driveshaft bolts , what are they ?

[pughman]

what are these , and what size ?

 

[Jefe]

13mm (or 12 ) 12-point

Just use a normal metric 12-point socket on them.

 

[LBarr2002]

if I remember correctly they're 12 mm

 

[pughman]

o ok, i thought they was something that i would need a new tool for ... lol...

 

[92 green sport]

If your taking them off you may want to heat them up with a torch. It makes it much easier.

 

[Creager]

12mm, yep.

My trick is to park on a flat surface, take the truck out of gear, with no parking brake... that sounds like a recipe for disaster right? (it doesnt hurt when it uses my leg as a chock, really), but it makes it super quick/easy when you can roll the truck back and forth to get those bolts. Easier then trying to fight around the gastank/exhaust.

 

[pughman]

Hell I got exhaust bolts off the manifold today without heat,these will hopefully come out like butter

 

[sn0border88]

make sure you put the flange back on in the same place, mark it before you remove.

 

[EMG7895]

make sure you put the flange back on in the same place, mark it before you remove.

yep, keep the joints in phase or you will get binding/vibrations

 

[Blee1099]

Mark the flange on the driveshaft and the flange on the axle/transfer case/transmission when removing.. I like to use a center punch and just mark a line across both of them. Definately heat the bolts up cause they can be stubborn, don't be afraid to use a breaker bar if they don't break loose easily for you.

 

[section525]

Or move to the West Coast and not worry about stuck bolts.

 

[pughman]

Or move to the West Coast and not worry about stuck bolts.

see mine came from a no salt area, so they have been coming out fine for me

if im puting in new gears , should i still mark it ?

 

[sn0border88]

yes, gears have nothing to do with the driveshaft.

 

[Brandons]

Ive actually noticed vibration (rumbling) from about (50kph - 60kph) since ive done my soa, I wonder if i should have marked it. But ive always been told it makes no difference.

 

[IZwack]

Ive actually noticed vibration (rumbling) from about (50kph - 60kph) since ive done my soa, I wonder if i should have marked it. But ive always been told it makes no difference.

If the driveshaft is balanced perfectly, is straight, and the U-joints and properly centered, then it wouldnt make a difference.

 

[Brandons]

Yeah thats what i was thinking.. I wonder if i should bolt it up the other way just in case (actually i think i still have the mark on it from when i dropped the transmission).

 

[section525]

Your pinion angle looks good? Mine was a little off after doing the SOA.

 

[Brandons]

I wonder that too.. I angled it a bit to try and line it up with the transfercase better.... Its probably off, knowing my luck, or maybe my ujoints are going..

 

[Jason94sport]

When I got the u joints done I did mark it but the shop rephased & balanced mine & said it didn't matter how it went in.
And yeah 12mm 12 point. My bolts came out easy as well(a first for me)

 

[Jefe]

I wonder that too.. I angled it a bit to try and line it up with the transfercase better.... Its probably off, knowing my luck, or maybe my ujoints are going..

It should neve make a difference how the driveshaft bolts in, as it should be a balanced assembly. Now if you messed up the pinoin angle doing the SOA then you will get vibrations. With single U joints at both ends you don't want to change the pinion angle when doing an SOA.