[DeTomaso] Another ZF issue

[Thomas Borcich]

John,

You're a frigin GENIUS!!!!! I think you may have just hit a home run. I 
thought I was pretty mechanical, but NEVER gave that a thought! The bend 
does go toward the box and when shifting to 5th it would naturally rotate in 
the direction of the u-joint. I just reviewed a picture of the transaxle and 
the u-joint and it looks like there is a mark on the edge of the u-joint 
where it would be hitting...I will check when I get home tonight and 
hopefully I will be emailing you back with good news!!!  I was getting ready 
to pull the ZF and drop it off at Butfoys place to have it torn apart! 
Looks like I might owe you a nice dinner at one of the upcoming events.

Thanks for taking a swing, I let you know.

Best regards,

Tom Borcich
 .


----- Original Message ----- 
From: "John Taphorn" <jtaphorn at kingwoodcable.com>
To: "Thomas Borcich" <Tborcich at msn.com>; <detomaso at realbig.com>
Sent: Thursday, August 24, 2006 4:26 PM
Subject: Re: [DeTomaso] Another ZF issue


> Thomas
>
> My batting average on correctly guessing ailments has been horrible; yet, 
> I'll take another swing.
>
> It sounds as if your shifter shaft is being struck by the portion of the 
> halfshaft that houses your u-joint. Perhaps the bow in you shifter shaft 
> removes what tiny clearance exists when rotated into 5th.
>
> The correction is to raise the height of the trunion bearing and you will 
> gain more clearance.
>
> Don't sweat the ZF, it is very unlikely the problem is internal.
>
> JT
> ----- Original Message ----- 
> From: "Thomas Borcich" <Tborcich at msn.com>
> To: <detomaso at realbig.com>
> Sent: Thursday, August 24, 2006 3:13 PM
> Subject: [DeTomaso] Another ZF issue
>
>
> > OK, I guess I'm not the only one with quirky problems with the ZF. 
> > Hopefully my issue is related to shifter adjustment.  Just purchased 
> > #4382, a 72L with 27,500 miles on it.  It has the "-2 gear box" and has 
> > not been driven in 10 years, only to and from the mechanics shop who 
> > rebuilt the motor which accounts for less than 10 miles and never 
> > reached any speeds appropriate for 5th gear during the drive home. Prior 
> > to that no problems with the gear box.  I tried to shift into 5th gear 
> > over the weekend and I got a clunking noise that pushes back into the 
> > shifter handle...it is a consistent clunking noise that moves the 
> > shifter handle. It appears that I get 5th gear and can hear the motor 
> > drop rpm's, but the clunking sound continues and forces you to pull it 
> > out of gear for fear of doing damage to the ZF.  I have drained the gear 
> > oil and refilled and found no chunks of metal, actually pretty clean. 
> > All other gears shift and operate well. I did notice that there is a 
> > slight bend in !
> > the linkage which gives the linkage a bow, so I need to replace a short 
> > length of the linkage to cure that issue. Any thoughts or similar 
> > issues?
> >
> > I spoke to Mad Dog Antenucci who mentioned the trunion bearing/support 
> > may need replacing, (just as a normal part of maintenance if nothing 
> > else). I have been told that you can replace it with a metal Hiem joint 
> > affair rather than the rubber bushing and you get a more direct feel 
> > from the shifter linkage, any comments?
> >
> > Thanks in advance for any suggestions
> >
> > Best regards,
> >
> > Tom Borcich
> > Seal Beach, CA
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