Re: Not so strange problem on a '57 Torqueflite

[Philippe COURANT <accf_clb@xxxx>]

It's a good idea to verify if i can "free" the forward clutches with air
pressure : the FSM shows the oil passage in trans. case and describes all air
pressure tests. (I've already remove the valve body from trans. so itsn't a
difficult job !).
But, even i succeed in loosen the clutch pack i'm not sure that it is in good
conditions !
Someone told me to add to the trans. diesel oil (don't know if it's the correct
word, in France the word is "gas-oil" and it's the fuel of diesel engine): 3 or
4 quarts (or more) to complete with oil transmission. This mixture could perhaps
clean the trans. but i'm not sure of the results on all bushings which 'll not
be well lubricate..

I think i'm ready to a trans. overhaul !! And order a kit from Fastco.


Mike & Sharon Higgins a écrit :

> The TorqueFlite trans uses a "Forward" clutch, and a "Rear" clutch, along
> with bands,
> to operate.
> In the foward ranges, the Forward Clutch pack is pressurized, along with the
> "overrunning (slip) clutch (first speed), the Second Speed Band (second
> speed ), and the Rear Clutch (third high). The "Low-Reverse" band will hold
> the rear drum just like the overrunning clutch, but does not release the
> drum for second speed overspeeding.
> In reverse, The Forward Clutch releases, and the rear clutch and Low-Reverse
> band are applied, causing the front plates and output shaft to turn
> backward.
> If the forward clutch is seized, it would cause the car to creep forward in
> nuetral, because the overrunning clutch needs just the forward clutch to be
> applied, just like seizing. It would also cause the car to STOP in reverse,
> because the front plates wouldn't be able to turn backward.
>
> I think you need to remove and rebuild, unless by removing the pan and
> applying air pressure you can jar the clutch pack loose. You would have to
> remove the valve body, (be careful not to drop the ball bearing check
> valves), and locate the pressure apply holes. Not very likely to be
> successful, though, because the front clutch pack is released by spring
> pressure. Replacing the front clutches sounds like the only alternative,
> and if you're going to do that, you may as well replace the other clutch
> pack and the bands and servo seals.
> In other words, Rebuild.
>
> Mike Higgins
> 1955 Belvedere Sport Coupe

--
Philippe COURANT (Pau, France)
Imperial 57 Crown convertible
Buick 58 Roadmaster sedan

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