[DeTomaso] ZF leaks

[Tomas Gunnarsson]

The output shafts can not be removed from the outside, they are kept in place by a circlip on the inside of the side plate and since the side plate can't come off in the car pulling the trans is a minimum.

Tomas

----- Original Message ----- 
From: <JDeRyke at aol.com>
To: <gaino at earthlink.net>; <detomaso at realbig.com>
Sent: Thursday, March 19, 2009 8:37 PM
Subject: Re: [DeTomaso] ZF leaks


> In a message dated 3/19/09 11:06:07 AM, gaino at earthlink.net writes:
> 
>> My ZF has been leaking a little out each side of the output shafts that 
>> turn the axles. What is involved in replacing them?
>> 
> Nothing last forever.... but this is your golden opportunity to 
> check/maintain a whole bunch of necessary areas all at once. First drain the ZF, and remove 
> the ZF from the Pantera. The two long bolts below the diff go thru the side 
> plates and cannot be removed with the ZF in the car, except with a ridiculous 
> amount of effort and risk. Once out, remove the single bolt in the center of 
> the stub axle, then pull the inner stub axle. Examine the seal surface of the 
> inner stub-axle. If its torn up, this is why the seal went bad and you'll need 
> either a new axle or have the old axle repaired. If not, its simple wear. 
> Remove all the bolts holding ONE side plate. Once the plate is off, the seal can be 
> tapped out from the backside using a driver or a blunt screwdriver. Tap a new 
> seal in place and grease the seal-lip before sliding the inner stub-axle back 
> in place. I'd use a brand-new paper gasket on each side plate to eliminate 
> another possible leak. RBT Transmissions has the seals & gaskets quite 
> reasonably priced, and may have replacement inner stub-axles in stock. 
> Also suggest replacing the pilot bushing in the end of the crank (remove the 
> old one with a tap- wind it into the bushing and keep turning when the tap 
> bottoms; the bushing will slide right out on the tap),  the clutch throwout 
> bearing, and pull the ZF bottom cover to check for safety wire. If none is there, 
> all the vendors- and RBT- sell a 'kit' of predrilled U.S-made bolts, a bottom 
> plate gasket and a length of wire. All you'll need for the ring gear bolts is a 
> torque wrench and a crow-foot socket to fit whatever bolts you use.
> If you feel lucky and want to spend much more time poking and prying, its 
> barely possible to remove the halfshafts and the inner stub axles, and with a lot 
> of fooling around with custom-bent pry-bars, the seals may come out with the 
> ZF in place..... but it won't be easy and will likely take as long or longer 
> than simply pulling the ZF. And if the paper side-gasket is the real problem, 
> the ZF will have to come out anyway.... None of this is rocket science but its 
> dirty work, and the ZF weighs 155 lbs so get two husky friends to lift it out 
> (or a shop crane). Doing the 'extra stuff' like the throwout and pilot bushing 
> will very likely pay dividends later, too. Good luck, Bill- J Deryke
> 
> 
> 
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