Driveshaft torque specs

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NaterGator

NaterGator

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Can anybody give me the torque specs for the driveshaft (propshaft in the FSM) from the service manual? I'm changing the u-joints in my front and rear shafts and need to know the specs.


Thanks,
----Nate
 
Are you talking about the bolts through the flange on the front and the nuts/washer's to the flange bolts on the xfer side?

If so, tight--really tight. IIRC, 65ft/lbs.

I generally shoot for tight since I cannot get a torque wrench under my truck when I am working on it.

-o-
 
I snugged them up pretty much as tight as I could after getting tired changing the joints. I don't know how overtight those bolts and studs can get before snapping, but I don't even want to imagine the cost of snapping a stud so I'll just drive it for a day and get back under and check snugness.


The nuts were pretty seized after 120k miles, anybody try putting anti-seize on them? I didn't do it because I don't want a loose DS on the highway, but it crossed my mind.


BTW, a dealer at some point put moly grease in the u-joints :mad:... that probably contributed to their wear. They were definitely 'sticky' and they weren't even vibrating that bad. :confused:
 
NaterGator said:
I snugged them up pretty much as tight as I could after getting tired changing the joints. I don't know how overtight those bolts and studs can get before snapping, but I don't even want to imagine the cost of snapping a stud so I'll just drive it for a day and get back under and check snugness.


The nuts were pretty seized after 120k miles, anybody try putting anti-seize on them? I didn't do it because I don't want a loose DS on the highway, but it crossed my mind.


BTW, a dealer at some point put moly grease in the u-joints :mad:... that probably contributed to their wear. They were definitely 'sticky' and they weren't even vibrating that bad. :confused:
Click to expand...

If anything, they should be tighter rather than looser. The driveshaft bolts are pretty stout. I seriously doubt that you can "overtighten" them.

If you are planning on not taking the DS off for a while, I would put some types of threadlocker on them--Locktite blue might be a good choice.

I take the DS off at every oil change and clean things up and grease the splines by hand and have never had any issues with the DS flopping off at highway speeds or during off road adventures even with merely tightening them with what I can give under the truck.

I think you are fine.
-o-
 
beno said:
If you are planning on not taking the DS off for a while, I would put some types of threadlocker on them--Locktite blue might be a good choice.
Click to expand...

X2 I loctite everything :D (with blue although some of my buddies have recommended red:rolleyes:)
 
No, it wasn't beno. My race truck buildin' buddies swear by red:)
 
As long as I keep my rear driveshaft in phase and don't put it on backwards I should be alright. It doesn't matter if it matches up exactly on the TC and rear Diff where it was before. It could be flipped over like this pic and arrow right?

View attachment 227245
 
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NaterGator said:
The nuts were pretty seized after 120k miles, anybody try putting anti-seize on them? I didn't do it because I don't want a loose DS on the highway, but it crossed my mind.
Click to expand...

Mine were nasty the first time I took them off. I put anti-seize on them and cranked them back down hard. No issues thus far and much easier to crack loose the second, third and fourth times the shaft came off.
 
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