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Recent content by YellowIron25

  1. Y

    Cat 120g trans problem

    No sir, I was just excited that it was working. I will check them if you think I need too?
  2. Y

    Cat 120g trans problem

    Sorry for the delay! It is running now!! It works like it should in all gears forward and reverse. No leaks when I checked with air. Thank y’all for taking time to help me getting it going!
  3. Y

    Cat 120g trans problem

    Yes sir, that’s what I’m thinking also after reading the updated document that you sent. I will try to reassemble today and let you know.
  4. Y

    Cat 120g trans problem

    Yes sir, when I rebuilt it I installed 4 disc and 4 plates.
  5. Y

    Cat 120g trans problem

    Serial number 87v1469 Transmission serial number 3P756 Arrangement# 3P1750 3P5379(the last four are kinda hard to make out) After reading through your attachment it appears someone upgraded the parts at sometime and I didn’t realize it. I was just going by the book. So that’s probably been the...
  6. Y

    Cat 120g trans problem

    So I went ahead and removed the transmission again. After looking at clutch 7 it looks like the carrier is different than what the book is showing. I will post some pics of what I’m looking at. Also I counted my old clutch plates and disc for clutch 7. I counted 3 plates and 4 disc removed. The...
  7. Y

    Cat 120g trans problem

    Yes sir makes sense. So I guess I need to remove the transmission again and check everything is right in the 7th clutch?
  8. Y

    Cat 120g trans problem

    Ok so I remove both axles. It still wants to stall in 1-3 forward and 1-3 reverse. It also seems like it leaks out the poppet valve all the time no matter what I do. Speed clutch (b) p1 Low idle in neutral 82-85 psi 1-3 forward and reverse with modulator pedal pressed in Im reading 197psi...
  9. Y

    Cat 120g trans problem

    Ok so I took the p1 pressure check. At idle it is at 85psi. In all gears forward and reverse it was 197 psi with the modulated pedal pressed in. I didn’t take axles out yet. Going to do that and recheck them. The p2 at idle is reading 0. Also oil is pouring out the poppet valve on top of the...
  10. Y

    Cat 120g trans problem

    No worries, I just appreciate the help! I will give this a try and post results when I get them.
  11. Y

    Cat 120g trans problem

    After testing some of the springs they are close to spec but not exact for free length. For example on the differential selector and pressure control valve Spring 3p8042 spec calls for (.431) and what I measured was .432. Spring 2p4547 spec calls for (.877) and what I measured was .853. Spring...
  12. Y

    Cat 120g trans problem

    I went ahead and replaced all the springs in the transmission. The springs in the control valve I did not replace or test under load. All the detents, cables and linkages seemed to be ok. I didn’t check the pressures in direction or speed clutch I ran out time today. Also I’m really not sure how...
  13. Y

    Cat 120g trans problem

    Pump pressure is at 285psi Speed clutch at neutral is 80psi
  14. Y

    Cat 120g trans problem

    No I didn’t. The only thing I found in the the control valve was nasty oil. Should I do some pressure checks? I’m kinda lost on what to do now?
  15. Y

    Cat 120g trans problem

    Well I finally got the chance to finish the rebuild on the transmission and install back on the machine. Now it doesn’t want to move in forward or reverse through gears 1,2,3 but it will move when I put it in 4,5,6. What could this be?
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