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'87 700R4 filter problem..

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Old Dec 13, 2020 | 11:25 AM
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Default '87 700R4 filter problem..

Apologies if this has been repeated, but I'm struggling to fit my new AC Delco filter into my '87's 700R4 trans. It just wont go in!
The old filter came out easily enough with a single o ring and I dont think there is any other seal up there, but could someone take a close look at these images and advise if the port is indeed, 'old seal free' please..
Surely it can't be that tight. I dont want to pound on it as the metal of the bottom of the filter looks a tad thin..
Cheers..



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Old Dec 13, 2020 | 02:00 PM
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It does look like there isn't anything in there. Put a smear of grease on it and try.
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Old Dec 13, 2020 | 02:13 PM
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Originally Posted by exitwound
Apologies if this has been repeated, but I'm struggling to fit my new AC Delco filter into my '87's 700R4 trans. It just wont go in!
The old filter came out easily enough with a single o ring and I dont think there is any other seal up there, but could someone take a close look at these images and advise if the port is indeed, 'old seal free' please..
Surely it can't be that tight. I dont want to pound on it as the metal of the bottom of the filter looks a tad thin..
Cheers..



It should go in. Make sure to line it up straight and push and twist. Your old filter looks like it is for a 200-4R. I have seen some with a taper to the gasket. Do you have it on the right way?

Last edited by arbee; Dec 13, 2020 at 02:14 PM.
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Old Dec 13, 2020 | 02:35 PM
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Originally Posted by arbee
It should go in. Make sure to line it up straight and push and twist. Your old filter looks like it is for a 200-4R. I have seen some with a taper to the gasket. Do you have it on the right way?
Yes, the seal is fitted as supplied, already on the filter located between two shoulders so it cant slip either way. I think there is some metal content to the orange seal which is super tight on the filter neck.
Going to acquire some silicon grease and try again using a flat piece of wood to push on across the filter body..
Cheers..
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Old Dec 13, 2020 | 07:56 PM
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Slip the orange seal off. Install it in the valvebody with a socket. Then push the filter in.
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Old Dec 14, 2020 | 11:22 AM
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Originally Posted by 383vett
Slip the orange seal off. Install it in the valvebody with a socket. Then push the filter in.
Hi.. The orange seal is fixed tight between two shoulders as per the images.
The rubber itself is very soft but I believe there is a metal band inside the rubber section.
I tried to see if I could remove it but it was so soft, any attempt to prise it off would damage it.
Even if I could, there's no way to push it into the hole and then fit the filter as it would just collapse.
Its not like the old seals that were fairly rigid.
Ive ordered another brand of filter (ATP) to see if I have better success.

BTW, This AC Delco/GM branded filter came to me from Germany (I'm in the UK), so probably made in China or Turkey. The ATP filter is American made so I'm hoping for a better fit. 👍




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Old Dec 15, 2020 | 11:16 AM
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Update..
Rockauto refunded me half the cost of the AC Delco/GM 'professional' item as it was too tight to fit.
The ATP item went fairly easily with a bit of pressure amd some atf to lube the seal!
Happy now! Woo! 🤗
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