Transmission flush

Discussion in 'V8 - Maintenance & Troubleshooting' started by patrick hubbard, Jul 21, 2019.

  1. patrick hubbard

    patrick hubbard Member

    Joined:
    Jun 17, 2019
    Messages:
    62
    Likes Received:
    9
    Gender:
    Male
    Location:
    Pratt, ks
    I'm wanting to do a transmission flush but I'm having trouble finding a place to hook up the transmission flush machine that I have at work. Any help would be appreciated
     
  2. E1

    E1 Crash Tested

    Joined:
    Jan 24, 2003
    Messages:
    491
    Likes Received:
    198
    Occupation:
    Printing mechanic/engineer
    Location:
    Chicago area
    Home Page:
    sperold likes this.
  3. patrick hubbard

    patrick hubbard Member

    Joined:
    Jun 17, 2019
    Messages:
    62
    Likes Received:
    9
    Gender:
    Male
    Location:
    Pratt, ks
    Thanks. Now I know it's the upper hose on the cooler
     
  4. NoSlo

    NoSlo GoldMember

    Joined:
    Aug 21, 2003
    Messages:
    650
    Likes Received:
    430
    Location:
    Portland, OR
    Home Page:
    NO MACHINE! Let the transmission pump its own fluid out.
     
  5. patrick hubbard

    patrick hubbard Member

    Joined:
    Jun 17, 2019
    Messages:
    62
    Likes Received:
    9
    Gender:
    Male
    Location:
    Pratt, ks
    It does. The machine has a tank in it that has a bladder inside as old fluid comes in it pushes new fluid out at the same rate old comes into the machine cu
     
    gamefanatic likes this.
  6. gamefanatic

    gamefanatic SHO Member

    Joined:
    Feb 20, 2005
    Messages:
    373
    Likes Received:
    118
    Location:
    Barstow, CA
    I wanna say the top hose coming out is the hot fluid and the bottom is the supply. Its been over a year since I ran mine through a flush machine. Though within a few seconds of starting the process you should be able to tell if you have your hoses switched. I did this to both of mine before adding the tranny coolers to them.
     
  7. gamefanatic

    gamefanatic SHO Member

    Joined:
    Feb 20, 2005
    Messages:
    373
    Likes Received:
    118
    Location:
    Barstow, CA
    Just wanted to say always replace the filters on these. Its just a good idea.
     
  8. 99sho-time

    99sho-time SHO Member

    Joined:
    Dec 15, 2015
    Messages:
    255
    Likes Received:
    37
    Gender:
    Male
    i feel like id only be comfortable with just changing the filter and replacing the fluid. here in new york theres an actual legal disclosure not sure what you'd call it. but it protects shops against premature tranny failures due to tranny flushes, changes and what not.

    also I noticed the guy says tighten tranny pan bolts to 97 ft lbs?
     
  9. gamefanatic

    gamefanatic SHO Member

    Joined:
    Feb 20, 2005
    Messages:
    373
    Likes Received:
    118
    Location:
    Barstow, CA
    97ft lbs? No more than 112 inch pounds...
     
  10. NoSlo

    NoSlo GoldMember

    Joined:
    Aug 21, 2003
    Messages:
    650
    Likes Received:
    430
    Location:
    Portland, OR
    Home Page:
    I'd rather pump old fluid until the pan is dry, drop the pan and clean and replace filter, add 2.5 gallons plus the amount left in the pan, and pump again until the pan is dry, and add the final .6 gallons. Pumping in new fluid at the same time instead ensures that you get a nice mix of new and old in the pan while it is flushing, and agitates anything loose in the pan that may have been coating the pan, filter, or internals.

    The place to take fluid is the return line back to the transmission from the cooler. Out of the radiator cooler, follow one line to the aux cooler input, follow the other line out of the cooler, and disconnect this line. One might remove, agitate, and dump the cooler as one of the first steps, but that's asking for problems as much as it is solving them.

    Disconnect this line highlighted in red, at the cooler if you have no other disconnection points in the line other than at the transmission (needing a disconnect tool). You can put a drain hose on the cooler outlet into a bucket if not your machine, that way you can see when it starts to sputter air:
    [​IMG]
     
    Last edited: Jul 23, 2019
    stephen newberg and luigisho like this.
  11. E1

    E1 Crash Tested

    Joined:
    Jan 24, 2003
    Messages:
    491
    Likes Received:
    198
    Occupation:
    Printing mechanic/engineer
    Location:
    Chicago area
    Home Page:
    WRONG LINE !
    That is the power steering line.

    Take off the TOP hose, #7.
     
    gamefanatic likes this.
  12. patrick hubbard

    patrick hubbard Member

    Joined:
    Jun 17, 2019
    Messages:
    62
    Likes Received:
    9
    Gender:
    Male
    Location:
    Pratt, ks
    That's what I thought
     
  13. luigisho

    luigisho SHO Member

    Joined:
    Nov 2, 2001
    Messages:
    8,570
    Likes Received:
    1,614
    Location:
    va beach,va
    Home Page:
    I'm with everyone else. People on automotive boards alot see too many tranny failures with the flush machines. Drop the pan change the filter. I've also seen alot of bad AX4N rebuild and reman units fail early. I would mitigate risk to original trans if it was my car. I let my GenIII go because of tranny failure and didn't want to deal with rebuild
     
  14. NoSlo

    NoSlo GoldMember

    Joined:
    Aug 21, 2003
    Messages:
    650
    Likes Received:
    430
    Location:
    Portland, OR
    Home Page:
    Yes, oops, callout #6 is the power steering fluid line. #7 "clamp" is not helpful, but that's your spot above #6. Fixed the picture.

    Hard to track the lines out of the transmission from this picture.
     
    Last edited: Jul 23, 2019

Share This Page

If you wish to help keep SHOforum running, please click the donation button below