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DIY Transfer Case Fluid exchange

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Discussion starter · #63 ·
so I guess you can just let it gravity drain.....but filling....do you have two have a pump to fill it with ?? Can you not top load it with something and fill to overfill??
 
#64 ·
Teddis said:
so I guess you can just let it gravity drain.....but filling....do you have two have a pump to fill it with ?? Can you not top load it with something and fill to overfill??
Click to expand...


Yea but gravity drain will not extract all the oil as the drain is not directly at the bottom, and there is not that much oil in there, but you can def give it a try. Yea pretty hard to top load with much of anything other than a hose. You could try attaching a hose to a jug and squeeze but I do a lot of my own work so the motive power fill was a pretty cheap tool considering it contains the oil and will not make a mess everywhere.
 
#66 ·
In addition to the Motive, there are hand-held pumps/extractors like the MityVac (with the proper attachments) which would suck out the remaining fluid and, in turn, you can use it to pump in the new.
 
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#67 ·
Performed the transfer case oil change today. Big thank you to the contributors of this thread ?.

Here are some of notes from the procedure:

1) I only need to jack the front up to perform the change. I used the supplied Porsche car jack to lift one side at a time and placed jack stands at the additional jack points hidden behind the small access panels. I also placed a small metal plate between the stand and the jack point to even out the pressure across the surface. The plate dimensions were roughly 2.5"×2.5"×0.25".

2) I only got around 300mL drained by removing the drain plug. I then extracted an additional ~200mL from the vent port using a small tube (actually a fuel line from a chainsaw) attached to a 50mL syringe.

I purchased this guy (ABN Automotive Fluid Transfer... https://www.amazon.com/dp/B075NKV4CR?ref=ppx_pop_mob_ap_share) to use for the extraction and refill but the supplied tubing was too big. So I did everything with the small 50mL syringe.

3) As the directions suggest I refilled through the vent instead of the inspection hole even though it would have been much easier to use the inspection hole. FYI, I put in 580mL even though I could not remove quite that much.

BTW, I was very impressed by the build quality I found under the Macan. Lots of aluminum, heat shielding, and very little rust after 32k miles. I wonder if an X5 or a GLE looks quite as impressive ?
 
#68 ·
Thanks to you guys I just ordered the bottle of fluid and two plugs. I only have 13.5K but would like to do it by 20K maybe during an oil change time.
Now it s time to vent, the $##$#! dealer wanted $95 for the quart and $33 per plug. Needless to say it s almost half that price online.
 
#69 ·
Great thread
So after spending time looking at this an thinking about it I did a ton of research and found something that I missed in the course in doing all of my own services
The 40K maintence has the PIWIS read out the "transfer gear wear integrator"
Following up on the PIWIS website I found that if it reads > 145kwh then you change the transfer gear fluid and reset the integrator

Also, Porsche has had a ton of problems with the transfer gear/case and have an updated part number to replace it

I now need to get home and see if the NT510 will read out that value
 
Discussion starter · #70 ·
TtMacan,
I took my cover off to clean it and that enabled a few pics of my new Tcase.

Question, the cable, or conduit in the pic , is that the control cable ? Or added vent now.
Thx

Image


Image
 
#71 ·
Teddis said:
TtMacan,
I took my cover off to clean it and that enabled a few pics of my new Tcase.

Question, the cable, or conduit in the pic , is that the control cable ? Or added vent now.
Thx

Image


Image
Click to expand...


That is the wiring harness. It was internal baffles installed I believe. Also looks like that’s the old part number?? New one has an X I believe. Here is a pic of the vent. Small rubber nub on the right.
Image
 
#72 ·
gmammakn said:
Great thread
So after spending time looking at this an thinking about it I did a ton of research and found something that I missed in the course in doing all of my own services
The 40K maintence has the PIWIS read out the "transfer gear wear integrator"
Following up on the PIWIS website I found that if it reads > 145kwh then you change the transfer gear fluid and reset the integrator

Also, Porsche has had a ton of problems with the transfer gear/case and have an updated part number to replace it

I now need to get home and see if the NT510 will read out that value
Click to expand...


I believe this is measuring clutch wear in the transfer box. If the clutches are worn then fluid will be contaminated with friction material. I would just do it on a regular interval. Better to has fresher fluid in there.
 
Discussion starter · #73 ·
Interesting on the p/n Tt.

I can’t imagine them putting in a old style one ???

I will post a pic of the service report in a bit.....it had a few p/n’s.

Maybe someone can decipher it :)
 
Discussion starter · #80 ·
Wouldn’t that be sweet !!
Were the new ones even around in 2015 though ?..


We need more pics from people who have had the replacement performed to verify this labeled p/n

Step up members ;)


Sent from my iPad using Tapatalk
 
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drawz
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