Overdrive

[JJSZABO]

Man your diagrams are da BOMB VIle - IMPRESIVE!!

[76_Scottsdale]

Well I pulled the valve body last night. I completley removed the 3/4 shift valve and visually inspected it to make sure it moved freely and it did. I re-installed the valve body and the tranny still has no 3/4 shift. The tech at Bowtie suggested checking the gasket in the 4th gear servo, as this is the only other thing that he thinks could cause no 3/4 shift apart from a bad valve body. I'm going to check the servo tomorrow. Could this possibly be the problem?

[76_Scottsdale]

bump

anyone have any thoughts?

[scpscpscp]

Hi, I do not want to interrupt your progress on your issue but I have been watching this thread carefully.  I have a 75 and have been contemplating the same.  After this is resolved, would you mind giving your thoughts on issues that you ran across in your installation.  I do have a 203 and not the 205.  I guess I should buy a transmission somewhere else that where you bought yours as it sounds like you seem to have to be doing way too much to fix this.  I understand if it works it is better than pulling it back out but they should give you something for your time, AT LEAST!

Good Luck!

Steve.

[zieg85]

Well I pulled the valve body last night. I completley removed the 3/4 shift valve and visually inspected it to make sure it moved freely and it did. I re-installed the valve body and the tranny still has no 3/4 shift. The tech at Bowtie suggested checking the gasket in the 4th gear servo, as this is the only other thing that he thinks could cause no 3/4 shift apart from a bad valve body. I'm going to check the servo tomorrow. Could this possibly be the problem?

If it were me, I would nicely insist on a new valve body.  Seems to me they are grabbing at straws as to why it is not working the way it should.  I guess that is why I like manual transmissions, I can work on every aspect of them by myself.  Good luck on the outcome, I hope they make it worth your while. 

[VileZambonie]

No 3-4 Shift:
 
Governor weights binding.
Governor valve stuck
Governor drive gear retaining pin missing or loose.
Governor drive gear damaged.
Governor support pin in case too long or short
Oil pump assembly faces not flat
Pump cover retainer and ball assembly omitted or damaged.
Accumulator valve, throttle valve, T.V. limit valve, 3-2 control valve, 1-2 shift valve train or 2-3 shift valve train stuck.
Manual valve link bent or damaged.
Valve body assembly spacer plates or gaskets incorrect, damaged or incorrectly installed.
Incorrect 2-4 servo assembly band apply pin.
Missing or damaged 2-4 servo seals.
Porosity in 2-4 servo pistons, cover and case.
Damaged 2-4 servo piston seal grooves.
Plugged or missing orifice cup plug in 2-4 servo assembly.
Third accumulator retainer and ball assembly leaking.
Porosity in 3-4 accumulator piston or bore.
3-4 accumulator piston seal or seal grooves damaged.
Plugged or missing orifice cup plug.
Restricted case oil passage.
Faulty input housing assembly.
2-4 band assembly worn or incorrectly installed.
 

[SUX2BU99]

   Man, no wonder people are afraid of auto trannies! On the flip side, quite the feat of engineering that all those things can work in harmony.

[Fordeatinz71]

yes, auto trannies can be mighty overwhelming but i plan on diving into mine here really soon...i'm scared as heck that i'm gonna mess it up but excited to learn something new...