Re: T150+OD compatibility?

[Glen Hoag <hoag@xxxxxx>]

> On Fri, 3 Dec 2004, Glen Hoag wrote:
>
> >  The availability was 1975-6, to the best of my knowledge, though 
> > it might have
> >  been added late in MY 74.  It was also available in the Pacer, column shift
> >  only.  It's a nice setup, and should fit your Hornet.  The tailshaft seal is
> >  unique and no longer available, though I found a single lip seal 
> > that fit.  I
> >  expect I'll have to replace it sooner or later.
>
> That last could be trouble, do you remember the part number or application?

I think I kept the box.  I'll have a look.

> >  The yoke is unique to the overdrive unit in AMC application, but suitable
> >  replacements are still available from Spicer. 
>
> Comes with! Lucky me.
>
> >  The transmission mount is
> >  unique to the OD application, but Volvo used the same overdrive unit
> >  (GKN/Laycock-de Normanville J-type) and something for a 124 with OD might
> >  work.
>
> THanks for the warning. I will ahve to see what looks like when
> it gets here, but I will try to wangle something up.
>
>
> >  Control wiring can be as simple as a toggle switch, as the 
> > engagement is done
> >  with a solenoid valve that diverts gear oil to apply a hydraulic 
> > clutch, much
> >  like an automatic transmission.  The factory used a third gear lockout, a
> >  speed sensor on the speedometer drive, and a WOT kickdown switch on the
> >  throttle.  I have an aftermarket carb and my speed sensor is bad, so I
> >  manually engage it with the button on the turn signal stalk.
>
> I'll probably do a minimal semi-manual setup, a lockout and a manual
> kickdown switch on the floor shifter.

The lockout switch fits into the transmission; it's like the reverse 
gear switch with a ball that is depressed by the shift rail in the 
transmission.  Your setup probably has it; it will be near the front 
of the transmission, while the one near the back is for reverse.  It 
is used for turning on the backup lights.  The switches are 
different; the one for the backup light is probably a common ground 
style, while the one for third gear brings both terminals out, as the 
original circuit looked something like this:

+12v (ign) >---< OD switch on turn signal stalk >---< WOT disable >-+
                                                                    |
  +-----------------------------------------------------------------+
  |
  +-< 3rd gear >-+-< solenoid valve >-+-< speed sensor >--< GND
                 |                    |
                 +--< OD indicator >--+

How's that for a primitive AND gate?

--
Glen Hoag
hoag@xxxxxx                             '75 Pacer 258 (x3)
Limestone County, Alabama               '76 Pacer 258 (for parts)
                                        '81 Concord DL 258

AMO #7895    AMCPC #471                 '82 Spirit 151