Jp:

When you removed and inspected the KD solenoid, was there a small O-ring on the brass tip of the valve? If that O-ring is missing or damaged, the KD valve can leak enough to prevent an upshift to 4th gear.

If the trans shifts to 4th, the engine speed will be about 3300 RPM at 60MPH.
If in 3rd, 4800 @ 60.

The o-ring was there and in good condition.

I'll try to get a video before supper... otherwise it will be tomorrow...

I've finally done it

https://www.youtube.com/watch?v=I0gipRFNcXY&feature=youtu.be

New problem !

I'm now stuck in first

I went shopping with the mercedes , to buy stuff for HER , on my way back , I did a stop... and it never wanted to leave 1st gear... what a way to thank me for buying her goodies

My ATF fluid level was a little low , a little bit under the minimum mark.

I re-ajusted the fluid level and it didn't change a thing...

Jp:

1) Loosen the clamping nut on the front section of the drive shaft, so that the spline can slide.

2)Pry the output yoke (the three-legged flange on the back of the trans) fore and aft. If the output yoke can be slid along the output shaft even a little bit, the governor will no longer be clamped on the shaft (there is no key), and the governor will not spin with the shaft. No governor spin=no governor pressure=no shift.

Looks like my 'b2 piston' failed...

B2 Piston Repair

My reverse work fine and i can't get out of first gear...

Owww thanks !

I'll drop an eye on that before reading more on the B2 piston

Don't get all nervous and jerky!!

You do not have that transmission.

Luckly for me , i'm not nervous , but i'll be really happen when my transmission will finaly work correctly

I'm supposed to leave work soon tomorrow , should have plenty of time to work on the car

I unscrewed the big nut on the driveshaft , tried to pry she output woke in and out of the transmission , it didn't budge an inch.

What's next ?

It seems to be time to drain the trans, remove the pan and filter, and inspect for any obvious pieces in the pan.

Looks like i can't add picture... but i have evidence that i changed the filter and fluid...

Everything looked okay , the fluid was still a bright red.

The image quality was to big... that's why

Jp:

Do you have any knowledge of service work on the transmission? Work that involved removal of the valve body?

Sadly i've got nothing of that , i got it from the original owner when he passed away.... I got no repair bills , nada