Replacing leaf spring bushes

XP29 · Post by **XP29** » Tue Mar 22, 16 10:20 am

That's my problem, when I try searching for the lb setting in getting different numbers.

I'm guessing I can over tighten and crunch the axle tube?

Pete · Post by **Pete** » Tue Mar 22, 16 10:29 am

I thought an 8 3/4 was around 45 Ft/Lbs - they are not as tight as you would think.........

Blue · Post by **Blue** » Tue Mar 22, 16 10:51 am

Only ever used 45ft lb on either style of U bolt and not had them come loose.

Dave999 · Post by **Dave999** » Tue Mar 22, 16 11:56 am

rough guide

https://www.autoandtrucksprings.com/pag ... orque.html

follow link for bolt size and torque spec.

I can see where my 70 Ftlb guess came from now, only appropriate for fatter bolts

I did mine to 45....based on my manual small axle small bolts etc

Dave

XP29 · Post by **XP29** » Tue Mar 22, 16 12:29 pm

Thanks guys, it's a big help as never having done this before I don't want to screw it up!

latil · Post by **latil** » Tue Mar 22, 16 7:48 pm

Winding 'em up to the point of stripping and backing off half turn is out then.

XP29 · Post by **XP29** » Tue Mar 22, 16 8:06 pm

Another thing, what do you guys torque the front eye bolt and shackles up to?

Pete · Post by **Pete** » Tue Mar 22, 16 8:12 pm

You need a Service Manual.

Again, from memory 115 Ft/lbs but check.

latil · Post by **latil** » Tue Mar 22, 16 8:30 pm

http://www.mymopar.com/index.php?pid=109

Pete · Post by **Pete** » Tue Mar 22, 16 8:45 pm

latil wrote:http://www.mymopar.com/index.php?pid=109

Tidy!!!

XP29 · Post by **XP29** » Tue Mar 22, 16 9:30 pm

Cool, thanks.

I know it's best to replace the U bolts. Is it ok/normal to re use the front eye bolts and nuts?

Looking at the manual it says to,

Tighten shackles and front eye bolt to 30 ft-lb while its in the air

Tighten U bolts to 40 ft-lb while in the air (that's these finished)

Put car on ground and tighten privet bolts (I'm taking it these are the front eye bolts) to 125 ft-lb. then shackle bolts to 40 ft-lb.

This is for the Coronet and Charger in case anyone else ever needs this. The Charger is just a Coronet underneath.

Steve · Post by **Steve** » Fri Mar 25, 16 9:41 pm

Lovely weather today and job done. We used a variety of pullers and g clamps etc to get all the old bits out and only had one really tricky part. We couldnt get the top bolt section of the rear shackle out of the hanger so we ended up just gently heating the top fixed end of the bolt and the heat transferred through and softened up the old rubber bushes. We then just slid it out and replaced everything after cleaning etc.

Took about 2 1/2 hours start to finish.

Thanks for all your help on this men

Cheers Steve and Andy

Andy R · Post by **Andy R** » Tue Mar 29, 16 1:19 pm

A big thank you to everyone for your advice and help, and also big thanks to Steve for helping me getting the mighty 'PUG' fixed. Just taken her for a retest and she's passed with only a couple of minor advisories.

Thanks again!!

Andy