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Thread: a904 pan finds

  1. #1
    Aspen and Volare Senior Member doublechaz's Avatar
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    a904 pan finds

    Two things in the pan that I don't like to see...

    First is a very dark brown grit that crumbles under pressure. If you put it all together it would probably be the diameter and thickness of a dime. This could be some kind of seal or part of the old reverse switch, or it could be friction. Anyone have a thought?

    Then there is a chunk of aluminum from the case. There is one face of it that has the same texture as the inside of the case, and the other three sides are broken. I can't see where it came from. It's a bit heavy to be casting flash.

    At no point did I hear any alarming sounds from the unit, nor did I have slippage or other strange behaviour. I openned it becuase it was time to do the filter, and it's been leaking badly from the shifter shaft.

    Pictures on the way...

  2. #2
    Aspen and Volare Senior Member doublechaz's Avatar
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    Here's the pics if they will link...

    Some of that grit may be dirt that got in there during the disassembly, but some of it seems to be a hard slightly porous material about 1/32 inch thick with flat faces.

    Click image for larger version. 

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    Aspen and Volare Super Member 77rr2x4s's Avatar
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    I`m not a trans guy but it doesn`t look good to me when you see stuff like that in the pan.

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    Aspen and Volare Super Moderator aspen79's Avatar
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    I've seen a lot worse in trans pans (overhauled a couple hundred auto trans at least) but anything more than minor black residue (clutch material) is not a good sign. However,,,,,,since it seemed to work fine and not make oise, I'd change the fluid and filter and see how it goes.
    1979 Aspen Sunrise 500". Bought in 1987 with 72,000 miles and a mighty E24 California emission 90hp leaning tower of power/4-speed
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    Aspen and Volare Super Member 77rr2x4s's Avatar
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    If it is a numbers matching trans and you are concerned with that then maybe it would be best to check it out. If that doesn`t matter then for me personally I would run it as is. I`m sure it will let you know if anything important is damaged.

  6. #6
    Aspen and Volare Senior Member doublechaz's Avatar
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    It's a toy car anyway, so if it were to blow up the worst part would be the tow bill.

    I forgot to mention I found one of the valve body screws loose in the pan *again* like last time I openned it 25k ago. Now I have to track down the screw pattern again to see where it belongs. (It's about 3/8" shorter than the rest of them.)

    If it blows, then I'll either rebuild it or swap in another, but it has lived a lot longer than I expected already so whatever it does will be what it does.

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