Recent content by Trevin

  1. T

    H55F and 3rd gear problem

    I compared the aftermarket 3-4 shift hub and collar with the one I removed from the transmission. There were no obvious differences, the machining and toilerances all looked identical. Even the play between the hub and collar was identical. There were no markings on my old shift hub or sleeve...
  2. T

    H55F and 3rd gear problem

    **Update** I pulled the transmission, yet again, and put back the original 3-4 shift hub & collar, and counter gear. That did the trick, the transmission performs like a champ. These were aftermarket parts, and I can't say for sure which ones were faulty. The originals were't in bad shape, I...
  3. T

    H55F and 3rd gear problem

    Yes, they were quite loose. I drilled them out, threaded the holes and made 2 replacement pins that I installed with loctite. The combination of that repair and the rebuild of the shifter has made a big difference in the feel of the shifter. Unfortuneatly, it all made no improvement in the...
  4. T

    H55F and 3rd gear problem

    Hi there, I would say that if nothing more than the weight of the shift lever will pull it out of 3rd, even when parked, the fault lies with the shifter. Specifically, the detent balls and springs. Here is a link to a video that illustrates the rebuild process... the audio is in Japanese, but...
  5. T

    H55F and 3rd gear problem

    That's my thinking as well... When I started the transmission project, it just didn't shift smoothly because the syncro's were worn and ineffective. The transmission was otherwise fine. After the rebuild, it shifted fine, but rather violently jumped out of 3rd on deceleration. Everything I've...
  6. T

    H55F and 3rd gear problem

    That's where I am now... I'll pull the transmission, it's now a question of do I spend around $500 for new, genuine Toyota parts, or just put the originals back. Either way, it feels like a gamble. I've spent a lot of time starting at the gearbox with the cover off, trying to imagine what would...
  7. T

    H55F and 3rd gear problem

    I replaced the shifter hub and sleeve on the original rebuild, looking back at my records, I can tell the replacements were aftermarket. The original parts showed only minor wear at the contact points for the syncro keys. the keys also showed minor wear. I replaced them out of an abundance of...
  8. T

    H55F and 3rd gear problem

    Thanks Eurasiaoverland, I really appreciate your thoughtful consideration. I'll answer your questions as below... Do you feel a positive detent position on the gear lever when engaging 3rd? Yes, no doubt. Are you 100 % certain that the synchro keys and radial springs are correctly inserted...
  9. T

    H55F and 3rd gear problem

    I think that's about the only thing left to look at... I can't come up with anyting else. Those parts are all new, and it looks like I'll be pulling the transmission again. Unfortuneatly, that can't be inspected in place.
  10. T

    H55F and 3rd gear problem

    The shifter appears to be working properly, new detent balls and springs. It does take a reasonable effort to move the shift forks by hand. Not really 2 rebuilds... First was the rebuild, everything worked fine, except popping out of 3rd gear quite dramatically on deceleration. Then...
  11. T

    H55F and 3rd gear problem

    Right after the rebuild, it was fairly violent... to the point that I didn't want to try and hold it in gear for fear of breaking the shift fork. However, since then, I have replaced 3rd gear and rebuilt the shifter, now I can easily hold it in gear with one finger on the shift lever.
  12. T

    H55F and 3rd gear problem

    I have the floor panel off above the transmission, so I can see the entire unit when driving... nothing comes close to the shifter. Yes, 4th, and all other gears are fine. 3rd is fine under acceleration, but it will "shift" into neutral even driving on a flat road as soon as I ease off the...
  13. T

    H55F and 3rd gear problem

    Thanks for the reply... I did the rebuild, the problem I wanted to solve was essentially worn syncro rings. When I got it apart, I found that it was in pretty rough shape, I replaced the following parts: Bearings & bushings Countershaft 1-2 shift assembly 3rd gear, syncro, shift hub, sleeve...
  14. T

    H55F and 3rd gear problem

    Older thread, but... Did you find a solution? Mine jumps out of third on deceleration, after a complete rebuild, including the shifter. If actually feels like it's being pushed into neutral when this happens.
  15. T

    H55F Shifting Problem

    Yes, the shift into 3rd feels perfectly normal. I didn't take the cover apart, and the detent in the cover feels very solid. I can keep it in 3rd when decelerating by holding the shifter, but I can feel definit pressure on the shifter as it tries to disengage. It doesn't "fall" out of gear...
Back
Top Bottom