View Single Post
  #2  
Old 06-06-2016, 12:36 PM
Zulfiqar Zulfiqar is offline
Registered User
 
Join Date: Nov 2010
Location: TX
Posts: 3,999
Quote:
Originally Posted by blau View Post
Before you folks said why. Well to make a long story short this is not on my Mercedes. It is on my BMW that does not even have a tranny funnel.

I ran across this on youtube. https://www.youtube.com/watch?v=MsdPAadc9fY

I want to do a drain and fill on my tranny. So my question do you folks see a problem with pumping tranny fluid in the tranny return coolant line to fill the tranny. This surely be a lot earlier and safer then to craw underneath a running car. The car has to be running to check and fill the transmission fluid level if you don't have a tranny dipstick.

I am particular interested in hearing from those of you who have experience or doing this is or similar procedure before.
a few points to note when looking at such a problem.

1 - does the design have ATF coming to the cooler in the radiator or does the design have coolant going to the transmission to cool it down, (yes some designs like this exist and usually have a sandwich cooler on the unit)

2 - if you have ATF cooler lines then filling up the ATF from the cooler line is not possible unless you have a pressure motive to push it in (dipstick funnel motive is gravity - here your cooler line is usually horizontal.

3 - how did the factory fill it up? - there must be a filler plug and a checking plug or overflow tube or something like that. (service manual can tell you that)



the video you posted is a plain ATF to radiator system - one line is disconnected, dumped into a bucket, the transmission oil pump pushes it out, and then the unit is filled from the dipstick hole or in some honda situations a bolt plug on the upper side of the casing.
__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)
Reply With Quote