E4OD Front Pump

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Oct 20, 2008 | 09:59 AM

byronchaudoin

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E4OD Front Pump

I have the engine out of the truck awaiting installation of a remanufactured unit. Would like to add the Sonnax boost valve (Sonnax Transmission, Torque Converter, Performance, Driveline Parts :: :: 36424-01K :: Part Summary) to hopefully address the issue I have with delayed reverse. The front pump has to come off to install this valve. Looking for some advice on what to expect when removing the front pump. Is this a straight forward procedure or will a bunch of parts fall out of the front of the transmission that I won't be able to put back in? I have the factory manual and it only addresses removal of the front pump witht he transmission out fo the truck. It looks pretty straight forward in the manual, but again, that's assuming the transmission is out of the truck and on a stand with the converter housing facing up. I'm ordering everything from transmissionpartsusa.com and will include a new pump to housing gasket, pump to housing o-ring, and pump bolt sealing washers. Do I need any additional parts for the removal and reinstallation? Your help is appreciated.

Oct 21, 2008 | 09:28 AM

byronchaudoin

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Anyone have experience removing the front pump on an E4OD that can give me some pointers?

Oct 21, 2008 | 10:05 AM

jas88

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From: Greater Austin, Texas

You can pull it out with the transmission horizontal but it may be hard to tell when putting it back in if you are not binding one or more of the teflon rings. The pump should drop in all the way down without having to tighten any bolts to get it to go - you may have a hard time telling if that is the case if you are doing this horizontal. Be sure to put some grease on the teflon rings to keep them in tight to the pump housing. If your truck is 94 or older you should probably upgrade to a bigger pump.