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Ford 4000 1966 Select-o-speed

C

CAEMI

Member
Picked up a 1966 4000 gasser with running engine and Selectospeed transmission that doesnt operate. I found today that the PTO will not engage either. It does not have ground speed PTO option but appears to have the two speed PTO. The pto will not engage with the two speed lever in the center or forward.
Does anyone have a suggestion where I should start? Its a pretty nice looking machine with about 2000 hours on the clock.
 
What, if anything does work?

Unclear if tractor moves or if PTO only issue.

If nothing works and oil level OK, expect stripped input shaft and/or torque limiting clutch.

FWIW: NEVER trust the hours on Ford tractors of similar vintage as clusters are notoriously unreliable.
 
I can't help you with the transmission.
I can tell you that you never, ever trust the hours on one of those tractors unless you watch it turn over with your own eyes.
The hour meter on them failed early and often.
 
When I checked transmission oil it was, and youll find this hard to believe, it was FIVE GALLONS over full. I drained it all, installed a new cartridge filter, cleaned the primary metal screen filter (there was nothing on it it was very clean, no metal debris), and filled it with fresh 134.

None of the gears engage. The pto will turn by hand but will not engage. The differential lockout is set properly.
 
See my note above. The fluid I drained out was dirty but
not horrible and no weird sludge or debris of any kind.
 
(quoted from post at 19:24:55 12/28/22) What, if anything does work?

Unclear if tractor moves or if PTO only issue.

If nothing works and oil level OK, expect stripped input shaft and/or torque limiting clutch.

FWIW: NEVER trust the hours on Ford tractors of similar vintage as clusters are notoriously unreliable.
Click to expand...

By the way, I had the oil pan off and the lower end looks excellent.
 
Just a suggestion. You might have some luck finding help with your tractor over on the Ford Tractor Discussion forum as there are a some old Ford guys over there that don't spend much time here.
 
(quoted from post at 19:52:32 12/28/22)
(quoted from post at 00:12:32 12/29/22)

Do you have a shop manual yet?
Click to expand...

Sure do. IT.
Click to expand...


Then what you want to do is read up on the test and adjustment procedures. The most basic are band adjustments, then pressure checks, Then you can remove the top cover and adjust pressure regulating valves that are just under the cover. Band adjustments are easy. Pressure checks are a little more involved. Before getting into the pressure adjustments be sure that you understand the top cover removal procedure. There is no need to scrap it before checking it out like many people have done.
 
(quoted from post at 13:11:38 12/29/22)
(quoted from post at 19:52:32 12/28/22)
(quoted from post at 00:12:32 12/29/22)

Do you have a shop manual yet?
Click to expand...

Sure do. IT.
Click to expand...


Then what you want to do is read up on the test and adjustment procedures. The most basic are band adjustments, then pressure checks, Then you can remove the top cover and adjust pressure regulating valves that are just under the cover. Band adjustments are easy. Pressure checks are a little more involved. Before getting into the pressure adjustments be sure that you understand the top cover removal procedure. There is no need to scrap it before checking it out like many people have done.
Click to expand...

That was my plan but since it doesn t move at all and the PTO doesn t engage, I figured input shaft. Would you agree?
 
(quoted from post at 06:15:19 12/29/22)
(quoted from post at 13:11:38 12/29/22)
(quoted from post at 19:52:32 12/28/22)
(quoted from post at 00:12:32 12/29/22)

Do you have a shop manual yet?
Click to expand...

Sure do. IT.
Click to expand...


Then what you want to do is read up on the test and adjustment procedures. The most basic are band adjustments, then pressure checks, Then you can remove the top cover and adjust pressure regulating valves that are just under the cover. Band adjustments are easy. Pressure checks are a little more involved. Before getting into the pressure adjustments be sure that you understand the top cover removal procedure. There is no need to scrap it before checking it out like many people have done.
Click to expand...

That was my plan but since it doesn t move at all and the PTO doesn t engage, I figured input shaft. Would you agree?
Click to expand...

I agree, BUT, I would want to have my test results in hand when I have it split for input shaft repair and other problems crop up.
 
The last one of those I had anything to do with ended badly. Hard parts were obsolete, at least the ones I needed. It's amazing how Ford got all them guts inside that transmission case. There isn't much room left for oil.. I ended changing everything south of the rear of the engine with an 8 X 2 with independent PTO. At that time it was cheaper and more efficient to do this as opposed to repairing that slush-o-matic. Customer was happy as this wasn't the first problem he had with his tractor.
 
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