From: R. A. Moir aka RAM (cyclopsram@starband.net)
Date: Thu Sep 26 2002 - 10:15:31 PDT
I just pulls it down into 2 and then back to drive when the time comes...
RAM
----- Original Message -----
From: "Nathan Wilkens" <nathan.wilkens@asu.edu>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Thursday, May 16, 2002 17:43
Subject: Re: [MV] Info on CUCV kickdown switch.
>
> Ted,
> You've touched on a sore issue with me! Although it always seems that I'm
> working on my CUCV, there is anything really broken with it. But, the
> transmission down-shift is one of the things that is painfully
> non-functional. If I lived in a flat country, I'd probably never notice
> it - but every time I go into the mountains, I feel the pain of not being
> able to down shift...
>
> Here's how it's (supposed) to work. The vacuum pump on the back of the
> motor generates a nearly constant vacuum (not perfectly constant, but
> close). The vacuum line should run up to the fuel injector pump, and
> connect to the injector pumps right side (your left as you face it from
the
> front). There is an adjustable throttle position sensor located on the
> injector pump that is supposed to change the vacuum to initiate the down
> shift. From there, the vacuum line goes down to the transmissions vacuum
> modulator that senses the vacuum pressure and shifts accordingly.
>
> The problem is this: If the transmission is ever rebuilt, I can nearly
> guarantee that they hooked it back up wrong (skipping the fuel injector
> position sensor) then adjusted the modulator to make it shift normal (on
> flat ground only). The other possibility is that since the throttle
> position sensor is easy to adjust (but difficult to adjust correctly) they
> probably by-passed it.
>
> The 34 manual shows how to adjust the throttle position sensor, but it
> requires a special spacer tool (it may be possible from the diagram in the
> 34 manual to 'fake' the distance and skip the spacer), it also requires
> either a STE/ICE (big $$) or the ability to apply a constant regulated
> vacuum on one side of the sensor and the ability to measure the vacuum
drop
> on the other side (a standard vacuum measuring tool will work for this,
but
> I haven't figure out how to apply the regulated vacuum on the other side-
> maybe I can tweak my vacuum cleaner?)
> The alternative is to just guess the adjustment on the modulator and
> throttle position sensor and keep trying until it works correctly.
>
> Hope this info was useful, and let the list know if you have success!
> Thanks,
> Nathan Wilkens
>
> ----- Original Message -----
> From: "Ted Hintopoulos" <hint@northnet.org>
> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Sent: Thursday, September 26, 2002 6:32 AM
> Subject: [MV] Info on CUCV kickdown switch.
>
>
> >
> > I've noticed on several CUCVs that the throttle transmission kickdown
> switch,
> > doesn't get activated when the pedal is to the metal.
> > The shaft barely moves the switch arm, not enough to activate it.
> > More interestingly, there appears to be no adjustment for it, slotted
> > mounting holes, etc.
> >
> > None of the MIL TMs make any mention of it except for its removal
> > and installation nor does my 84 civi manual.
> >
> > I know how to make it work, but what did the motorpool do?
> > Any ideas anyone?
> > Thanks again!
> >
> > Oh....remember that thread a long while back regarding spacers and long
> bolts
> > being used for no apparent reason; CUCVs, transfer case crossmember and
> > steering gear and I'm sure elsewhere.
> > Finally hit me (no not my head, but it would help), the bolt maintains
its
> > torque
> > much longer then a shorter bolt would without the spacer.
> > Bolt strech. Whether its really needed or not, I'll not go there.
> >
> > My $ .000025 worth.
> >
> > Ted Hintopoulos.
> >
> >
> >
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> >
>
>
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>
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