I just put the third member (pumpkin) in. But the pinion nut had already been taken off so i have no idea how many turns and no markings to go on. Does anyone know how tight i should tighten the nut?
I just put the third member (pumpkin) in. But the pinion nut had already been taken off so i have no idea how many turns and no markings to go on. Does anyone know how tight i should tighten the nut?
Why was the pinion nut removed/loosened?? Generally you wouldn't do that unless there was a problem of some sort. Is this with the stock rear in your '55 210 ?? If so I'd remove the pumpkin from the differential, mount it up in a vise, and get a service manual for the car and follow the service manual recommendation. I've completely set up a '57 rear but it was long ago and I wouldn't want to rely on my memory!
I just zap them with an impact, being careful nut to add crush to the sleeve.
What markm said.
The only other thing you could do is get a new crush sleeve and set it up per the shop manual.
If you tighten the pinion nut, then you still need to check the pinion to ring gear lash...
The pinion nut's tightness or lack of it doesn't affect the gear mesh, especially the lash. Its only effect is on pinion bearing preload.
It takes a pretty good lick with a 1/2inch impact to crush a sleeve. Rick is correct about the backlash.
I like the easy idea of "zapping with impact" and will gladly do it if that is all it takes. But i dont want to go under this thing again for a while. Thank you guys for info. What i read in the books is to set it to 8-10 inch pounds. but that is not a lot of torque so i am still a little confussed.
That torque spec IS NOT for the nut, it's for the rolling load on the pinion bearings.
It is checked with a torque wrench with the ring gear carrier out of the housing.
As for a crush sleeve: We use the shim style sleeve and set the load with a shim pack.
We use a nut that has had the lock machined off, so it can be used several times.
These:
Ratech Differential Pinion Bearing Spacers and Sleeves - Free Shipping on Orders Over $99 at Summit Racing
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If memory serves me correct it takes like 500ft pounds to crush a sleeve. Buzzard is correct about the inch pound spec as turning force.