clevis bolt torque

[Gyro]

Installed OME front shock and spring and the clevis bolt does not seem to be tightening.
The gap in the clamp is 1/4" tighter(3/4") than the opposite side(still stock 1") and the thread is 3/16 further through also.
I have the torque wrench set to 50lbs(has not clicked yet),the bolt is still turning but I don't want to twist it off.
My clymer manual says 100lbs torque is that right?
Is there that much difference between stock and OME?

Gyro

 

[NJallDAY]

I looked on alldata and the clevis calls for 65ft lbs.... if you do sheer the head off it should only cost a few bucks for a new bolt

 

[tommudd]

There should be no difference between stock and OME or any others

 

[Gyro]

Just pulled the bolt and it is stretched and near the breaking point.
Going to get 2 new ones tomorrow,and replace the other side as well.
It must have been weak,as it took less than 50 ft lbs to stretch it.
100 ft lbs seems alot for a 10mm diameter bolt.

Gyro

 

[tommudd]

Are you sure you were installing the right bolt back in the clevis ??

 

[Gyro]

Of the five bolts removed 3 have the anti spin tab(uca x2,lower swaybar link).
No confusing the upper & lower clevis bolts.

The clevis bolt in this pic looks bigger than the one in mine.(07 sport)
I'm finding torque specs ranging from 45-100 ft lbs.
Did they change bolt size for later models?

Gyro

 

[NJallDAY]

Of the five bolts removed 3 have the anti spin tab(uca x2,lower swaybar link).
No confusing the upper & lower clevis bolts.

The clevis bolt in this pic looks bigger than the one in mine.(07 sport)
I'm finding torque specs ranging from 45-100 ft lbs.
Did they change bolt size for later models?

Gyro

65ft lbs was for a 2002 sport alldata calls for 110 for the 07 sport. Hope that helps

 

[Gyro]

100 ft lbs on an M10 bolt can't be right.
Here is another pic(westway lift),my bolts are M10x1.5x65,and are not as big as shown.
and a pic of mine

Gyro

 

[NJallDAY]

I agree. It seems like alot of force, but thats what its calling for. Has the bolt been replaced before?

 

[tommudd]

reason for my question is I have never seen a clevis bolt with threads all of the way to the end

 

[Cardhu]

My Clevis is shown at the bottom and is about the same size as yours. I also have the bolt flipped around to spread it apart with a wrench jammed in to spread it as much as required to fit it on.

http://www.boulderbars.com/images/k...FT_4Wheel_Drive_and_Sport_Utility_Article.pdf

Gives the torque value as 65 ft lbs. I'm pretty sure the 07's have a smaller clevis set up then other KJs. Its also the torque value i used. No idea about earlier models as I've only done mine.

http://www.jeepkj.com/forum/f196/torque-spec-socket-size-reference-guide-49749/
lists the torque at 100 and I think the Haynes manual says something similar. An M10 torqued to 100 seems like a lot regardless of grade of bolt. I'm sure there's a chart somewhere with guidelines that somebody can produce.

On another stand point check your torque on the wrench to make sure it clicks. I occasionally shove the 1/2 inch drive in the vice to make sure its clicking. Things your likely aware of but I'll say anyway. Mine (be it infrequent) does crap out or get stuck.

 

[NJallDAY]

here is the exact procedure for strut installation as stated by alldata

You must be registered for see images attach

1. Install the spring (1) to the shock (3) (if removed).
2. Install the shock assembly (3) to the vehicle.
3. Install the four upper shock mounting nuts. Tighten the nuts to 108 Nm (80 ft.lbs.).
4. Install the clevis bracket (2) at the shock. Tighten the bolt to 61 Nm (45 ft.lbs.).
5. Raise the lower control into place and reconnect the lower ball joint nut. Tighten the nut to 81 Nm (60 ft.lbs.).
6. Install the clevis bracket (2) at the lower control arm. Tighten the bolt to 150 Nm (110 ft.lbs.).
7. Install the lower stabilizer link at the lower control arm. Tighten the bolt to 136 Nm (100 ft.lbs.) .
8. Install the left tire and wheel assembly.
9. Lower the vehicle.
10. Reconnect the battery temperature sensor.
11. Install the battery tray.
12. Install the battery.
13. Reconnect the battery cables.

 

[Gyro]

reason for my question is I have never seen a clevis bolt with threads all of the way to the end

Yes, very strange indeed.
i talked to two dealerships and both had different answers.
One said same bolt through all years(but couldn't tell me the bolt size just part #) and torque of 100 ft lbs.
The other said 07 bolt is M10x1.5x65 and torque of 45 ft lbs.

@Cardhu,there does seem to be a change in bolt size somewhere along the line.

@NJallDAY,I just installed the new bolt at 45 ft lbs.


If you guys/gals could have a look(if you don't know for sure and/or it's not too much trouble)at your clevis bolt to check size,either M10 or M12,and state year of your liberty.


thanks all

Gyro

 

[rockymountain]

Front Suspension Torque


From the 06 service manual



looks like 45 ft/lbs is right.

 

[tommudd]

here is the exact procedure for strut installation as stated by alldata

You must be registered for see images attach

1. Install the spring (1) to the shock (3) (if removed).
2. Install the shock assembly (3) to the vehicle.
3. Install the four upper shock mounting nuts. Tighten the nuts to 108 Nm (80 ft.lbs.).
4. Install the clevis bracket (2) at the shock. Tighten the bolt to 61 Nm (45 ft.lbs.).
5. Raise the lower control into place and reconnect the lower ball joint nut. Tighten the nut to 81 Nm (60 ft.lbs.).
6. Install the clevis bracket (2) at the lower control arm. Tighten the bolt to 150 Nm (110 ft.lbs.).
7. Install the lower stabilizer link at the lower control arm. Tighten the bolt to 136 Nm (100 ft.lbs.) .
8. Install the left tire and wheel assembly.
9. Lower the vehicle.
10. Reconnect the battery temperature sensor.
11. Install the battery tray.
12. Install the battery.
13. Reconnect the battery cables.

Would work on stock setup
not worth a crap on lifted / or lifting since you need the top of the shock assembly to be a little loose to move around and get everything lined up correctly

 

[tommudd]

all clevis' are the same diameter

 

[NJallDAY]

Would work on stock setup
not worth a crap on lifted / or lifting since you need the top of the shock assembly to be a little loose to move around and get everything lined up correctly

Good to know tom. Thanks

 

[Luke]

you need the top of the shock assembly to be a little loose to move around and get everything lined up correctly

Ask me how I know this ... :happy175:

&^%&@!$&*

 

[BG987]

It is NOT 100ft-lbs

I read the 100ft-lbs too. From a few sources.

I tightened to 60ft-lbs. Then 70 ft-lbs. Then set it to 90, and it seems to take a little while... then *PING* bolt snapped before the torque wrench clicked.

I am going to find a higher grade of bolt... but will not be going anywhere near 100ft-lbs.

 

[Gyro]

If your Liberty is a 05 1/2,06,07, then you probably have an M10 bolt instead of the M12.
Torque the M10/grade 10.9 bolt to 45ft lbs.

I did the same to mine.
Makes it a pain to add clevis lift having to pull the bottom of the strut off to add rings,The M10 @45ft lbs is not enough to hold it tight,a couple good bumps and it's back to the bottom.