'll try to see if the BavarianTechnic scan tool has the ability to monitor transmission temperature... not sure. If it does, I'll post a screen shot. It helps when you have access to an on-post auto skills center. Lifts, air tools, Hunter alignment machines, etc. |
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11-10-2015, 10:51 AM | #16 | |
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Just have to remove the engine coverS! Especially the ones close to the windshield, you also want to remove the cross bar... The preparation step is the most time consuming (the first time around). Plugs to be changed at 30k for 328i and 60k miles for the 335i The coils will be expensive and i believe you can do them much later at 100k. Be sure to get the thin wall plug socket. |
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11-10-2015, 05:14 PM | #17 | |
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http://www.realoem.com/bmw/enUS/part...&q=83222289720 |
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11-10-2015, 06:16 PM | #18 |
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http://www.xaturbo.com/collections/h...-044-fuel-pump
Depending on your tubing you may want to cut off some of the barbs so the hose doesn't kink. I snaked the hose up past the engine making sure to avoid the exhaust piping. Go Navy.... |
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11-11-2015, 05:17 PM | #19 | |
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BavarianTechnic Screenshots
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11-15-2015, 04:45 PM | #20 | |
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Here are a few pics (with a few questions): Is that circular protruding thing the fill hole? (http://www.realoem.com/bmw/enUS/show...diagId=24_1144 it seems to be Item #3) There seems to be an identical circular protruding part on the other side (exhaust side).. Now what the heck is this... it seems to be a "screwed actuated lever"? |
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11-17-2015, 10:46 PM | #22 |
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[QUOTE
Now what the heck is this... it seems to be a "screwed actuated lever"? [/QUOTE] The " screw actuated lever" is for emergency Park release. To allow rolling vehicle when there in no battery power to disengage Park or malfunction that prevents normal disengagement. |
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