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#1
01-10-2018, 04:08 PM
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Quote:
Awesome. Thanks for that wicked link. I will be changing at least 1 solenoid too then, hoping that solves all issues. I have a leaking sleeve and X case actuator seal. Smh. So I'm gonna change the gear wheels while at it since I don't know if they were ever done. Even tho I have no issues or trifecta lights. Sent from my iPhone using Tapatalk
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Black on cream 04 4.8iS Black on black 330i ZHP auto Imola on black 01 M3 
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#2
01-11-2018, 03:48 PM
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Yes, that is a very interesting thread, and I don't even have a ZF transmission in my X5.
From that: "Why was his invention so important? Well, in ZF’s case - compared with the 5-speed 5HP24 unit that it replaced - the 6HP26 had 29% fewer parts (down from 666 to 470), was 44mm shorter (reduced from 697mm to 653mm) and weighed 12% less, despite its higher torque capacity and increased ratio spread. Most of the world’s OEMs switched to 6-speed transmissions as a result." I hope the guy made a lot of $$ from that great invention.
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2001 X5 3.0i, 203k miles, AT, owned since 2014
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#3
04-14-2019, 11:29 AM
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Alright guys I'm in a similar position as OP. I was having trouble trying to find the fill plug on my 04-06 with the GA6HP26Z transmission, XDrive etc...
I just finished up doing the mechatronic sleeve and the other rectangular sealing gasket that goes around the valve body, put the pan back on with new filter and saw this thread, started filling up the transmission through the larger pan hole that's recessed in, I found a channel to slip the tube in to and pumped ~2.5 L of lifeguard 6 in there and it started flowing back out. That can't be a complete fill. The only thing took off was the pan/valve body for mech sleeve service and put back together. I didn't track how much fluid came out unfortunately. I don't want to turn it on with low fluid, any suggestions on how to proceed. I've heard folks talk about a "pressure pump" to do this. Let me know what you think thanks in advance for any ideas guys. Almost done with a 5 month project to keep my 4.8is alive.
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#4
04-14-2019, 11:51 AM
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05 Transmission filler plug location HELP
Quote:
Negative. Fill hole is on the side. Passenger side of tranny. Towards the back iirc. You fill it till fluid runs out. Cap it. Start the car run thru the gears real quick while standing on the brake. Back to park, monitor fluid temp and continue to fill. Iirc to correctly read level temp must be between. 35-40c. Something like that. Then once it's in that temp range and running, fill till fluid is leaking out the fill hole again. Then stop. Plug. Done. If the fluid temp is outside that temperature range the level reading may be incorrect. Sent from my iPhone using Tapatalk
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Black on cream 04 4.8iS Black on black 330i ZHP auto Imola on black 01 M3
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#5
04-14-2019, 05:13 PM
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 Not ALL fill plugs are like that - mine certainly isn't. Some ZF 6HP26 transmissions have the fill hole in the pan - and no fill hole on the trans body. The folk talking about filling the trans from the larger hole in the pan are correct (for those with a ZF 6HP26 of this type).
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) 
Last edited by wpoll; 04-14-2019 at 08:49 PM.
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#6
04-15-2019, 02:30 AM
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That may be the case, but I'd bet his 4.8iS has in on the side. Sent from my iPhone using Tapatalk
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Black on cream 04 4.8iS Black on black 330i ZHP auto Imola on black 01 M3
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#7
04-15-2019, 03:49 AM
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Quote:
I put mine in the air and put it in gear while filling then cycle thru the gears till full at temp and do fill level checks after driving and let it cool down to 40-50. I could probably get away with it at air temp over here to be honest but touching pavement here is as dangerous as cooking bacon naked. Sent from my SM-A730F using Tapatalk
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"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course
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#8
04-15-2019, 05:54 AM
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Quote:
 From here... https://www.thectsc.com/bmw-6hp26x-t...-steel-oil-pan If the pan is plastic, then the trans will have a fill port on the trans body...  https://www.thectsc.com/bmw-6hp26-%E...vel-procedures Seems there's a bit of variation in what is fitted to what... 
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01)
Last edited by wpoll; 06-17-2025 at 12:33 AM.
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#9
04-15-2019, 06:21 AM
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05 Transmission filler plug location HELP
Quote:
Well, my 04 4.8iS has a steel pan and guess what, there's a fill hole on the side. So there's that. I think most 4.8iS have the side fill hole. Sent from my iPhone using Tapatalk
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Black on cream 04 4.8iS Black on black 330i ZHP auto Imola on black 01 M3 Last edited by snik; 04-15-2019 at 11:02 AM.
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#10
04-15-2019, 09:04 AM
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Quote:
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2006 4.8is, Black on White. SOLD Sniff Sniff. 2017 F85 x5m, Black on Red. BEAST MODE "The older we grow the greater becomes our wonder at how much ignorance one can contain without bursting one's clothes." - Mark Twain Unlock OBC post 5
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