From: MISTYMTN (mistymtn@gwtc.net)
Date: Mon Mar 06 2006 - 11:21:00 PST
How long since fluid & filter change ?
If due - I'd highly reccomend a "flush"
w/ a machine as alot of old fluid & $#%& still
remains in the converter & trans. itself when
drained into a pan.
I believe they also use some kind of solvent
to help clean the varnish (?) or whatever
might be clogging the "valves" (?)
Even a tiny piece of old gasket floating
around can cause problems.
This worked for me a few years ago -
about $100 for flush & trans conditioner.
Just an idea --CRC
----- Original Message -----
From: <m2116x6@comcast.net>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Monday, March 06, 2006 7:59 AM
Subject: [MV] M1009 CUCV Trans trouble
> I'm having transmission trouble with the TH400 in my M1009 CUCV. Hopefully
> someone will recognize the symptoms. It started acting up last week. If
> you place it in drive and accelerate, it will slip briefly before engaging
> in first. The first to second shift occurs at about the normal speed range
> although it does not stay in second. It goes right into third gear too
> early. If you blink, you won't know it was ever in second at all.
>
> Shifting it manually works fine with no slippage in first. From a dead
> stop, if you start out with the gear selector in first gear then upshift
> to second anytime before its normal shift speed, it will upshift into
> second just fine. Upshift to drive for third gear and it goes into third
> fine.
>
> Fluid level is fine and the color is cherry red. This trans was last
> overhauled about 60,000 miles ago. There is no trans fluid in the
> modulator. Vacuum is good.
>
> What would make this act different between the drive position and shifting
> manually? Any help appreciated.
>
> Jim
>
>
>
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