Driveshaft Torque Specs

[jneil92]

I have a 67 Newport and was wondering if anyone knew the torque specs to the pinion bolts on the driveshaft? Also the torque specs to the oil pan bolts? All insight appreciated

 

[Polara_500]

Are you talking about the nut on the rear end holding the yoke to the pinion shaft or the straps holding the u-joint to the yoke?

 

[jneil92]

Are you talking about the nut on the rear end holding the yoke to the pinion shaft or the straps holding the u-joint to the yoke?

Both actually now that you mentioned it

 

[commando1]

All the torque specs for your car would be in your Factory Service Manual.

 

[tallhair]

wrist tighten till they're about to strip then back em off a 1/4 turn

 

[commando1]

wrist tighten till they're about to strip then back em off a 1/4 turn

"till they are about to strip"

That's like giving driving directions and saying "and take the next to last exit..."

 

[tallhair]

sometimes I say start to strip but felt like the changing it up this morning for added confusion

 

[commando1]

start to strip is just as bad.
How do you know when they are at the point where they will strip if you go further.

 

[tallhair]

start to strip is just as bad.
How do you know when they are at the point where they will strip if you go further.

If you don't know I can't teach you

It's a feel thing

 

[bluefury361]

wrist tighten till they're about to strip then back em off a 1/4 turn

Now thats just bad advise ........ He might take you seriously.....!!!! Torque specs are only effective on the tighten direction. Once you "back off" a fastener the torque load changes and is no longer effective.

Not sure about the pinion nut but the u joint strap bolts are 25 LBS. You really should locate a FSM.

 

[tallhair]

Now thats just bad advise ........ He might take you seriously.....!!!! Torque specs are only effective on the tighten direction. Once you "back off" a fastener the torque load changes and is no longer effective.

Not sure about the pinion nut but the u joint strap bolts are 25 LBS. You really should locate a FSM.

No worry of that. I was watching to make sure someone came along and told me it was bad advice

 

[commando1]

You were messing with me then, weren't you Bryan....

Posted via Topify on Android

 

[tallhair]

You were messing with me then, weren't you Bryan....

Posted via Topify on Android

Yes. I confess

I was sick all week and am feeling much better now

 

[jneil92]

Now thats just bad advise ........ He might take you seriously.....!!!! Torque specs are only effective on the tighten direction. Once you "back off" a fastener the torque load changes and is no longer effective.

Not sure about the pinion nut but the u joint strap bolts are 25 LBS. You really should locate a FSM.

Thank you, you've been the most help with this problem so far. I really have no way of getting a factory service manual right now or I definitely would have done it already. The pinion nut is really bothering me, I'm going to pull it in a few minutes but I really wanna know some torque specs before I put it back on.

 

[jneil92]

Someone here HAS to have a factory service manual, or atleast has a general idea of the pinion nut torque spec??? :gah:

 

[tallhair]

Thank you, you've been the most help with this problem so far. I really have no way of getting a factory service manual right now or I definitely would have done it already. The pinion nut is really bothering me, I'm going to pull it in a few minutes but I really wanna know some torque specs before I put it back on.

I'll help out with the second question ... click the first link

linky

 

[Big_John]

Download a 67 Full size Dodge FSM from here: http://www.mymopar.com/index.php?pid=109

It will be close enough for a lot of things until you get the right FSM.

Here's a DVD version http://www.ebay.com/itm/1967-Chrysl...967|Make:Chrysler&hash=item20c93c2139&vxp=mtr

or there's paper versions on Ebay right now for a bit more.

 

[Polara_500]

Okay - went out and looked at a 67 FSM - the drive pinion flange nut torque is 200 - 220 ft/lbs. Now, since no one else said it, (surprisingly), without an FSM and a few expensive special tools you do not want to touch that nut. If you do there's a few other things that should be done which basically require complete rear end tear-down so you can verify pre-load, backlash, etc.. If you should happen to find it loose you should be able to tighten it so you can drive it to a repair shop or get it home, but that's the only reason I'd do it. The torque spec for the driveshaft retainer bolts is listed at 170 - 200 inch/lbs which is 14 - 16.5 ft/lbs.
Mike

 

[jneil92]

Okay - went out and looked at a 67 FSM - the drive pinion flange nut torque is 200 - 220 ft/lbs. Now, since no one else said it, (surprisingly), without an FSM and a few expensive special tools you do not want to touch that nut. If you do there's a few other things that should be done which basically require complete rear end tear-down so you can verify pre-load, backlash, etc.. If you should happen to find it loose you should be able to tighten it so you can drive it to a repair shop or get it home, but that's the only reason I'd do it. The torque spec for the driveshaft retainer bolts is listed at 170 - 200 inch/lbs which is 14 - 16.5 ft/lbs.
Mike

How in depth of a tear down would it be? I have been trying to replace the pinion seal because I've had a leak. What kind of tools and such would I require? And if theres no other option how much do you think a shop would charge to do it?

 

[bluefury361]

How in depth of a tear down would it be? I have been trying to replace the pinion seal because I've had a leak. QUOTE]

A leaking pinion seal usually indicates a worn pinion bearing, which would indicate additional worn parts. A rebuild requires several specialized tools, best left to a pro shop ....... Be ready to drop $500.00 plus.

If it's not leaking to badly, or if there are no strange noises coming from the diff then just keep it topped off with lube and drive it........