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  1. M

    2004 L35 Harsh upshifts

    Wolfman It is not slow to engage. Since I used to be a drag racer it engages somewhere between a trans with a shift kit and a transbrake. It was shifting just fine before the fluid change. Regarding the fluid change I did not notice any immediate change to how it shifted. It was gradual over...
  2. M

    2004 L35 Harsh upshifts

    Well Wolfman that is some more options. I pulled the plug off the bottom of the modulate valve and slide it apart but did not touch the # 7. It was in good shape and moved freely. Does that come out or adjust from the top? The lock nut is tight on the low pass valve. I have not taken the actual...
  3. M

    2004 L35 Harsh upshifts

    Well based on the lack of responses I am going to guess that nobody is a wizard with the inner workings of the GST transmission. I will try some things and get back to everyone if I find a solution.
  4. M

    2004 L35 Harsh upshifts

    Ok, so I checked all the pressures and here are the results. Original Adjusted Relief Valve 410 425 GST Press 330 365 Pilot 360 N/A Clutch Pack 365 N/A...
  5. M

    L35 1999 - So much fun with a bit of clutch and air filter mysteries

    I had the same transmission problem with my L35. It turned out to be a leak in the suction line near the hydraulic filter. Replaced the line and all was good. It was a very small weeping leak so I did not notice it until I went looking.
  6. M

    2004 L35 Harsh upshifts

    Thanks for the fast response. I have not yet measured the pressures, It might be a few days before I get a chance to work on it. I don't have any problems with making adjustments even if the factory doesn't want me to. You can learn a lot about stuff sometimes by just working on stuff your not...
  7. M

    2004 L35 Harsh upshifts

    Ok, so I have the manual and gauges needed. Reading the manual I understand about check the system, relief and pilot pressures. I have a basic understanding of the operation and it appears that the issue might be with the modulate valve or the accumulator or both. Unfortunately the manual...
  8. M

    2004 L35 Harsh upshifts

    Russell, I agree with you about the dealer. They generally ship parts from one of their other locations which has a much larger parts stock. The dealer closest to me (Sacramento) doesn't seem to stock much but their other store in farm country seems to always have the part. BIA, not yet...
  9. M

    2004 L35 Harsh upshifts

    Thanks gentlemen. I will get a manual ordered and go from there. The serial # is 72682. Is it possible that going back to the hydraulic fluid that was used previously solve the problem? I do not know what the shop used previously. The work order just says hydraulic fluid. In case any one...
  10. M

    2004 L35 Harsh upshifts

    Good afternoon everyone. I have an 2004 L35 that when I shift gears it has a very fast and harsh engagement. The problem is most pronounced when I shift to 2nd then third then fourth. It gets better as I go up the gears. The problem seems to have come about when I changed from whatever hydraulic...