Gearbox Teardown & Refurbish - 6HP28A61
Re: Gearbox Teardown & Refurbish - 6HP28A61
Front diff
Re: Gearbox Teardown & Refurbish - 6HP28A61
So far the Same but it looks like it is the same gearbox,
Rear output diff
Rear output diff
-
- 4th Gear
- Posts: 828
- Joined: Mon Jan 04, 2016 2:26 pm
Re: Gearbox Teardown & Refurbish - 6HP28A61
I'd go by what is on the plate - casting numbers are often inaccurate to say the least. It may well be that the same main casting is used for a number of types of 6HP boxes.
-
- 4th Gear
- Posts: 565
- Joined: Fri May 25, 2018 4:53 pm
Re: Gearbox Teardown & Refurbish - 6HP28A61
I think the answer is that the C6 RS6 'box is both - a hybrid of '26 and'28.
Mechanically it's a 6HP26, and electrically it's a 6HP28.
That's my best explanation for the confusion.
Audi did say at launch that it had an improved TCU with smoother and faster shifts, like the '28.
Nick
Mechanically it's a 6HP26, and electrically it's a 6HP28.
That's my best explanation for the confusion.
Audi did say at launch that it had an improved TCU with smoother and faster shifts, like the '28.
Nick
Re: Gearbox Teardown & Refurbish - 6HP28A61
Jim Haseltine wrote: ↑Thu Nov 26, 2020 10:24 amI'd go by what is on the plate - casting numbers are often inaccurate to say the least. It may well be that the same main casting is used for a number of types of 6HP boxes.
Definitely a 28 just the casting it says 26 when I bought it they didn’t check the tag on the bottom because you couldn’t see it was covered by dirt.
Re: Gearbox Teardown & Refurbish - 6HP28A61
welwynnick wrote: ↑Thu Nov 26, 2020 3:01 pmI think the answer is that the C6 RS6 'box is both - a hybrid of '26 and'28.
Mechanically it's a 6HP26, and electrically it's a 6HP28.
That's my best explanation for the confusion.
Audi did say at launch that it had an improved TCU with smoother and faster shifts, like the '28.
Nick
I think this is very early 08 box just on the casting it’s wrong they are all 28 just like the bmw boxes around that time changed from 26 to 28
-
- 4th Gear
- Posts: 565
- Joined: Fri May 25, 2018 4:53 pm
Re: Gearbox Teardown & Refurbish - 6HP28A61
I posted pictures of the '26 and '28 boxes here:
viewtopic.php?f=47&t=129779&start=150#p942033
They're quite different.
viewtopic.php?f=47&t=129779&start=150#p942033
They're quite different.
Re: Gearbox Teardown & Refurbish - 6HP28A61
This was weird one the bracket for the cooler lines which I thought was torx, then I thought the hole was just filled upon further inspection it’s one of those external torx can’t remember the exact name
Re: Gearbox Teardown & Refurbish - 6HP28A61
That’s not a 26 and 28... a 26 28 look very similar the zf6 family does not look like that that looks like a newer 8 speed out of a c7welwynnick wrote: ↑Thu Nov 26, 2020 4:22 pmI posted pictures of the '26 and '28 boxes here:
viewtopic.php?f=47&t=129779&start=150#p942033
They're quite different.
-
- 4th Gear
- Posts: 565
- Joined: Fri May 25, 2018 4:53 pm
Re: Gearbox Teardown & Refurbish - 6HP28A61
I just checked my photo archive - it's definitely a 28.
It's the 6HP28 and the 8HP that look alike.
Here's another picture of a 6HP28:
And here's a picture of an 8HP65:
The back end of the 28 and the 8HP are also similar, and different to the 26.
Nick
Re: Gearbox Teardown & Refurbish - 6HP28A61
It may well be from the 28 in the B7 3.0 tdi, but none of our c6 gearboxes look like that 28 they alll have different torque converter
Re: Gearbox Teardown & Refurbish - 6HP28A61
This was a bit scary, took all 19 bolts off the transfer case and it wouldn’t budge 116,000 miles all original unopened it was stuck on after slowly working it with rubber mallet it came off but be careful there will be oil still in there and the big metal gasket and the almost circle looking one and the small round one coming off the shaft
-
- 4th Gear
- Posts: 565
- Joined: Fri May 25, 2018 4:53 pm
Who is online
Users browsing this forum: Google [Bot] and 112 guests