1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

LR4 Transmission Fluid Change: Pan Swap Option

Discussion in 'LR4' started by Pfunk951, Jan 5, 2017.

  1. txfromwi

    txfromwi Well-Known Member

    Posts:
    47
    Likes Received:
    6
    Joined:
    Dec 18, 2013
    OK, I took another look.

    Looks like removing the protective shield, the big one under the engine, will allow access from the top of the frame member back to those 4 questionable bolts. Looks to be plenty of space when the shield is removed.

    But does anyone have any actual hands on knowledge?
     
  2. Michael Gain

    Michael Gain Full Access Member

    Posts:
    542
    Likes Received:
    234
    Joined:
    Dec 8, 2018
    Location:
    Clarksville, TN
    Yes. I talk about it here and show the tool that I used to remove the bolts. https://www.landroverworld.org/threads/what-did-you-do-with-your-lr4-today.42436/page-9

    It's not a bad job and I posted the procedure somewhere.

    Basically, remove the heat shield. Drain the pan. Remove the bolts. Pull straight down on the pan until the filter neck disengages from the mech unit. Then, levitate pan over the front cross member, rotate 90 degrees to clear the cat, and lower to the ground. Install is the reverse.
     
    Stuart Barnes likes this.
  3. CRYA

    CRYA Active Member

    Posts:
    31
    Likes Received:
    15
    Joined:
    Apr 14, 2021
    Location:
    Napa Valley
    Did you saw or use the "jerk" method on filter neck? Just curious what the consensus is on the various methods of pan swap.
     
  4. Michael Gain

    Michael Gain Full Access Member

    Posts:
    542
    Likes Received:
    234
    Joined:
    Dec 8, 2018
    Location:
    Clarksville, TN
    The saw is unneeded on the 8 speed. The filter neck is short enough to clear the mechtronic unit.
     
    CRYA likes this.
  5. txfromwi

    txfromwi Well-Known Member

    Posts:
    47
    Likes Received:
    6
    Joined:
    Dec 18, 2013
    Yes, I saw that thanks.

    For the 8 speed, I pulled the large shield and yes, you can access those front most bolts over the top of the body member. Looks straightforward.

    For the 8 speed it's either OEM at about $270 or an aftermarket at Rimmer Bros. for about $90.

    (The AB kit is for the 6 speed).

    Any reason to choose one over the other other than cost?
     
  6. CRYA

    CRYA Active Member

    Posts:
    31
    Likes Received:
    15
    Joined:
    Apr 14, 2021
    Location:
    Napa Valley
    Aaaah. Damnit! So you have an easier tranny fluid change. Nice!
     
    Michael Gain likes this.
  7. Michael Gain

    Michael Gain Full Access Member

    Posts:
    542
    Likes Received:
    234
    Joined:
    Dec 8, 2018
    Location:
    Clarksville, TN
    I got mine off of Amazon. I ordered the OEM ZF pan first ($220), but it arrived with a damaged gasket. I returned it and got one from Miami British ($119) and installed. The only difference I saw was gasket quality. The OEM rubber gasket seemed more pliable and better quality. However, the cheaper one installed just fine and had no leaks.
     
  8. txfromwi

    txfromwi Well-Known Member

    Posts:
    47
    Likes Received:
    6
    Joined:
    Dec 18, 2013

    Just to confirm I understand - the new assembly just slides right in on the 8 speed? There is enough space between the transmission and the frame member?
     
    Last edited: May 5, 2021 at 9:55 AM
  9. Michael Gain

    Michael Gain Full Access Member

    Posts:
    542
    Likes Received:
    234
    Joined:
    Dec 8, 2018
    Location:
    Clarksville, TN
    Correct. You still need to rotate for removal and install, but the filter neck is short enough to allow clearance between the crossmember and mech unit.
     
  10. txfromwi

    txfromwi Well-Known Member

    Posts:
    47
    Likes Received:
    6
    Joined:
    Dec 18, 2013
    SORRY! But Land Rover instructions in the Shop Manual are just incompatible with reality. Need your opinion.

    2016 LR4 8 speed transmission

    Pan coming soon, just doing a final instructions check...


    Rover Manual says:
    Run it through the gears.
    Put it in Neutral
    Hold at 2000 rpm for at least 30 seconds.
    Fine, that's easy.

    And now I quote, via copy and paste:

    "Move the TCS to the park position and allow the
    engine to idle between 600rpm and 750 rpm.
    Make sure that the transmission oil has exceeded a
    temperature of 69 degrees celsius so that the thermostat
    has fully opened allowing full circulation of the transmission
    fluid. Allow the temperature to drop below 30 degrees
    celsius before checking the transmission oil level."


    Just didn't sound realistic - and it's NOT.

    (and it hurts to do what you see below... ouch...)

    It's 80F here today, 27C
    In the garage, garage door open.
    Using IID Tool
    Transmission oil ain't NEVER getting to 69C at idle.
    In fact, it takes, and I timed it..
    28 minutes at 3,000rpm to get transmission oil temp to 69C.
    (So that means I am in the vehicle gassing myself....and beating the crap out of the vehicle..for half an hour..plus the below...)

    And it ain't NEVER going to cool off again either
    Once it does get to 69C
    Leave run at idle
    Turned on garage exhaust fan, dual overhead ceiling fans and a large table fan pointed under the vehicle from the front fender
    Opened hood and removed top of engine plastic cover
    And wow, she is HOT!
    After 15 minutes the transmission oil temperature is 72C
    So it's not cooling off, it's just getting hotter.
    Abandon test
    And I just don't ever see it cooling off to 30C unless this is performed in Alaska in winter...

    When final hot fill times comes, probably early next week,
    I propose to just
    start it
    run the gears
    hold 2000rpm for at least 30 seconds
    make sure transmission is at least 30C
    (per the ZF instructions in this thread several pages back 30C-50C)
    do the hot fill.

    And abandon the 69C paragraph.

    Comments?
    Thanks.
     

Share This Page