leaf spring center bolt torque

Does anyone know it off hand? Fixing to start on my aal. Its an 09 model. Thanks!

 

No torque spec just tight. Look at chris4x4's write up and there are specs there except for that bolt.

 

Usually that is about a 3/8" diameter bolt, but hardened and threaded all the way through. I would say about 50-60ft/lb. NO antiseize since removal will probably require grinding or torching.

Or in laymans terms, two grunts and a fart. You want it tight enough to compress all the leaves together firmly, with just a little stretch. The nut will strip long before the bolt does.

A couple of C-Clamps often helps it get started and remember, cut off the excess with a hacksaw or abrasive wheel, careful not to take the temper out of it.

I have been building spring packs for decades.

Howard

 

Alright thanks guys

 

Around 50-55 ft lbs IIRC

 

German spec: Gooodntight

 

This too...

 

The stock bolt is only around 55 ft/lbs...
but I have had those come loose over time
during severe duty when flexing things out off road.
If the center bolt comes loose... the individual leaves could possibly fan out.

Sooo... I replaced mine with a grade 8 cap bolt/nut
and torqued that down to around 75 ft/lbs.

It's been several years now...
and nothing has worked loose, malformed or broke

* I recommend red locktite when installing.

 

Yep , had that happen before I try to use either a rated nylock or I'll tighten down & back it up w/nut (dbl nut)