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    47re Teardown (OD section)

       (0 reviews)

    fire176969

    I started with removing the OD section since this can be done in the truck. Remove the bolts and tap with a dead blow hammer to get the case started apart. Once it is started you can use a prybar or large screwdriver to seperate them farther. I took it apart with the pan still on so the parking pawl lever gave some resistance.

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    The next step I took was to remove the overdrive clutches. Remove the waved snap ring and the clutches will come out of the basket.

     

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    Here is the basket/case with the clutches out
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    The clutches for overdrive layed out
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    If you look at the outside of the direct clutch basket in this picture you can see the broken snap ring which is the reason I pulled this transmission out in the first place.

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    Here is the access cover removed to get to the snap ring so the output shaft and direct clutch assembly can be removed from the case.

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    The output shaft assembly removed from the case.

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    Here is where the "special tools" came into play. I used some pieces of metal laying around to build basically a U shaped tool to compress the spring and clutches enough to remove the remaining pieces of the direct clutch basket snap-ring. I used a big vise to compress them and remove the pieces but a press would work better.
     

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    I removed the direct clutch hub to show you the direct clutch return spring. It has around 800Lbs. of force on it. I also used a vise to remove the retaining ring for it. THIS WAS VERY DANGEROUS!! It also was shown as needing a special tool to compress the spring however I only used a vise. I definitely recommend making a tool to compress this spring as you can see it is pretty hefty. One like the tool I made above should work fine but I was low on time so I didn't make one. However to just rebuild the trans I cn't see any reason this hub assembly would have to come apart.

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    Here are the parts from the OD section layed out, you can see the 5 pinion planetary gears and the internal gear for the sprag clutch. Along with the big spring, direct hub, and the direct clutch basket.

     Picture042.jpg.fc7e0a6e0e912c29fb34fbd6b

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