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TH400 Front Pump Gasket

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Old Apr 22, 2007 | 03:48 PM
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From: TEXAS - you mean there are other states?
Default TH400 Front Pump Gasket

OK - while I am at it might be a good thing in this case... wanting to replace the front pump gasket and torque converter seal.

Will any sealer ned to be used on the gasket for the front pump to casing? thanks
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Old Apr 22, 2007 | 04:01 PM
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I just finished stuffing all the innerds back in my 200 and the book nor the video called for any sealer
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Old Apr 22, 2007 | 04:07 PM
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No sealer. Go dry. Take a quick look at the bushing inside front pump. If worn they will cause leaks too. It's not hard to change really, but you have to split pump in half. Take it apart, check gears, replace bushing and then make an alignment tool out of a couple of big hose clamps to align it all..then tighten it back together.


JIM
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Old Apr 22, 2007 | 04:08 PM
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Originally Posted by SIXFOOTER
I just finished stuffing all the innerds back in my 200 and the book nor the video called for any sealer


Same for the TH350 so I think it's safe to say that it's the same for the TH400. Bit of a pain too because the gasket on the 350 is round and wants to turn as you align the bolt holes. Had to cut the heads off a couple of bolts and use them as locator pins.
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Old Apr 22, 2007 | 05:10 PM
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thanks guys...
I think it would probably be a good thing to use a light bead of ATF then

427HR... I will most likely shy away from the bushing thing - as soon I want to get a 200. But thanks tho... New Avatar huh?.....nice!
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Old Apr 22, 2007 | 05:47 PM
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Yeah..we thought cruising down the highway with the MiG 21 helmet on was sorta cool!


JIM
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Old Apr 22, 2007 | 10:18 PM
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Smart or no so smart, I elected not to install the front pump gasket... and that was after running across town to get it I just did not want to get into the tranny, as I will have soooo many items to check once I get running. plus a 200 is in my future
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Old Apr 22, 2007 | 11:28 PM
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the front pump gasket is not that tough to change. Getting the old one off can be. Razor blade and lots of time. New bushing will help prevent any leaks and possible vibration problems. If you decide to change it, be sure and watch the oring. There's stripe to make sure it's not rolled or twisted. And also make sure the gasket is not covering any holes, but is around all of them. Then a thin bead of red loctite around the OD of the fron seal.. cut the heads off a couple of 5/16 bolts and use them for guide pins. Lube the whole thing with vaseline, drop it in and go..

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Old Apr 23, 2007 | 11:23 PM
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Thanks Tim... I will save your comments in my archive
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Old Apr 24, 2007 | 01:39 AM
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If you have any questions, let me know.. I'll be around

Tim
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Old Apr 27, 2007 | 09:49 PM
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use a little vaseline or trans gel to hold it in place
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