Tranny/Gearbox doesn't meet driveshaft

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Gornal
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Tranny/Gearbox doesn't meet driveshaft

Post by Gornal » Sun Feb 24, 2019 12:27 pm

I have just replaced my engine and tranny (on the same mount point as last time) and my driveshaft. When I go to bolt the two together, there is a good 1/2-1inch gap which I can't work out why. I have attached photos but unsure why they don't meet up. Is there a way to adjust either so they meet?

Any expert advice is well received!

thanks

Dave
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sfdaugherty
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Re: Tranny/Gearbox doesn't meet driveshaft

Post by sfdaugherty » Sun Feb 24, 2019 12:54 pm

You may have pushed the driveshaft too far into the tranny. Pull it out some.
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Gregs672000
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Re: Tranny/Gearbox doesn't meet driveshaft

Post by Gregs672000 » Sun Feb 24, 2019 12:59 pm

sfdaugherty wrote:
Sun Feb 24, 2019 12:54 pm
You may have pushed the driveshaft too far into the tranny. Pull it out some.
Yes, there's a lot of extra shaft length...
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theunz
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Re: Tranny/Gearbox doesn't meet driveshaft

Post by theunz » Sun Feb 24, 2019 1:08 pm

If I remember correctly, it's the splined front section of the drive shaft that is adjustable. There has to be some fore and aft movement of the drive shaft in order to accommodate the lateral movement of the rear axle.
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Re: Tranny/Gearbox doesn't meet driveshaft

Post by jrusso07 » Sun Feb 24, 2019 3:11 pm

As others have said, the front part of the shaft is splined and slides into the front yoke. The shaft needs to move fore and aft in the yoke. I usually bolt the yoke to the transmission first, be sure to apply grease to the splines, push drive shaft splined end into the yoke and then bolt the shaft to the rear differential. Some of my cars have a rubber piece on the yoke to help seal the splines jn the yoke...to keep grease in and water out I assume.

It's common to mark the drive shaft flange postion on the transmission and differential flanges before removal to be suure it goes back in the same way, for balance.
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Re: Tranny/Gearbox doesn't meet driveshaft

Post by david premo » Sun Feb 24, 2019 9:10 pm

It’s very important that you time the drive shaft, or your car will shake.

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Re: Tranny/Gearbox doesn't meet driveshaft

Post by nismou20 » Mon Feb 25, 2019 8:22 pm

How does one reindex the driveshaft to trans once its been pulled? I did not mark it when I removed the engine. Is that what you are referring to?

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Re: Tranny/Gearbox doesn't meet driveshaft

Post by david premo » Mon Feb 25, 2019 8:30 pm

The is O stamped on the yoke and a matching one on the drive shaft. Line them up and your good to go.

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Re: Tranny/Gearbox doesn't meet driveshaft

Post by nismou20 » Mon Feb 25, 2019 10:06 pm

That’s nice to know, thanks David.

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Re: Tranny/Gearbox doesn't meet driveshaft

Post by Linda » Tue Feb 26, 2019 10:18 pm

Probably under some grime:
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Re: Tranny/Gearbox doesn't meet driveshaft

Post by Gornal » Sun Mar 03, 2019 5:40 pm

All - thanks for all the support...I shall now check to see if I was fortunate enough to reindex (unwittingly) or perhaps undo and reposition.