I am in the process of rebuilding a 4R100 for my truck. I have rebuilt ZF5s and ZF6s before, but never an automatic, so I’ve been following a series of step-by-step videos for the teardown and assembly. Everything has matched up with my components until I reached the direct drive assembly. The transmission in the video has a 4-tab thrust washer with cutouts to position it against the drive assembly. However, my transmission doesn’t have this washer or any cutouts for it. The reference transmission is a gas 2WD, while mine is a diesel 4WD, so I’m not sure if the washer differs between them. I’ve attached a picture of both for comparison. If anyone with experience on the 4R100 could help, I’d really appreciate it.
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Where is your ATRA manual?
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I am inebriated, but based on the photos, it appears that you have it disassembled. Reassembling it ought to work.
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I advise you to visit the Ford Truck Enthusiast Forum.
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Thanks, I posted in the ford forum but I will post in that one too.
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Check out “Transmission Bench” on YouTube. I think they cover that issue, model, and type. It is the best video series on the 4R100 that I’ve come across so far.
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That’s his video, typically, he discusses which transmissions will have a washer or bearing in various places, but he says nothing specifically about the direct drive unit.
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I have one that’s supposed to be a good transmission, but I am not entirely sure. I bought it along with an engine that was supposedly from a wrecked truck and used the engine in my truck.