Drivetrain - Transmission Pan Bolt | Ford Escort Owners Association (FEOA)
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Drivetrain Transmission Pan Bolt

Discussion in 'Drivetrains' started by spechtg, Jul 17, 2020.

  1. spechtg

    spechtg New Member

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    Hi,

    Recently purchased '97 Ford Escort LX automatic. I want to replace some of the transmission pan bolts but I cannot find specific info anywhere online to confidently order them. Any info would be very much appreciated.
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  2. denisond3

    denisond3 Moderator Staff Member

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    I have not found the exact same bolt listed - yet. They are an M6-1.0 thread diameter & pitch, and are 9mm long overall. Only the first 5mm of that is threaded though - the threads stop after the 5mm point, going to a smaller diameter unthreaded tip.

    For a box of 25 similar bolts, the Dorman part number is 700-250. These have washers under the heads, but the washer is small enough to fit down into the flange on the oil pan. They are about 23mm long. The extra length is not a problem, since most of the 19 threaded holes in the trans case go through the flange on the trans case, threaded all the way. (I dont recall if the three holes that go into the case next to the bell housing are drilled through into the case interior.) Most any auto parts store should be able to order in a box of the 700-250. Dorman unfortunately doesnt sell to retail customers, nor in single bolt quantities.
    Any good hardware store should carry the very similar M6-1.0 by 12mm length metric bolts.

    A big problem for me is access to the trans pan bolts as they are located in the car.
    I have rebuilt five of the F4EAT automatic transmissions. With each one I found one or more of the bolt holes for the oil pan were cross-threaded or had stripped threads, or someone had installed an oversized SAE sized bolt. Although it would be a super nuisance to have to fix them with the trans in the car, in my case I had the trans out and on my workbench. I got the 'kit' of the helical threaded inserts to drill out the old threads to an oversize and install the threaded insert - which restores the hole to a nice fit for the 6mm bolts. And makes it stronger!

    After working on my first Escort in 2006, one of the first jobs I do, is to see if the front-to-rear crossmember that supports the bell-housing is removable. It has two fat bolts at the front, going into captive nuts buried inside the later crossmember below the radiator, and two nuts at the back end, that thread onto studs in the subframe. There are also four nuts holding the front and rear transmission mounts to that crossmember. With my first Escort, getting the two front bolts out took up much of a three day weekend, since the captive nuts broke loose. Luckily I have an oxy-actylene torch set, and was able to slice the lateral crossmember open, braze the captive nuts back in place, and while heating them to the color of a school bus - to unscrew the bolts. (Then I cleaned up the threads with a 12mm thread tap and die, & welded the crossmember back shut.)
    That front-to-rear crossmember thus became something to check-out on each new Escort that I worked on. Part of my auto fix-up hobby.
    Though you need to support the trans bell housing with a jack once the crossmember is out, I had good access to remove the little bolts holding the trans oil pan - and to drain/refill the transmission with clean ATF.
    I know some members on these forums were able to jack up the transmission and remove the bolts on the oil pan. I never tried that.

    I also use a torque wrench to tighten up the little bolts - and I retighten them after initial tightening (which means after getting the transmission ready to go back into the car), and anytime I have reason to take the front-to-rear crossmember down.
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  3. denisond3

    denisond3 Moderator Staff Member

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    And Welcome to the forums!
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  4. zzyzzx

    zzyzzx FEOA Member

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    I can confirm that on a 1995LX, they are M6-1.0, but I am not sure about the length.
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  5. spechtg

    spechtg New Member

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    Thank you for the amazing response and warm welcome. Cheers!




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  6. zzyzzx

    zzyzzx FEOA Member

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    M6-1.0-14, but the roughly 2mm closest to the end away from the head aren't threaded.

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