JD 790 drive shaft

[Robert Bolton]

Hi guys, what is the procedure for removing and replacing the front drive shaft on a 790? I can see that the bolt on the front spline has to be removed but what is under the rubber boot with the two hose clamps? I assume that there is another spline but will I lose fluid and are there any "gotchas" in this process?

Thanks, Robert.

 

[RoyJackson]

This would be a good time to buy a Deere service manual if you're going to tackle this kind of work.
The CD-ROM version (make sure you get the one for your 790!!! There's been 3 revisions to my knowledge) costs about $50 or so.

Have the serial number for your tractor when you go to the dealer.

 

[JimRB]

Does the parts diagram help out? John Deere - Parts Catalog

 

[Robert Bolton]

Thanks Jim. I have not been able to find the driveshaft in the parts book.
Robert

 

[Robert Bolton]

Thanks Roy. It really doesn't look too difficult. I agree with you about the service manual.
Jus asking if anyone else has been through this.
Robert

 

[joecdeere]

Robert, see if this helps -
check your private messages for more
Joe

 

[Robert Bolton]

Thanks, Joe. This helps a lot. My driveshaft must be a little different since it doesn't have the tube covering the shaft.
Robert

 

[Robert Bolton]

Thanks, Joe. This helps a lot. My driveshaft must be a little different since it doesn't have the tube covering the shaft.
Robert

Now I am beginning to think that something is missing. I will try to post pics.
Robert

 

[RoyJackson]

Now I am beginning to think that something is missing. I will try to post pics.
Robert

Sure looks like the tube that covers the drive shaft is missing...probably got dented up when the shaft was bent.

 

[AKfish]

Now I am beginning to think that something is missing. I will try to post pics.
Robert

Yep... your pics tell a story that the previous owner likely had a front end collision (high centered, etc.) on something that damaged the front steering tie rod and the front driveline.

That front shroud (cover) on the driveshaft is pretty important! It's always turning, turning. So, anything you drive through is very prone to getting wound up on the shaft. Tall grass, weeds. Wire! Everything... and something's could be a real problem!

AKfish