[DeTomaso] Cruise control again--you how one project causes something else to break...?

Mon Sep 14 01:03:59 EDT 2009

Thanks,  I'm hoping it's something in the angled piece that's the problem.

Sincerely,

Chris

> Date: Sun, 13 Sep 2009 21:21:35 -0700
> From: asajay at asajay.com
> To: detomaso at realbig.com
> Subject: Re: [DeTomaso] Cruise control again--you how one project causes	something else to break...?
> 
> Chris,
> 
> For what it's worth, when I first purchased my Pantera over 10 years 
> ago, the angle drive was totally gone.  The "screwdriver" end that Mike 
> speaks of was broken off with about an eighth inch still left.  A kind 
> soul on this list sold me a new gear and angle drive.  The tricky part 
> was getting the gear out.  I used a strong magnet along with a pair of 
> needle nose pliers to hold the gear while I removed the retaining bolt 
> just below it.  If this drops into the gear box, I think I remember it's 
> a trans rebuild at that point (can't remember for sure).  But you should 
> be able to inspect it, just do NOT take out the retaining bold located 
> directly below the angle drive.
> 
> Asa Jay
> 
> Asa Jay Laughton, MSgt, USAFR, Retired
> 
> & Shelley Marie
> Spokane, WA
> 
> 1971 Mach I Mustang  [ASA JAY]
> 1973 Pantera L 5533  [ASASCAT]
>     
> ******************************     
> http://www.asajay.com
> http://www.teampanteraracing.com
>   
> 
> 
> 
> MikeLDrew at aol.com wrote:
> > In a message dated 9/13/09 19 55 30, chrisvkimball at msn.com writes:
> >
> >
> >   
> >> Before I start trying to strong arm the turnbuckle nut to move, is there 
> >> anyone out there who can give me some help and advice on what I'm looking 
> >> at to get the ZF device to work?  I was also told that if I do the wrong 
> >> thing, a piece (maybe an inner nut) might fall into the ZF which wouldn't be 
> >> good.
> >>
> >>     
> >
> > I just went through this exercise on Markus Woehler's car a few weeks ago.
> >
> > The ZF angle drive is not supposed to be loose on the gearbox.   There is a 
> > threaded pipe that exits the case at a 45-degree angle; the speedometer 
> > gear passes through this pipe.   The angle drive is threaded onto the pipe.   
> > The end of the speedo gear is shaped like a flat-blade screwdriver and 
> > engages a slot in the angle drive.   Bevel gears rotate the motion 90 degrees, 
> > ending in a square-shaped protrusion that the speedometer cable engages.
> >
> > You should not be able to rotate this protrusion by hand, given that it's 
> > directly geared to the speedometer gear.   In your case, something is wrong.
> >
> > The good news is it shouldn't cost too much to repair it.   It is probably 
> > just a bad angle drive and Dennis Quella (along with some of the other 
> > vendors) have good new and used ones available.   Dennis said a new one is $176 
> > and used is $100-120.   
> >
> > The other potential problem is that you could have broken the gear that 
> > emerges from the transmission and turns the angle drive.   That would be a bit 
> > more challenging.   
> >
> > Here's a photo of the part:
> >
> > http://www.panterapartsusa.com/cgi-bin/detail.cgi?prod_id=07801b
> >
> > The geared end goes into the transmission, the other end has what looks 
> > like a flat-blade screwdriver.   That engages the angle drive and turns it.   
> > What could have happened is that the screwdriver blade broke off.   If that's 
> > the case, then you have to do some gearbox surgery.
> >
> > Look at this drawing:
> >
> > http://www.panterasbywilkinson.com/webpages/catalog/ill11a.html
> >
> > You can see that the gear (part number 801) enters the transmission at a 
> > 45-degree angle, and is retained by a 17mm bolt that rides at a 90-degree 
> > angle to it (part 804).  If the end of your gear is broken, what you have to do 
> > is remove the bolt while retaining the gear with a pair of needlenose vice 
> > grips or whatever, and then carefully withdraw the gear from the 
> > transmission.   It has an O-ring that seals it against the inside of the sleeve to keep 
> > it from leaking oil, but if you goon it up, clink clank you'll drop the gear 
> > down inside the transmission.   Then you'd have to fish it out with a 
> > magnet which would be a major problem!   In the worst case, you'd have to take 
> > the gearbox out, and remove the bottom cover to extract it.
> >
> > You can see from the first link that this gear is a pretty spendy part, so 
> > I hope you haven't broken it.   However, if you have, the good news is that 
> > I've got a brand new replacement gear in my NOS parts stash, still in its 
> > original Ford box, and I'll make you a better deal than the vendors ever 
> > would. :>)
> >
> > You may have difficulty getting the angle drive off.   The nut threads onto 
> > the sleeve on the gearbox with a regular RH thread and is threaded onto the 
> > angle drive with LH thread.   Hopefully you can turn the nut and back the 
> > angle drive off.
> >
> > Once it's in your hand, it's easy to test--just insert a screwdriver into 
> > the gearbox end, where there's a slot, and turn it.   If there's no 
> > corresponding turnage on the output side, then you have found the problem.   On the 
> > other hand, if it works, then look carefully at the end of the drive gear and 
> > you'll probably find a broken-off screwdriver end.
> >
> > So, do the troubleshooting by removing the angle drive, and then let us 
> > know what you find out.   Thankfully most of the time the problem is the drive, 
> > and not the gear!   So it's a simple fix. :>)
> >
> > Mike
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